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Research Activities on
Watermelon in BRAC
Presented By:
Dr. S. C. Biswas & Dr. Ariful Islam
Introduction
 Watermelon is a globally important vine & juicy Cucurbitaceous crop and it is
grown widely in China, Japan, Thailand, Vietnam, Brazil, India, Algeria, Turkey,
Iran, Russia, Uzbekistan, Mexico, U.S.A and other Middle East countries besides
Bangladesh
 Fruits of watermelon are nutritionally rich and it contains different kinds of
important health promoting vitamins, minerals and anti oxidants (Rabbany et.al.,
2013).
 Basically it is a dry season crop and in Bangladesh it is grown in the late Rabi
season.
 Besides ‘Char land’ watermelon is also cultivated in the low-lying areas, lands
adjacent to hilly regions and also in the plain lands of Bangladesh.
 During the Bengali dry months of Chaitra & Baishakh (March –April) when
everybody feel uneasy due to hot sunny days and excessive dry weather condition
then this watermelon fruits give a big relief to the Bangladeshi people as the
watermelon fruits become available during that period. And its mesmerizing taste as
well as juicy red colored flesh quenches the thirst of its people by giving a huge
satisfaction as it contains 90% water in its flesh ( Sarker et.al., 2017).
 In Bangladesh, annually watermelons are cultivated in near about 25,740 hectares
of land and 6,00,514 metric tons of watermelons are produced with an average
production of 23.33 Mt/ha. Only in the 8 regions of Potuakhali district 13,718
hectares of watermelon is cultivated.
Contd…….
 Besides its tastier juicy flesh its rind is also consumed in the preparation of
culinary Bangla food items.
 In Bangladesh it is mainly cultivated in the districts of Patuakhali, Bhola,
Borguna, Noakhali, Pirojpur, Bagerhat, Sunamganj, Pabna, Natore,
Panchagarh, Gopalganj, Jhenaidah, Chuadanga, Feni, Satkhira etc.
 In Bangladesh different types of watermelon viz., plain whitish green rind
colour, blackish green rind colour, black, green stripe in light green
background rind, yellow rind with red inner flesh etc. are cultivated.
 Besides red colored flesh, watermelon having yellow flesh are also sold here
in Bangladesh
 Watermelon with different shapes and sizes including oblong, oval shaped,
oval round, round, elongated etc. are cultivated in Bangladesh
 Grafted watermelons (using bottle gourd or pumpkin root stock) produce
high quality watermelons and also gives higher yield.
 It is also cultivated on trellis in some areas of Bangladesh in the off season
 In the Southern part of Bangladesh it is hugely cultivated and it is one of
the major crop grown here and watermelons of this region have a high demand
in the market due to its high quality.
 Both hybrid and Open Pollinated (O.P) varieties are cultivated by the
growers but the demand of hybrid varieties is much higher than the O.P
varieties.
Watermelon Cultivation in Different Agro ecological Conditions of Bangladesh
In Char Areas, Golachipa
In adjacent lands of hilly areas, Sunamganj In low-lyeing areas (Beel), Santhia;
Pabna
Watermelon Cultivation on Trellis
Fig. Watermelon plants on trellis at
Nehalpur, Chuadanga.
Fig. Watermelons on trellis at
Nehalpur, Chuadanga.
Ranking of top 10 countries of
watermelon production
Position Country Average production
(Mt)
1st China 7,92,44,271
2nd Turkey 39,28,892
3rd Iran 38,13,850
4th Brazil 20,90,432
5th Uzbekistan 19,76,373
6th Algeria 18,77,069
7th U. S. A 18,23,160
8th Russia 17,57,972
9th Egypt 16,80,994
10th Mexico 11,99,648
BRAC Activities on Watermelon Research
• Since we have no better quality released high yielding
watermelon variety in Bangladesh our watermelon research
activity is totally variety screening oriented.
• Top quality exotic watermelon varieties are collected from the
agents of different reputed foreign companies and/or seed
samples are collected from annual APSA conference and are
given trial in major water melon growing areas to select suitable
watermelon variety/varieties before marketing.
• Seeds of selected best watermelon variety/varieties through
variety screening are thus imported and these exotic varieties are
sold to the growers through dealers.
• So far, 6 watermelon varieties (4 hybrid varieties & 1 OP variety)
have been released from BRAC for commercial cultivation.
• The name of the hybrid varieties are ‘Long Dragon’ ‘Super
Alexander’, ‘New Dragon’, ‘Black Bull’ & ‘Abe Dragon’ while the
name of the OP variety is ‘Feng bao’.
Watermelon Variety Screening (2009-10)
Four exotic watermelon varieties along with the
check variety were evaluated in Thakurgaon district
to identify suitable variety/varieties for marketing.
Seeds were sown on 14.01.10 in sandy loam soil
rich plot maintaining 2.5 m X 2.0 m spacing.
Standard production practices were followed so
that each variety can express their performances
accurately
Data on morphological as well as yield
contributing characters were collected and analyzed
critically at the end of the season.
Watermelon Variety Screening Report (2009-10)
Variety Sour-
ces
Days
to 1st
harves
-ting
Days to
final
harves-
ting
Fruit
wt./
fruit
(kg)
Yield/
acre
(Mt/
acre)
Other characteristics (
Fruit shape, rind colour, flesh
colour, eating quality,
juiciness, seed colour)
Variety
type
Long
Dragon
Green
Seed
Co.
133 158 4.51 10.31 Oblong, deep green stripe on
light green background, deep red,
sweet, moderate, grey.
Mid
season
Dragon
Giant
Do 134 152 3.46 6.72 Roundish oblong, deep green
stripe on light green background,
red, moderate sweet, medium,
grey.
Early
season
Fou-
nan
Do 133 157 3.33 7.17 Round, deep green stripe on light
green background, red , sweet,
medium, brown.
Mid
season
Feng
Bao
China 138 160 4.10 16.53
(47.33% higher
yield than
check)
Oval round, plain light green rind
with no stripe, deep red, Sweet,
juicy, brown seeded.
