This document discusses key aspects of crop production and management. It begins by explaining the origins of agriculture and defines key terms. It then outlines the main agricultural practices farmers follow for good crop yields, including soil preparation, selection and sowing of seeds, manuring/fertilizing, and irrigation. The document also discusses crop seasons in India and different methods for sowing seeds. It explains the differences between manure and fertilizers and natural methods to maintain soil fertility like field fallow, mixed cropping, and crop rotation.
This presentation talks in brief about the psychological concept motivation, its type and technique to motivate people particularly villagers for adopting new methods/technology of farming.
agriculture science practical crop production pulses and its significance to ...BABLUHRANGKHAWL
pracatical crop production
Significance of pulse to indian national economy and also its significant role to human nutririon like protein content and also its contribution to growing GDP
FARM POWER IN INDIA –
Farm Power is an essential input in agriculture for timely field operations for increasing production and productivity of land.
Farm power is used for operating different types of machinery like tillage, planting, plant protection, harvesting and threshing machinery.
This presentation talks in brief about the psychological concept motivation, its type and technique to motivate people particularly villagers for adopting new methods/technology of farming.
agriculture science practical crop production pulses and its significance to ...BABLUHRANGKHAWL
pracatical crop production
Significance of pulse to indian national economy and also its significant role to human nutririon like protein content and also its contribution to growing GDP
FARM POWER IN INDIA –
Farm Power is an essential input in agriculture for timely field operations for increasing production and productivity of land.
Farm power is used for operating different types of machinery like tillage, planting, plant protection, harvesting and threshing machinery.
Topic: Crop production and management
The science that deals with the cultivation of plants and rearing of animals for human use is called agriculture.
For 8th Standard
Check out our new PowerPoint presentation on " Crop Production and Management " | Introduction to Crop Production and Management by softcare solution. We know these things in our daily life. Let’s them understand some concept about Is Crop Production and Management. At the end of this video, you will be able to understand the following points on Crop Production and Management:
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1. Rabi crops.
2. Kharif Crops.
3. Agricultural Process and their steps.
4. Protection from weeds.
5. Harvestings concept.
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NCERT solutions for Class 8th Science.
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VERY ATTRACTIVE PRESENTATION CONTAINING THE FOLLOWING SLIDES: Agriculture, Crops, , Agricultural practices, Irrigation, Water logging, Weeding, Storage, Mixed Cultivation and Crop Rotation, NItrogen Fixation, Nitrogen Cycle, Animal Husbandary and many more
This one is the ppt on basic agricultural info.....about crops, about the techniques used
1) Preparation of soil
2) Sowing
3) Adding Manure and Fertilisers
4) Irrigation
5) Protecting from weeds
6) Harvesting
7) Storage,
and short point on animal husbandary
actually its specially for students of class 9 or 10 as it is one of the imp. project they have to make in school.
hope u like this........
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Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
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1. Crop
Production
and Management
QLEARNING OBJECTIVES
* * * * * * * * * * * * * * * * * * * * * *
After completion of the chapter, students will be able to
1. understand about agriculture.
2. explain the seasons for growing different crops, i.e., kharif crops, rabi crops
3.describe the process ofpreparation ofsoil used for growing crops.
4. explain the use offertilisers.
5. explain the importance of crop rotation.
6. understand the importance ofirrigation and different types of methods used for irrigation.
7. grive details on how to protect the crops fromweeds
8. explain the different foods we get from animals.
* * * * * * *
. . * * o * * * * o * .
* o******d******************°******
* * ************************
Food is the most vital source of energy for all organisms including us. We know
that among the living beings, it's the plants which prepare their own food and
all other animals, including human beings, are dependent on plants for food.
Agriculture began about 12,000 years ag0. Humans were food gatherers, ate
raw fruits and vegetables, hunted animals. Then, they learnt to grow crops and
this was the beginning of agriculture. They settled in farming communities
and started domesticating animals for food
Agriculture Do You Know?
