2. Presentation On
Castor Crop
By: Adil Zia
Class No (618)
Semester 6th
Department Of Agronomy
The University Of Agriculture, Amir
Muhammad Khan Campus Mardan.
7. Agenda Of Presentation
History and origin
Taxonomic classification
Botanical description
Locality and soil
Cultural practices
Toxicity of castor
Uses of castor
8. History and origin
Castor seed and oil have been use in India,
Egypt and other countries since ancient
time.
Because of its widespread distribution it
has become a native plant in many region.
However , Weiss (1971) concludes that
castor is indigenous to eastern Africa ,
most probably Ethiopia.
10. Botanical description
Origin Ehtiopia
Botanical name ricinus communis l.
Family Euphorbiaceae
Locally Arind or Arindi
Seed oil 40-60%
Toxic constituent racin and ricinine
13. Locality and soil
Drought tolerant and heavy rain.
20-26c temperature and low humidity
Too height or low temperature are not
good
In pak mainly grown in sindh
In kpk not a commercial crop
ph range 5.0-6.5 up to 8
15. Cultural practices
Seedbed preparation
require deep ploughing because tap rooted
crop to break up hard subsoil
Good rain or heavy rainfall ploughed twice
or thrice and planked.
Sowing time
Irrigated area July is most suitable period for
sowing.
Rain fed area July and august
Punjab mid- July to mid-august
17. Manuring and fertilizer
Castor respond to fertilizer
Arnon (1972) recommended 25-50kg N, 5o-
70 p,40-50k
Seed rate and method of sowing
12-15 kg seed per hectare
Plant population 10,000-15,000 plants per
hectares be maintained
with dibbling and kera method R-R 75 cm
and P-P 25-30cm
Depth of seed more than 3.5 cm deep
18. Intercropping and rotation
Castor is grown mixed with kharif crops
Also grown as a border crop
Avoid planting of forage crop after castor
Irrigation
In dry areas , castor is totally grown on
stored moisture
In irrigated areas,4-6 irrigation are enough
until maturity.
20. Harvesting and storage
Castor produce spikes on sequential
branches at varying interval
Main spike can be harvested within90-100
days
The harvested spike are allowed tio dry in
the sun (6-8) days and then threshed ,
rubbing the capsule with a wooden planks.
Not attacked by insects
Oil content not reduced even after 3 year
of storage
22. Yield and cultivar
Yield as high as 2500-3000 kg/ha and
500-800 kg/ha on irrigated and dry lands.
A yield as high as 5000kg/ha under
irrigation has been reported (Arnon1972)
In Pakistan the national average yield
remain in the range of 700-800kg/ha
The average yield in Punjab is more than
1000kg/ha.
23. cultivars
“DS-30 main cultivar in sindh
“C-3” in punjab
“DS-30” developed from “C-30” was
released in 1983
This cultivar is grown both in the irrigated
and un irrigated areas
24. Insects pest and diseases
The main insect pest of castor are :
Semilooper
Hairy caterpillar
Capsule bore
Controlled by dimecron (1200EC)
Methyl parathion (50 EC)
None of disease attacking castor are
serious.
25. Toxicity
Castor seed contain 2.8-3% toxic
substances.
2-20 seed of castor kill
A man, 4 rabbit,5 sheeps,6 oxes,6 horses,7
pigs,11 dogs,80 ducks.
1mg kill human
cause abdominal pain, vomating,diarrhea
Large dose during pregnancy cause
abortion.
27. USES OF CASTOR
Castor oil is used for soap making.
Castor oil is used as hair oil, growth and
dandruff.
Lubricant activity.
Flower are useful in glandular tumor ,
anal trouble.
Biologically insecticidal activity e.g.,
biocide compound.
Mosquitoes, flies.ant killed at 24 hrs.
28. Contin….
Ingredient of soap, polishes and paints etc.
As fuel for precision engine.
As a fiber for making ropes from the stem.
Fresh leaves used by nursing mother in
canary island.
Leaves are useful in burn ( galactogogues)
Anti-cancer activity
ricin+monoclonal antibodies.