Mid
season
Glory
(Check
variety)
Sup-
reme
Seed
143 164 5.09 11.22 Oval round, deep green stripe on
light green background, light red,
less sweet, moderate, brown
Late
season
Location: Thakurgaon
Note: Through this trial, varieties ‘Feng Bao’ & ‘Long Dragon’ were recommended for
commercial cultivation due to their satisfactory yield and excellent fruit quality.
Seeding date:14.01.10
Fruits of ‘Feng bao’
Fruits of Long Dragon
Variety Screening Trial During the
Year 2012-13
Fifteen exotic watermelon varieties were selected
for conducting variety screening trial along with
four suitable check varieties in Santhia, Pabna.
Seeds were sown on 02.02.13 in farmers plot and
standard cultural practices were followed to raise a
good crop.
Harvesting of watermelons was started from 119
days.
All along 5 exotic varieties were found to be
promising.
 One yellow rind watermelon line was selected for
trellis cultivation.
Acce-ssion
no.
Season
Source
Seeding
date
Days
taken to
1st flowe-
ring
Days
taken to 1st
harves-
ting
Fruit
wt./
fruit
(kg)
Yield
(mT/
acre)
Fruit
shape
Fruit colour Remarks Taste-
ness
Final
Comments
WM 001
Rabi’12-13
to Kharif’13
Vietnam
02.02.13
83 114 2.50 11.82 Oblong Deep green rind with
dark green stripes
Poor
yield
Sweet Not
acceptable
WM 002 Vietnam 73 113 3.50 18.92 Round Light green rind with
dark green stripe
Poor
yield
More
sweet
Not
acceptable
WM 003 China 79 114 4.00 14.18 Round Green rind with dark
green stripe
Poor
yield
Sweet Not
acceptable
WM 004 China 81 109 5.50 16.72 Oblong Dark green rind with
blackish green stripe
Poor
yield
Sweet Not
acceptable
WM 005 China 78 114 3.50 14.27 Round Green rind with dark
green stripe
Poor
yield
Sweet Not
acceptable
WM 006 China 77 114 3.00 15.20 Round Light reen rind with
dark green stripe
Poor
yield
Sweet Not
acceptable
WM 007 China 80 114 3.25 13.70 Round Green rind with dark
green stripe
Poor
yield
Sweet Not
acceptable
WM 008 China 77 109 4.50 26.60 Round Dark green rind with
blackish green stripe
Better
yield
Sweet Retrial
WM 009 Thailand No germination
WM 010 Thailand 81 114 2.00 13.51 Oblong Golden yellow Poor
yield
More
sweet
Suitable for
trellis
cultivation.
WM 011 Thailand 80 114 2.25 10.26 Oblong Yellow rind with
green stripe
Poor
yield
More
sweet
Not
acceptable
WM 012 Thailand No germination
WM 013 China 73 114 7.00 49.55 Round Green rind with
dark green stripe
Highest
yield
Sweet Retrial
WM 014 China 77 114 6.50 38.42 Round Blackish green 2nd
highest
yield
Sweet Retrial
Performances of Different Watermelon Accessions in the Year 2012-13
WM
015
China 78 113 5.50 26.01 Oblong Light
green rind
with dark
green
stripe
Better
yield
Sweet Retrial
WM
016
Lal Teer 78 114 6.00 28.37 Oblong Light
green
Check
variety
Sweet -
WM
017
Seminis 73 115 5.00 17.70 Oblong Light
green
Check
variety
Sweet -
WM
018
Chia tai 72 114 4.75 29.68 Round Blackish
green
Check
variety
More
sweet
-
WM
019
BRAC 86 114 5.50 22.27 Oblong Light
green
Check
variety
Sweet -
Mean - - - 78.00 113.35 4.38 21.58 - - - - -
Range - - - (72-
86)
(109-
114)
(2.00-
7.00)
(10.26-
49.55)
- - - - -
Note: All along 15 exotic watermelon varieties were given trial in the farmer’s plot
at Santhia, Pabna against 4 check varieties & among them 5 varieties were selected
for retrial.
Watermelon Trial plots in Santhia, Pabna (2012-13)
WM 08
Farmer’s
variety
Trial Plot Trial Plot
Fruits of WM 01 & WM 02
W 01
W 02
Fruits of Accession WM 03 & 04
WM 03
WM 04
Fruits of Accession WM 06
WM 06
WM 06
Fruits of WM 10 & WM 11 (Yellow
rind)
Yellow rind watermelon
Watermelon fruits of normal rind
colour & yellow rind colour
WM 13
Performances of Different Watermelon Accessions (2017-18)
Acce-
ssion
code
Days
to
flowe
-ring
Days
to
harve-
sting
Fruit
shape
Fruit
length
(cm)
Rind
colour
Fruit
Wt.
(kg)
Flesh
colour
Yield/
Acre
(Mt)
Comments
WM
01/17
40 80 Oblong 28-30 Light
green
striped
5-6 Deep
red
18.50 Lower
yield,medium
size fruit.
WM
03/17
43 82 Oblong
large
30-32 Green
striped
8-9 Deep
red
20.50 Moderate
yield,
desirable fruit
size & wt.
promising.
WM
04/17
42 77 Oval
round
32-34 Blackish
green,
same as
Black
Bull
7-8 Deep
red
22.50 Moderate
yield, medium
size fruit.
Promising.
WM
08/17
45 78 Oblong 32-34 Green
striped
7-8 Deep
red
23.50 Moderate
yield, medium
size fruit
WM
09/17
45 79 Oblong 40-42 Green
striped
12-15 Deep
red
32.50 Higher yield,
green striped
fruit with
Contd………
Acce-
ssion
code
Days
to
flowe
-ring
Days
to
harve-
sting
Fruit
shape
Fruit
length
(cm)
Rind
colour
Fruit
Wt.