Growing the same orop onthe
same sol year after yearis
called monoculture
The word agriculture comes from the Latin word ager meaning 'field' and
Cultura' meaning 'care. Agriculture means growing of plants or raising of
animals for human use. Quality in agriculture comprises mainly of activities
that are essential in improving the environment for the growth of plants and
animals and thereby improving the usefulness of plants and animals. The
practice or the business of agriculture is usually called farming and the place
where the work is done is called a farm.
lants of the same type grown and cultivated at one place in large quantities
a field are known as crops. For example, crop of rice indicates that all the
plants grown in that field will have paddy plants. The product of cultivated
9
2. SCrenceV * * * * * * *
***
*'***********
* * * * * * * * * * * * * *
...
* * * * * * * *
the
Crops is known as crop produce. Based on
thetype of products obtained
Ops.
th.
crops are classified as cereals crops, pulses crops, oil crops and fibre crons
Fibre crop (Coton)
Cereal (Rice) Pulses (Chickpea) Oil crop (Sunflower)
The word Horticulture is derived from two latin words: Hortus' which means
garden', and 'cultura' which means 'care. Thus, horticulture is the branch
of science that deals with the growing and production of vegetables, fruits,
flowers and ornamental plants
ACTIVTY1
Making a herbarium
Visit the nearbyagriculture farm. You must have seen some plants growing in
different fields.
Collect some plants fromthefarm.
From these collected plants prepare herbarium specimens. Theteacherwill
help you in preparing herbarium specimens.
Ripening of strawberries
(Horticulture)
Write some uses of different crop plants collected from the farm.
Now visit the agriculture farm at the time when crops are
maturing.
Collect some matured seeds ofthe same plants that are collected above.
Observe these seeds and draw a sketch on a chart paper.
Grop Seasons in India
CROP SEASONS IN INDIA
Kharif
Rabi
(June-October) (October-April)
A herbarium sheet
Maize crop Paddy crop Wheat crop Mustard crop
There are two main crop varieties depending on the seasons. They are
Kharif crops: These are sown in rainy season starting from the month
of June and harvested around October. For example, paddy, pigeon pea
(Arhar), maize, cotton, soyabean and groundnut are kharif crops.
Rabi crops: These are sown in winter season starting from the montn
of October and harvested around April. For example, wheat, gram, peas,
mustard, linseed, oilseed and barley are rabi crops.
10
3. Crop Production and Managerment
* * * * * * * * * * * * * *
*********************** *o****e*. *so*oo*** *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * " * * * * * * * * * * * * * * * * * * * * * * * * * *
*********************
Agricultural Practices
The steps involved in agriculture which are followed by farmers for good crop
yield are known as agricultural practices
The various agricultural practices are as follows:
) Soil preparation
Gi) Manuring or adding fertiliser
(v)Weeding
(vil) Threshing, winnowing
() Selection and Sowing of seeds
iv) Irrigation
(vi) Harvesting
(vii) Storage
Let us discuss these one by one.
I.Soil Preparation
The soil has to be prepared and be made ready for cultivation. This
involves the basic steps like ploughing or tilling and levelling.
Ploughing
The loosening and turning of a few inches of the top soil is known
as ploughing or tilling. If the soil is dry, it may need watering before
ploughing. Ploughing is important because:
) It helps in loosening the soil so that it can hold more water
and air. The air helps the roots of crops to breathe, even
though they penetrate deep into the soil.
i) The loose soil also helps in the growth of earthworms and
microbes which make the soil rich in nutrients. They are friends
of the farmer since they help in further turning and loosening of
soil. They also add humus to the soil.
(ii) It is also easy to mix the fertilisers and manures in the loose
soil.
Traditional method of
ploughing soil using oxen
T9055
(iv) It helps in removing the weeds by uprooting them.
(v) Loose soil allow growth of roots into the soil for firm binding.
(vi) Soil contains minerals, water, air and some living organisms.
Dead plants and animals get decomposed by soil organisms.
The nutrients, from dead plants and animals, are again absorbed
by plants.
Modern method of
ploughing soil using tractor
Levelling
Even after ploughing, big lumps of soil (called crumbs) may remain in the
field. These are crushed using wooden or iron planks called levellers and
this process is called levelling. A leveller is driven by a machine or animals.
Levelling is importantbecause
levelling helps in preventing the loss of moisture from the ploughed soil.
levelling allows the soil to settle so that it is not eroded by wind or water
levelling brings uniformity to the field so that water and manure can be
distributed evenly to all parts of the fields
Levelling the soil
Agricultural Implements
Before selection and sowing of seeds, it is necessary to loosen and break the
soil to the size of grains for better yield.
The main implements used for this purpose are: Plough, Hoe and Cultivator.
11
4. SCenceVi . r s a t r t s n *****. *********** * ******ie**t*********e*s**A*ers
****
Plough: This tool is being used since ancient timesfortilling (or ploughinai
the soil, adding fertilisers to the soil, removing the weeds, turning the soil
etc. It is a wedge-shaped block of wood or iron which is either driven by
oxen, horses or camels and even tractors. It has a strong triangular iron
strip known as ploughshare that penetrates the soil to make furrows. The
ploughshare is attached to a long log of wood which is known as ploug
shaft. It has a handle at one end. The other end of the plough shaft is
attached to a beam which is kept on the animal's neck while ploughing
Hoe This tool is used for
removing
loosening the soil. It consists
of a long rod of wood or iron
There is a handle at one end of
-Plough shaft
Ploughshare
Plough
Grip
weeds, and for
Beam
Handle
Rod
hoe. A strong, broad and bent
plate of iron is fixed below the
handle and works like a blade.
Bent plate
A hoe
The other end is attached to a
beam which is kept on the neck of bullocks. Thus, a hoe
is also pulled by animals.
Cultivator: This tool is used for loosening and turning
the soil in the fields quickly. The use of cultivator
saves labour and time.
II. Selection and Sowing of Seeds
The farmers today are aware of the fact that good
quality of seeds is a must for a good crop. The farmer
Cultivator therefore must select the seeds that are
healthy
of
goodquality
dried properly and have no dampness that may encourage the growth of
fungi
Do You Know?
In india, a governmentbody
called the National Seeds
not mixed with the seeds ofweeds
free from any infection
Corporation (NSC) is involved in
the production of good quality
agricultural seeds
stored in strong bags
free from insects and pests
not contaminated with wastes, rotting food materials, excreta of animals,
etc.
ACTIVITY12
To test the viability of seeds
Take some kidney beans (from the stock which are to be used for sowing)
and soak it overnight in water.
Remove the seed coat and chop thin slice of one of the cotyledons.
12
5. Crop Production and Management
. ******** .
********** *****s* * * * ' * * * * * * * * * * * s * e * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ' * *
Put the slices of seed in the Petri dish, add few drops of dilute sulphuric acid
and leave it for some time.
If
the seed turns blood red then it is viable to grow and if not, then it is not nt
for growing.
The process of spreading the seeds in the soil to germinate is knon
as sowing. For sowing seeds, the following points must be kept in
mind:
Proper spacing of the seeds must be ensured. This is because
Overcrowding of the seeds may result in a shortage of nutrients, air,
sunlight, water and can kill the seedlings.
The seeds must be sown in proper rows so that watering them or
transplanting them is easy. Cotton, potato, maize, soyabean are all
row crops
Sowing seeds
The seeds must be sown at a reasonable depth. If they are sown too
deep they may suffocate without air and if they are spread on the
soil, they may be eaten up by the birds.
Seeds must be sown in proper season.
Soil must be prepared well so that it has adequate moisture content
for the germination of seeds.