(kg)
Flesh
colour
Yield/
Acre
(Mt)
Comments
WM
10/17
42 78 Oval
round
28-30 Whitish
green
stripped
3-4 Deep
red
14.80 Lower yield,
farmers did not
like the variety.
WM
11/17
42 76 Oblong
large
38-40 Green
strip in
whitish
green
back-
ground
10-12 Dark red 30.50 Higher yield,
good fruiting
habit, bigger
fruits. Framers
have accepted
this variety,
WM
12/17
46 80 Oval
round
28-30 Black 3-4 Deep
red
14.50 Poor yield,
smaller fruits.
Farmers did not
like the variety.
farmers
WM
13/17
40 77 Oval
round
28-30 Deep
green
stripe on
green
back-
ground
4-5 Deep
red
16.00 Lower yield,
medium size
fruits;Promising
Contd…….
Acce-
ssion
code
Days
to
flowe
-ring
Days
to
harve-
sting
Fruit
shape
Fruit
length
(cm)
Rind
colour
Fruit
Wt.
(kg)
Flesh
colour
Yield/
Acre
(Mt)
Comments
WM
14/17
40 77 Oblong 28-30 Black 5-6 Deep
red
19.20 Fruits are but
more sweet,
promising.
WM
15/17
42 79 Oblong 32-34 Black 6-7 Deep
red
21.00 Moderate
yield, medium
size fruit, good
taste.
WM
16/17
45 78 Oblong 32-34 Green
stripped
6-8 Deep
red
16.00 Lower yield,
medium size
fruit.
WM
17/17
46 81 Oblong
medium
26-27 Green
stripped
3-4 Light
red
13.00 Yield is very
low, smaller
size fruits
HBV
01/18
46 79 Oblong
medium
28-30 Green
stripped
5-6 Deep
red
19.40 Moderate
yield, medium
size fruit.
Cntd……
Acce-
ssion
code
Days
to
flowe
-ring
Days
to
harve-
sting
Fruit
shape
Fruit
length
(cm)
Rind
colour
Fruit
wt.
(kg)
Flesh
colour
Yield/
Acre
(Mt)
Comments
HBV
02/18
48 81 Oval
round
28-30 Green
striped
5-6 Deep
red
18.50 Moderate
yield, medium
size fruit
Black
Bull
(Check
variety)
41 91 Oblong
large
35-38 Deep
green
9-10 Deep
red
27-28 Better yield,
bigger fruits,
excellent flesh
colour
Note: Plants of code WM 02/17, 05/17, 06/17, 07/17 have been damaged due to unusual rain.
Promising Line WM 11/17
WM 11/17
Fruits of WM 04/17
14/17WM 04/17
WM 04/17
WM 14/17WM 04/17
Fruits of WM 13/17 & 14/17
WM 13/17
WM 14/17WM 14/17
Black Bull (Check Variety)
Exotic Variety Trial at Amkhola,
Golachipa During the Year 2018-19
A trial of total 10 exotic watermelon varieties
was conducted at Amkhola, Golachipa.
 Broadly two categories of watermelons were
isolated, a) Normal red flesh & b) Yellow flesh
Among the red flesh type; smaller ‘Ice Box’
type (3 - 3.5 kg) & medium size (7- 8kg)
watermelons were noticed.
‘Ice Box’ type had blackish rind colour while
most of the the medium size watermelons had
green sripe on whitish green background rind.
An uncommon variety having yellow
coloured flesh with nice taste was recovered as
a promising line.
Sl.
no
Rind
colour
Code no. Characteristic features
01
Black
WM 85/18 Moderate growth & development, mid season type variety, medium to small
oval shaped fruits. Fruit wt. 2.0-3.0 kg per fruit. Attractive red colored flesh,
juicy & crispy, sweet taste. Not promising as farmers did not like it.
02 WM 86/18 Very much similar to WM 85/18. Moderate growth & development; mid season
type variety, medium to small size round shaped fruits. Fruit wt. per fruits 2.5-
3.0 kg. Attractive red colored flesh, juicy & crispy, sweet taste. Not promising
as farmers did not like it.
03 WM 90/18 Similar to WM 86/18. Moderate growth & development; mid season type
variety, medium to small size oval round shaped fruits. Fruit wt. per fruits 3.0-
3.5 kg. Attractive red colored flesh, juicy & crispy. Not promising.
04 WM 91/18 Similar to WM 90/18. Moderate growth & development; mid season type
variety, medium to small size round shaped fruits. Fruit wt. per fruits 3.0-3.5
kg. Attractive red colored flesh, juicy & crispy, sweet taste. Not promising as
farmers did not like it.
05 WM 92/18 Slightly better growth and development than other black rind coloured watermelon. Prolific
fruit bearing. Mid season type variety, medium to small size oval round shaped fruits. Fruit
wt. per fruits 4.0-4.5 kg. Attractive red colored flesh, juicy & crispy, sweet taste. Suitable
for trellis cultivation. Promising variety for growing them on trellis.
06 WM
100/18
Excellent vigour, huge spreading and stronger vines; moderate fruit bearing habit, big size
fruits having 10-12 kg and big size fruits are more frequent. Also suitable for trellis
cultivation. Promising variety as farmers liked the variety.
Major characteristic features of different types of watermelons at Amkhola, Golachipa ( 2018-19)
07
Deep green
stripe on
whitish
green back-
ground
WM
93/18
Better crop condition than those of blackish rind coloured type. Plants
exhibited more vigour; vines are more healthier and leaves are relatively
bigger and more green coloured than blackish rind type. Moderate fruit
bearing. Elongated oval type relatively bigger size fruits but no. of desirable
size fruits is relatively low. Fruit wt. per fruit: 7-8kg. Expecting better yield.
No major disease attacks. Farmer liked the variety. Suitable for trellis
cultivation.
08 WM
94/18
Slightly better crop condition than that of WM 93/18. Vines are stronger and leaves are
deep green coloured. Moderate fruit bearing. Elongated oval type relatively big size
fruits. Fruit girth is greaterr than WM 93/18.Tags were given to 3 fruits from this
variety. Fruit wt. per fruit: 8-10 kg. Expecting better yield. No major disease attacks.