Rows of potato plants
Methods of Sowing Seeds
The seeds can be sown by the following methods:
Broadcasting: In this method, seeds are sown manually, spread in the
entire field with no uniformity of rows, no proper spacing and not in the
proper depth of the soil. Cereals like, wheat and rice are grown by this
method.
Drill sowing and dribbling (making small holes in the ground for seeds) are
better methods of sowing the seeds. Once the seeds are put in the holes,
they are then covered with soil. This saves time and labour and prevents
the damage of seeds by birds.
Broadcasting of seeds
Seed Drill: Another method of sowing the seeds is with the help of a
simple device consisting of a bamboo tube with a funnel on it attached
to a plough. As the plough moves over the field the tube attached to it
leaves the seeds kept in the funnel at equal distance, and depth. The
plough keeps making furrows in the soil in which the seeds are dropped
by the seed drill. This ensures that the seeds also get covered by soil
after sowing. Traditionally, bullock driven seed drills were used, which
had just one long tube with funnel. The tractor driven seed drill is a
modern form of this method which has 5 to 6 iron tubes joined together
Drill sowing
with a common funnel at the top.
ACTIVTY13
To segregate healthy and good seeds from the unhealthy ones
Take handful of seeds which are to be grown and add it into the container
filled with water. Let the seeds remain under water. After some time you will
notice that some seeds are afloat and some sinks down to the bottom of the
container. Seed drill
13
6. CenceV *** ersmby*nsoassan erti.*****to***otgar*****ees***otss*****s*st******** *******dner**oe**.sstras.,....
.Thisshowsthat the seedswhich are either hollowfrom inside or not developed
fully are lighter and so they keep afloat. These are not fit for sowing.
The seeds which are healthy and good, sink to the bottom and are
recommended for sowing.
Transplanting. In case of some crops like rice, tomato, onion, chilli and
brinjal, seeds are not directly sown in fields. These seeds are first sown in
seed beds called nurseries. After the seeds have grown into small plantlets
called seedings, only healthy and well developed seedlings are transferred
and transplanted in the field. This process of transferring the seedlings
from the nursery to the main field by hands is called transplanting.
I. Manuring or Adding Fertiliser
Manuring is the process of adding manure into the soil for better yield of
crops.As the continuous growing of crops takes place, they keep on using
Some nutrients naturally available in the soil according to their needs.
The nutrients get used up in some time. This results in low yield of crops.
Therefore, it is important that the nutrients of the soil should
be replenished. This is done by either natural methods or by
adding organic manure or fertiliser to the soil.
Manures are organic substances obtained from dead plant
and animal wastes. A chemical fertiliser is a salt containing
necessary plant nutrients in concentrated form, to provide
quick replenishment of nutrients and restore its fertility. Some
examples of fertilisers are urea, ammonium sulphate, super
phosphate, potash, NPK, etc.
The excessive use of fertilisers gives rise to soil and water
pollution and also affects the fertility of the soil. The use of
fertilisers should be minimised by adopting natural methods
Adding fertiliser and
manure to the soil
of increasing the fertility of soil.
DoYouKnow?
Most widely used fertilizers are
NPK fertlizers that are rich
Differences between Manure and Fertilisers
Manure
Fertiliser
in nitrogen, phosphorus and
potassium salts.
1. Manure is natural. Fertiliser is man-made inorganic salt.
2. Manureis obtained from
decomposition of plant, animal
or human wastes by some
microorganisms.
Fertiliser is prepared in factories from
chemical salts.
3. Manure is not very rich in plant
nutrients. It is not 'nutrientspecific'
Fertiliser is rich in plant nutrients like
nitrogen, potassium and phosphorus. It
is'nutrientspecific'.
4. Manure is cheap and easily available. Fertiliser is costly.
5. Manure adds humus to the soil. Fertiliser does not add humus to the soil.
Natural Methods to Maintain Soil Fertility
Field fallow
One method of allowing land to naturally regain the nutrients is to leave it free
or fallow for one or more seasons. The dead plants, animals and other organicC
matter that get collected on the field are decomposed by microorganisms.