Promising variety. Farmers liked this variety.
09 WM
95/18
Among the stripped type water melons this is the best variety. Very good crop growth &
development. Plants had excellent vigour, stronger spreading vines; elongated oval
round type fruits with more prominent stripes. Bigger type of fruits was more frequent
and had maximum no. of big size fruits among the 3 varieties belong to the group.
Fruits were healthy and fruit wt. is around 10-11 Kg . Tags were given to 9 fruits under
this variety. Farmer’s 1st choice variety among the supplied varieties. Promising variety.
10 Deep
blackish
green stripe
in deep green
background (
Yelllow flesh)
WM
96/18
Uncommon early season type variety. Moderate crop growth &
development, moderate spreading, almost roundish oval type fruit, fruit
wt. around 6-7 kg. Attractive orange yellow colored flesh with brownish
yellow seed. Crispy flesh and also juicy. Relatively less seed in the flesh
and very sweet taste (Brix value is around 12-13) and suitable for trellis
cultivation. Promising variety, farmers also liked this variety.
Contd.
Watermelon Trial Plot at Amkhola, Golachipa
During the year 2018-19
Watermelon Trial plot at Amkhola Accession WM 93/18
Fruits of WM 94/18 & 100/18
WM 94/18 WM 100/18
Yellow Flesh Watermelon
An uncommon early season type Yellow Flesh Watermelon variety (harvesting 7-8
days ahead than other varieties) evaluated in a farmer’s plot at Amkhola Char,
Golachipa , Potuakhali, Bangladesh with other 9 different type of watermelon
varieties as a part of BRAC on farm evaluation of watermelon program. Its
performance was found to be satisfactory compared to other varieties. Major
characteristic features of this variety are:
1. Normal type crop growth & development, moderate spreading habit.
2.Almost roundish oval type fruit, fruit wt. around 6-7 kg.
3.Attractive orange yellow colored flesh with brownish yellow seed.
4.Crispy compact juicy flesh and complete absence of hollowness in the fruit.
5. Relatively less seed in the unique type flesh and very sweet taste (TSS = 12-
130Brix).
6. Yield 50-60Mt/ha.
Yellow flesh watermelon
Yellow flesh watermelon
Fig. Yellow flesh watermelon
(Code 96/18 )
Fig. The grower himself is eating yellow
flesh watermelon
Cultivation of BRAC Watermelon
Variety ‘Black bull’ in the Off season
Since in Bangladesh watermelon fruits are
now available throughout the year therefore, seeds
of widely adapted variety of BRAC watermelon
‘Black bull were sown in Ishwardi, Pabna, in the
last week of March (Sowing date: 21.03.19) and its
fruits were harvested in middle of June (harvesting
date; 15.06.19). Nice fruiting was observed and
good quality watermelons were harvested and sold
in the market at higher price as the supply of
watermelons in this period was very few.
‘Black Bull’ in the off season at Ishwardi
Performance of Promising Watermelon
Line ‘Tiger’ in 2 successive years
During the year 2017-18 season through
variety screening trial in Ulania, Golachipa
among the 20 exotic varieties; variety ‘Tiger’
(code WM 11/17) was found to be promising and
in the next year i.e. in 2018-19 same variety was
given trial in Rangabali of same upazilla and
same unique varietal characteristics having early
flowering and good quality larger fruit was
recorded.
Fruit shape & size comparison of
Tiger ( same variety with different
code) between 2017-18 & 2018-19
Left hand side ( 2017-18) (Matured fruit) Right hand side (2018-19) (Immature
fruit)
Yield data of WM 11/17 (season: 2017-18)
Days
to
flower
ing
Days
to 1st
harv-
esting
Days
to
final
harv-
esting
Fruit
leng-
th
(cm)
Fruit
shape
Fruit
wt.
(kg)
Fruit
colour
Flesh
colour
Fruit
uni-
for-
mity
(%)
Yield
(Mt/
acre)
Farm-
ers
com-
ment
42.00 76.00 85.00 38-40 Oblong
large
9-10 Green
stripes
on
whitish
green
back-
ground
Deep
red
95 30.50 This
variety
is very
good
and can
be
marke-
ted as
the
farmers
have
accep-
ted this
variety
Extra early season watermelon
cultivation in Sunamganj District
Watermelons are widely cultivated in Bangladesh in the
late Rabi season. Here normally its seeds are sown in the month
of December-January and its fruits are harvested during the
month of April-May. But the practice of watermelon cultivation in
the Tahirpur upazilla of Sunamganj district is quite different.
Here the season starts during the month of September - October
and the watermelons are harvested during the month of
February. By selling the extra early season watermelon in the
market, the growers earn 2-3 times more profit than the normal
season. Therefore, BRAC watermelon variety 'Abe Dragon' has
been cultivated in the extra early season this year (2019) at
Tahirpur Upazilla, Sunamganj and its performance has been
found to be promising. This trial also proved that 'Abe Dragon'
watermelon variety is equally productive both in the normal
season & also in the extra early season.
Watermelon plot at Soydabad,
Tahirpur, Sunamganj
Excellent Fruiting of ‘Abe Dragon’ in the Extra early
season watermelon cultivation in Sunamganj District
Lessons learnt
• Watermelon is very sensitive to soil characteristics & climatic conditions and
thus watermelon is cultivated in some specific areas of Bangladesh
• In Bangladesh it is cultivated in a wide variety of soil conditions viz., in the
char areas (Golachipa, Potuakhali & Char fashion, Bhola etc.) in the lands
adjacent to the mountains (Tahirpur, Sunamganj) and in the low land areas
(Gurudashpur, Natore and Santhia, Pabna etc.).
• In the Natore region watermelon is cultivated as a ‘Relay Crop’ with garlic.
• Framers prefer variety having smaller seeds to larger seeds as no. of seeds
per 100gm seed in smaller variety is much higher than the large seeded
variety (instead of 1800; 2200 seeds are obtained from small seeded variety).
• Variety having big size watermelon having stripped rind has higher demand
among the growers.
• Demand of watermelon also varies from location to location depending on
rind colour
• Watermelon can be cultivated almost throughout the year in Bangladeshi
agro-climatic conditions
• Besides domestic demand it has enough scope to export watermelon in the
upstream market
• More climate resilient & stress tolerant watermelon varieties are required to
increase the production of watermelon.
• Training on watermelon cultivation to the farmers will boost up watermelon
production.
• Grafting technique in raising good watermelon seedling will also enhance
yield and quality of watermelon.

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Watermelon Research in BRAC

  • 1. Research Activities on Watermelon in BRAC Presented By: Dr. S. C. Biswas & Dr. Ariful Islam
  • 2. Introduction  Watermelon is a globally important vine & juicy Cucurbitaceous crop and it is grown widely in China, Japan, Thailand, Vietnam, Brazil, India, Algeria, Turkey, Iran, Russia, Uzbekistan, Mexico, U.S.A and other Middle East countries besides Bangladesh  Fruits of watermelon are nutritionally rich and it contains different kinds of important health promoting vitamins, minerals and anti oxidants (Rabbany et.al., 2013).  Basically it is a dry season crop and in Bangladesh it is grown in the late Rabi season.  Besides ‘Char land’ watermelon is also cultivated in the low-lying areas, lands adjacent to hilly regions and also in the plain lands of Bangladesh.  During the Bengali dry months of Chaitra & Baishakh (March –April) when everybody feel uneasy due to hot sunny days and excessive dry weather condition then this watermelon fruits give a big relief to the Bangladeshi people as the watermelon fruits become available during that period. And its mesmerizing taste as well as juicy red colored flesh quenches the thirst of its people by giving a huge satisfaction as it contains 90% water in its flesh ( Sarker et.al., 2017).  In Bangladesh, annually watermelons are cultivated in near about 25,740 hectares of land and 6,00,514 metric tons of watermelons are produced with an average production of 23.33 Mt/ha. Only in the 8 regions of Potuakhali district 13,718 hectares of watermelon is cultivated.
  • 3. Contd…….  Besides its tastier juicy flesh its rind is also consumed in the preparation of culinary Bangla food items.  In Bangladesh it is mainly cultivated in the districts of Patuakhali, Bhola, Borguna, Noakhali, Pirojpur, Bagerhat, Sunamganj, Pabna, Natore, Panchagarh, Gopalganj, Jhenaidah, Chuadanga, Feni, Satkhira etc.  In Bangladesh different types of watermelon viz., plain whitish green rind colour, blackish green rind colour, black, green stripe in light green background rind, yellow rind with red inner flesh etc. are cultivated.  Besides red colored flesh, watermelon having yellow flesh are also sold here in Bangladesh  Watermelon with different shapes and sizes including oblong, oval shaped, oval round, round, elongated etc. are cultivated in Bangladesh  Grafted watermelons (using bottle gourd or pumpkin root stock) produce high quality watermelons and also gives higher yield.  It is also cultivated on trellis in some areas of Bangladesh in the off season  In the Southern part of Bangladesh it is hugely cultivated and it is one of the major crop grown here and watermelons of this region have a high demand in the market due to its high quality.  Both hybrid and Open Pollinated (O.P) varieties are cultivated by the growers but the demand of hybrid varieties is much higher than the O.P varieties.
  • 4. Watermelon Cultivation in Different Agro ecological Conditions of Bangladesh In Char Areas, Golachipa In adjacent lands of hilly areas, Sunamganj In low-lyeing areas (Beel), Santhia; Pabna
  • 5. Watermelon Cultivation on Trellis Fig. Watermelon plants on trellis at Nehalpur, Chuadanga. Fig. Watermelons on trellis at Nehalpur, Chuadanga.
  • 6. Ranking of top 10 countries of watermelon production Position Country Average production (Mt) 1st China 7,92,44,271 2nd Turkey 39,28,892 3rd Iran 38,13,850 4th Brazil 20,90,432 5th Uzbekistan 19,76,373 6th Algeria 18,77,069 7th U. S. A 18,23,160 8th Russia 17,57,972 9th Egypt 16,80,994 10th Mexico 11,99,648
  • 7. BRAC Activities on Watermelon Research • Since we have no better quality released high yielding watermelon variety in Bangladesh our watermelon research activity is totally variety screening oriented. • Top quality exotic watermelon varieties are collected from the agents of different reputed foreign companies and/or seed samples are collected from annual APSA conference and are given trial in major water melon growing areas to select suitable watermelon variety/varieties before marketing. • Seeds of selected best watermelon variety/varieties through variety screening are thus imported and these exotic varieties are sold to the growers through dealers. • So far, 6 watermelon varieties (4 hybrid varieties & 1 OP variety) have been released from BRAC for commercial cultivation. • The name of the hybrid varieties are ‘Long Dragon’ ‘Super Alexander’, ‘New Dragon’, ‘Black Bull’ & ‘Abe Dragon’ while the name of the OP variety is ‘Feng bao’.
  • 8. Watermelon Variety Screening (2009-10) Four exotic watermelon varieties along with the check variety were evaluated in Thakurgaon district to identify suitable variety/varieties for marketing. Seeds were sown on 14.01.10 in sandy loam soil rich plot maintaining 2.5 m X 2.0 m spacing. Standard production practices were followed so that each variety can express their performances accurately Data on morphological as well as yield contributing characters were collected and analyzed critically at the end of the season.