14
7. Crop Poduction and Management
*****"************************************** *
*.* s. ******"**
*
* * *
* * * * * * * * * * a * * * **
***************************'******'*************
Therefore, the nutrients are returned to the soil.
Mixed cropping
The practice of growing two ór more crops simultarneously
on the same piece of field is known as mixed cropping.
It is an age-old practice in our
country. Farmers mix the
seeds of two crops and sow them in the field. The crops
are chosen in such a way that the products and waste
materials from one crop help in the growth of the othercrop
For example, if a cereal crop such as wheat is grown along
with a leguminous crop such as pulse (e.g, gram), then the
uptake of nitrogen from the soil by cereal is compensated
by the addition of nitrogen in the soil by the nitrogen-fixing
bacteria like Rhizobium present in the legume. Mixed cropping
Crop rotation
Wheat crop is planted during the month of November and harvested
in March and April. Rice crop is planted in June-July and harvested
in October-November. Now in between these two seasons, the land
Wheat
November
lies empty. Instead of leaving it as it is, the farmers plant a pulse
crop during this time. So, by the time the farmer has to plant the
cereal crops, the pulse is ready to be harvested. The process of
growing a crop in between two similar crops is called crop rotation.
This method maintains soil fertility, prevents crop diseases and
pests, and ultimately gives better orop yield.
Pulse
Rice
May
June
Crop rotation
However, these natural methods alone are not enough to maintain the fertility
of the soil and farmers have to add manures and fertilisers sometimes.
ACTVITY14
To show the effect of manure and fertiliser on the growth of plants.
Germinate some moong seeds for 12-18 hours. Let them grow into seedlings.
Take three empty pots orvessels. Mark them as A, B and C.
Add little amount of soil mixed with a little cow dung manure in Pot A.
Put the same amount of soil mixed with a little urea fertiliser in Pot B.
Take same amountof soil without adding anything in Pot C.
Poursame amount of water in each glass and plant the seedlings in them.
Keep them in a sunny place and waterthem daily.
What change do you observe in theirgrowth after 7 to 1o days?
You will observe that seedlings planted in Pot C show the minimum growth.
Seedlings planted in soil containing manure in Pot A show better growth,
whereas seedlings planted in soil containing urea fertiliser in Pot B show the
maximum growth as well as the fastest growth.
C
Advantages of Manures
Organic manure is considered better than fertilisers because:
() t enhances the water holding capacity of soil.
(i) It makes soil porous due to which exchange of gases becomes easy.
(in) It increases the number of useful microbes
(v) It improves the texture of soil
Growing seedlings with
manure and fertiliser
15
8. nce-Vl ** ,
* * * * * * * * * * * * ° * * * * * * * * * * * * * t * * * * e t u r t e * * * * * * * * * * * * * * * * * * ' * * * * * ' * * * * * ' * * * * * * * * * * * * * ' * * * * * * * * * * * * * ' * * * * * * * * * * ' * * * * * * ' * * * * * * * * * * * * * * o . ,
SampleCuestions
Q.1. If you are given a dry piece of land for cultivation, what will you do befora
sowing the seeds?
Ans. The field will be watered, tilled and ploughed before sowing seeds.
[NCERTExemplar)
Q.2. (a) Name the tool used with a tractor for sowing seeds in afield.
(b) What are the advantages of using this tool? [NCERTExemplar]
Ans. (a) Seed drill.
(b) The advantagesare
() Seeds are sown at a uniform distance and depth to avoig
overcrowding.
Gi) After sowing, seeds are covered by soil, which prevents them from
being eaten by birds.
) It saves time and labour.
Q.3. What are organicfoods? [NCERT
Exemplar)
Ans. Crops cultivated without using any chemicals like fertilisers, pesticides,
weedicides, etc. are called organic foods.