  • 9. Watermelon Variety Screening Report (2009-10) Variety Sour- ces Days to 1st harves -ting Days to final harves- ting Fruit wt./ fruit (kg) Yield/ acre (Mt/ acre) Other characteristics ( Fruit shape, rind colour, flesh colour, eating quality, juiciness, seed colour) Variety type Long Dragon Green Seed Co. 133 158 4.51 10.31 Oblong, deep green stripe on light green background, deep red, sweet, moderate, grey. Mid season Dragon Giant Do 134 152 3.46 6.72 Roundish oblong, deep green stripe on light green background, red, moderate sweet, medium, grey. Early season Fou- nan Do 133 157 3.33 7.17 Round, deep green stripe on light green background, red , sweet, medium, brown. Mid season Feng Bao China 138 160 4.10 16.53 (47.33% higher yield than check) Oval round, plain light green rind with no stripe, deep red, Sweet, juicy, brown seeded. Mid season Glory (Check variety) Sup- reme Seed 143 164 5.09 11.22 Oval round, deep green stripe on light green background, light red, less sweet, moderate, brown Late season Location: Thakurgaon Note: Through this trial, varieties ‘Feng Bao’ & ‘Long Dragon’ were recommended for commercial cultivation due to their satisfactory yield and excellent fruit quality. Seeding date:14.01.10
  • 11. Fruits of Long Dragon
  • 12. Variety Screening Trial During the Year 2012-13 Fifteen exotic watermelon varieties were selected for conducting variety screening trial along with four suitable check varieties in Santhia, Pabna. Seeds were sown on 02.02.13 in farmers plot and standard cultural practices were followed to raise a good crop. Harvesting of watermelons was started from 119 days. All along 5 exotic varieties were found to be promising.  One yellow rind watermelon line was selected for trellis cultivation.
  • 13. Acce-ssion no. Season Source Seeding date Days taken to 1st flowe- ring Days taken to 1st harves- ting Fruit wt./ fruit (kg) Yield (mT/ acre) Fruit shape Fruit colour Remarks Taste- ness Final Comments WM 001 Rabi’12-13 to Kharif’13 Vietnam 02.02.13 83 114 2.50 11.82 Oblong Deep green rind with dark green stripes Poor yield Sweet Not acceptable WM 002 Vietnam 73 113 3.50 18.92 Round Light green rind with dark green stripe Poor yield More sweet Not acceptable WM 003 China 79 114 4.00 14.18 Round Green rind with dark green stripe Poor yield Sweet Not acceptable WM 004 China 81 109 5.50 16.72 Oblong Dark green rind with blackish green stripe Poor yield Sweet Not acceptable WM 005 China 78 114 3.50 14.27 Round Green rind with dark green stripe Poor yield Sweet Not acceptable WM 006 China 77 114 3.00 15.20 Round Light reen rind with dark green stripe Poor yield Sweet Not acceptable WM 007 China 80 114 3.25 13.70 Round Green rind with dark green stripe Poor yield Sweet Not acceptable WM 008 China 77 109 4.50 26.60 Round Dark green rind with blackish green stripe Better yield Sweet Retrial WM 009 Thailand No germination WM 010 Thailand 81 114 2.00 13.51 Oblong Golden yellow Poor yield More sweet Suitable for trellis cultivation. WM 011 Thailand 80 114 2.25 10.26 Oblong Yellow rind with green stripe Poor yield More sweet Not acceptable WM 012 Thailand No germination WM 013 China 73 114 7.00 49.55 Round Green rind with dark green stripe Highest yield Sweet Retrial WM 014 China 77 114 6.50 38.42 Round Blackish green 2nd highest yield Sweet Retrial Performances of Different Watermelon Accessions in the Year 2012-13
  • 14. WM 015 China 78 113 5.50 26.01 Oblong Light green rind with dark green stripe Better yield Sweet Retrial WM 016 Lal Teer 78 114 6.00 28.37 Oblong Light green Check variety Sweet - WM 017 Seminis 73 115 5.00 17.70 Oblong Light green Check variety Sweet - WM 018 Chia tai 72 114 4.75 29.68 Round Blackish green Check variety More sweet - WM 019 BRAC 86 114 5.50 22.27 Oblong Light green Check variety Sweet - Mean - - - 78.00 113.35 4.38 21.58 - - - - - Range - - - (72- 86) (109- 114) (2.00- 7.00) (10.26- 49.55) - - - - - Note: All along 15 exotic watermelon varieties were given trial in the farmer’s plot at Santhia, Pabna against 4 check varieties & among them 5 varieties were selected for retrial.
  • 15. Watermelon Trial plots in Santhia, Pabna (2012-13) WM 08 Farmer’s variety Trial Plot Trial Plot
  • 16. Fruits of WM 01 & WM 02 W 01 W 02
  • 17. Fruits of Accession WM 03 & 04 WM 03 WM 04
  • 18. Fruits of Accession WM 06 WM 06 WM 06
  • 19. Fruits of WM 10 & WM 11 (Yellow rind)
  • 21. Watermelon fruits of normal rind colour & yellow rind colour WM 13
  • 22. Performances of Different Watermelon Accessions (2017-18) Acce- ssion code Days to flowe -ring Days to harve- sting Fruit shape Fruit length (cm) Rind colour Fruit Wt. (kg) Flesh colour Yield/ Acre (Mt) Comments WM 01/17 40 80 Oblong 28-30 Light green striped 5-6 Deep red 18.50 Lower yield,medium size fruit. WM 03/17 43 82 Oblong large 30-32 Green striped 8-9 Deep red 20.50 Moderate yield, desirable fruit size & wt. promising. WM 04/17 42 77 Oval round 32-34 Blackish green, same as Black Bull 7-8 Deep red 22.50 Moderate yield, medium size fruit. Promising. WM 08/17 45 78 Oblong 32-34 Green striped 7-8 Deep red 23.50 Moderate yield, medium size fruit WM 09/17 45 79 Oblong 40-42 Green striped 12-15 Deep red 32.50 Higher yield, green striped fruit with
  • 23. Contd……… Acce- ssion code Days to flowe -ring Days to harve- sting Fruit shape Fruit length (cm) Rind colour Fruit Wt. (kg) Flesh colour Yield/ Acre (Mt) Comments WM 10/17 42 78 Oval round 28-30 Whitish green stripped 3-4 Deep red 14.80 Lower yield, farmers did not like the variety. WM 11/17 42 76 Oblong large 38-40 Green strip in whitish green back- ground 10-12 Dark red 30.50 Higher yield, good fruiting habit, bigger fruits. Framers have accepted this variety, WM 12/17 46 80 Oval round 28-30 Black 3-4 Deep red 14.50 Poor yield, smaller fruits. Farmers did not like the variety. farmers WM 13/17 40 77 Oval round 28-30 Deep green stripe on green back- ground 4-5 Deep red 16.00 Lower yield, medium size fruits;Promising
  • 24. Contd……. Acce- ssion code Days to flowe -ring Days to harve- sting Fruit shape Fruit length (cm) Rind colour Fruit Wt. (kg) Flesh colour Yield/ Acre (Mt) Comments WM 14/17 40 77 Oblong 28-30 Black 5-6 Deep red 19.20 Fruits are but more sweet, promising. WM 15/17 42 79 Oblong 32-34 Black 6-7 Deep red 21.00 Moderate yield, medium size fruit, good taste. WM 16/17 45 78 Oblong 32-34 Green stripped 6-8 Deep red 16.00 Lower yield, medium size fruit. WM 17/17 46 81 Oblong medium 26-27 Green stripped 3-4 Light red 13.00 Yield is very low, smaller size fruits HBV 01/18 46 79 Oblong medium 28-30 Green stripped 5-6 Deep red 19.40 Moderate yield, medium size fruit.
  • 25. Cntd…… Acce- ssion code Days to flowe -ring Days to harve- sting Fruit shape Fruit length (cm) Rind colour Fruit wt. (kg) Flesh colour Yield/ Acre (Mt) Comments HBV 02/18 48 81 Oval round 28-30 Green striped 5-6 Deep red 18.50 Moderate yield, medium size fruit Black Bull (Check variety) 41 91 Oblong large 35-38 Deep green 9-10 Deep red 27-28 Better yield, bigger fruits, excellent flesh colour Note: Plants of code WM 02/17, 05/17, 06/17, 07/17 have been damaged due to unusual rain.
  • 26. Promising Line WM 11/17 WM 11/17
  • 27. Fruits of WM 04/17 14/17WM 04/17 WM 04/17 WM 14/17WM 04/17
  • 28. Fruits of WM 13/17 & 14/17 WM 13/17 WM 14/17WM 14/17
  • 29. Black Bull (Check Variety)
  • 30. Exotic Variety Trial at Amkhola, Golachipa During the Year 2018-19 A trial of total 10 exotic watermelon varieties was conducted at Amkhola, Golachipa.  Broadly two categories of watermelons were isolated, a) Normal red flesh & b) Yellow flesh Among the red flesh type; smaller ‘Ice Box’ type (3 - 3.5 kg) & medium size (7- 8kg) watermelons were noticed. ‘Ice Box’ type had blackish rind colour while most of the the medium size watermelons had green sripe on whitish green background rind. An uncommon variety having yellow coloured flesh with nice taste was recovered as a promising line.
  • 31. Sl. no Rind colour Code no. Characteristic features 01 Black WM 85/18 Moderate growth & development, mid season type variety, medium to small oval shaped fruits. Fruit wt. 2.0-3.0 kg per fruit. Attractive red colored flesh, juicy & crispy, sweet taste. Not promising as farmers did not like it. 02 WM 86/18 Very much similar to WM 85/18. Moderate growth & development; mid season type variety, medium to small size round shaped fruits. Fruit wt. per fruits 2.5- 3.0 kg. Attractive red colored flesh, juicy & crispy, sweet taste. Not promising as farmers did not like it. 03 WM 90/18 Similar to WM 86/18. Moderate growth & development; mid season type variety, medium to small size oval round shaped fruits. Fruit wt. per fruits 3.0- 3.5 kg. Attractive red colored flesh, juicy & crispy. Not promising. 04 WM 91/18 Similar to WM 90/18. Moderate growth & development; mid season type variety, medium to small size round shaped fruits. Fruit wt. per fruits 3.0-3.5 kg. Attractive red colored flesh, juicy & crispy, sweet taste. Not promising as farmers did not like it. 05 WM 92/18 Slightly better growth and development than other black rind coloured watermelon. Prolific fruit bearing. Mid season type variety, medium to small size oval round shaped fruits. Fruit wt. per fruits 4.0-4.5 kg. Attractive red colored flesh, juicy & crispy, sweet taste. Suitable for trellis cultivation. Promising variety for growing them on trellis. 06 WM 100/18 Excellent vigour, huge spreading and stronger vines; moderate fruit bearing habit, big size fruits having 10-12 kg and big size fruits are more frequent. Also suitable for trellis cultivation. Promising variety as farmers liked the variety. Major characteristic features of different types of watermelons at Amkhola, Golachipa ( 2018-19)
  • 32. 07 Deep green stripe on whitish green back- ground WM 93/18 Better crop condition than those of blackish rind coloured type. Plants exhibited more vigour; vines are more healthier and leaves are relatively bigger and more green coloured than blackish rind type. Moderate fruit bearing. Elongated oval type relatively bigger size fruits but no. of desirable size fruits is relatively low. Fruit wt. per fruit: 7-8kg. Expecting better yield. No major disease attacks. Farmer liked the variety. Suitable for trellis cultivation. 08 WM 94/18 Slightly better crop condition than that of WM 93/18. Vines are stronger and leaves are deep green coloured. Moderate fruit bearing. Elongated oval type relatively big size fruits. Fruit girth is greaterr than WM 93/18.Tags were given to 3 fruits from this variety. Fruit wt. per fruit: 8-10 kg. Expecting better yield. No major disease attacks. Promising variety. Farmers liked this variety. 09 WM 95/18 Among the stripped type water melons this is the best variety. Very good crop growth & development. Plants had excellent vigour, stronger spreading vines; elongated oval round type fruits with more prominent stripes. Bigger type of fruits was more frequent and had maximum no. of big size fruits among the 3 varieties belong to the group. Fruits were healthy and fruit wt. is around 10-11 Kg . Tags were given to 9 fruits under this variety. Farmer’s 1st choice variety among the supplied varieties. Promising variety. 10 Deep blackish green stripe in deep green background ( Yelllow flesh) WM 96/18 Uncommon early season type variety. Moderate crop growth & development, moderate spreading, almost roundish oval type fruit, fruit wt. around 6-7 kg. Attractive orange yellow colored flesh with brownish yellow seed. Crispy flesh and also juicy. Relatively less seed in the flesh and very sweet taste (Brix value is around 12-13) and suitable for trellis cultivation. Promising variety, farmers also liked this variety. Contd.
  • 33. Watermelon Trial Plot at Amkhola, Golachipa During the year 2018-19 Watermelon Trial plot at Amkhola Accession WM 93/18
  • 34. Fruits of WM 94/18 & 100/18 WM 94/18 WM 100/18
  • 35. Yellow Flesh Watermelon An uncommon early season type Yellow Flesh Watermelon variety (harvesting 7-8 days ahead than other varieties) evaluated in a farmer’s plot at Amkhola Char, Golachipa , Potuakhali, Bangladesh with other 9 different type of watermelon varieties as a part of BRAC on farm evaluation of watermelon program. Its performance was found to be satisfactory compared to other varieties. Major characteristic features of this variety are: 1. Normal type crop growth & development, moderate spreading habit. 2.Almost roundish oval type fruit, fruit wt. around 6-7 kg. 3.Attractive orange yellow colored flesh with brownish yellow seed. 4.Crispy compact juicy flesh and complete absence of hollowness in the fruit. 5. Relatively less seed in the unique type flesh and very sweet taste (TSS = 12- 130Brix). 6. Yield 50-60Mt/ha.
  • 37. Yellow flesh watermelon Fig. Yellow flesh watermelon (Code 96/18 ) Fig. The grower himself is eating yellow flesh watermelon
  • 38. Cultivation of BRAC Watermelon Variety ‘Black bull’ in the Off season Since in Bangladesh watermelon fruits are now available throughout the year therefore, seeds of widely adapted variety of BRAC watermelon ‘Black bull were sown in Ishwardi, Pabna, in the last week of March (Sowing date: 21.03.19) and its fruits were harvested in middle of June (harvesting date; 15.06.19). Nice fruiting was observed and good quality watermelons were harvested and sold in the market at higher price as the supply of watermelons in this period was very few.
  • 39. ‘Black Bull’ in the off season at Ishwardi
  • 40. Performance of Promising Watermelon Line ‘Tiger’ in 2 successive years During the year 2017-18 season through variety screening trial in Ulania, Golachipa among the 20 exotic varieties; variety ‘Tiger’ (code WM 11/17) was found to be promising and in the next year i.e. in 2018-19 same variety was given trial in Rangabali of same upazilla and same unique varietal characteristics having early flowering and good quality larger fruit was recorded.
  • 41. Fruit shape & size comparison of Tiger ( same variety with different code) between 2017-18 & 2018-19 Left hand side ( 2017-18) (Matured fruit) Right hand side (2018-19) (Immature fruit)
  • 42. Yield data of WM 11/17 (season: 2017-18) Days to flower ing Days to 1st harv- esting Days to final harv- esting Fruit leng- th (cm) Fruit shape Fruit wt. (kg) Fruit colour Flesh colour Fruit uni- for- mity (%) Yield (Mt/ acre) Farm- ers com- ment 42.00 76.00 85.00 38-40 Oblong large 9-10 Green stripes on whitish green back- ground Deep red 95 30.50 This variety is very good and can be marke- ted as the farmers have accep- ted this variety
  • 43. Extra early season watermelon cultivation in Sunamganj District Watermelons are widely cultivated in Bangladesh in the late Rabi season. Here normally its seeds are sown in the month of December-January and its fruits are harvested during the month of April-May. But the practice of watermelon cultivation in the Tahirpur upazilla of Sunamganj district is quite different. Here the season starts during the month of September - October and the watermelons are harvested during the month of February. By selling the extra early season watermelon in the market, the growers earn 2-3 times more profit than the normal season. Therefore, BRAC watermelon variety 'Abe Dragon' has been cultivated in the extra early season this year (2019) at Tahirpur Upazilla, Sunamganj and its performance has been found to be promising. This trial also proved that 'Abe Dragon' watermelon variety is equally productive both in the normal season & also in the extra early season.
  • 44. Watermelon plot at Soydabad, Tahirpur, Sunamganj
  • 45. Excellent Fruiting of ‘Abe Dragon’ in the Extra early season watermelon cultivation in Sunamganj District
  • 46. Lessons learnt • Watermelon is very sensitive to soil characteristics & climatic conditions and thus watermelon is cultivated in some specific areas of Bangladesh • In Bangladesh it is cultivated in a wide variety of soil conditions viz., in the char areas (Golachipa, Potuakhali & Char fashion, Bhola etc.) in the lands adjacent to the mountains (Tahirpur, Sunamganj) and in the low land areas (Gurudashpur, Natore and Santhia, Pabna etc.). • In the Natore region watermelon is cultivated as a ‘Relay Crop’ with garlic. • Framers prefer variety having smaller seeds to larger seeds as no. of seeds per 100gm seed in smaller variety is much higher than the large seeded variety (instead of 1800; 2200 seeds are obtained from small seeded variety). • Variety having big size watermelon having stripped rind has higher demand among the growers. • Demand of watermelon also varies from location to location depending on rind colour • Watermelon can be cultivated almost throughout the year in Bangladeshi agro-climatic conditions • Besides domestic demand it has enough scope to export watermelon in the upstream market • More climate resilient & stress tolerant watermelon varieties are required to increase the production of watermelon. • Training on watermelon cultivation to the farmers will boost up watermelon production. • Grafting technique in raising good watermelon seedling will also enhance yield and quality of watermelon.