MCHECK YOUR PROGRESS
1. Give examples of kharifcrops and rabi crops.
2. How does loosening ofsoil allow the roots to breathe?
IV. Irrigation
Imigation is the supplyofwaterto agricultural field at different intervals. Sufficient
Supply of rainwater is not always present, therefore, it is required by the farmers
O Supply water to the fields. Some crops require more amount of water, like
paddy plants and some require lesser amount of water, like wheat. Sometimes
the requirement of water depends upon the type of soil used for grwing crops.
A sandy soil requires more water than clayey soil. Loamy soil requires moderate
water due to its texture. The crops grown in summer need more water due
to excess of evaporation in comparison to the crops grown in winters. So we
should consider other factors too while planning for irrigating fields.
Importance of Irrigation
) It is necessary to provide moisture for the germination of seeds as seeds
do not grow in dry soil.
i) It protects the crop plants from frost and hot air currents.
ii) It helps in the absorption of nutrients by the plants from the soil.
IRRIGATION DEPENDS ON
Type of Crop Type of Soil Seasons
Sources of Irrigation
Each crop needs specific quantity of water at various stages of growth and
fruiting from sources like wells, tube wells, ponds, lakes, rivers, dams and
canals
9. Crop PrOduction and Maagemen
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raditional Methods of Irrigation
The aarious traditional methods of drawing water out from wells, lakes and
oat (pulley system), chain pump, dhekli and rahat (lever system).
nals were moal
Cattle or huma
ca or human labour is used in these methods. These methods are cheaper
but less efficient.
1s are commonly used for lifting water. These pumps are run by diesel,
Pumps are comm
hiogas, electricity and solar energy.
(a) Moat (b) Chain pump
(c) Dhekli (d) Rahat
Traditional methods of
irrigation
Modern Methods of Irrigation
It is important to use water
economically. Some modern methods of
irrigation have been developed for this purpose.
Sorinkler system: This method is useful on sandy soil and uneven land,
where the soil cannot retain water for long or where suf ficient water
is not available. Rotating nozzles are attached to perpendicular pipes
which is attached to main pipeline
lawns, coffee plantation and several other crops.
Drip system: This system involves providing water drop by drop at the
roots of the plants. Thus, water is not wasted. This system is practiced
in regions where water availability is less. However, this method is very
expensive. It is the best technique for watering fruit plants, gardens and
regular intervals. It is used for
Sprinkler system
trees.
Water Logging
In crops such as wheat and maize, excess water supply to the fields
results in a condition called water logging. Water logging reduces air
in the soil, thereby damaging the roots. Even soil organisms get killed
if water logging persists for a long time. Water logging increases the
amount of salts in the soil and damages the soil fertility.
Drip system
V. Weeding and Crop Protection
The unwanted plants growing along with the cultivated plants on their
own are known as weeds. They are a threat to commercial crops as they
competefor sunlight, air, nutrients and water. Some weeds interfere even
in harvesting and may be poisonous for animals and human beings. In
comparison to cultivated crops, the seeds of weeds germinate easily
and flower early. They produce large number of seeds. Water logging
They also spread diseases to the cultivated plants as they become hosts to
many insects and microorganisms. The process of removing weeds from the
fields is known as weeding. The best time for removal of weeds is before they
produce flowers and seeds.
DoYou Know?
Growth of weeds is more in
kharif crops in comparison to
rabl crops
10. Cence-Vl
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***************** *****.r**ans****susorvev**rssesssstneisssmeparnaa.erneaneatsna.sunarnagsns*rssessassss snoao....ssnrsneng.essssasanss.. .
The following methods are used for getting rid of the weeds.
Weeding is done by either pulingoutthe weeds with hands or by usina
hoe or harrow or seed drill.
It can be removed using trowel.
The chemicals used to kill the weeds are known as weedicides. One of
these chemicals used very commonly is 2,4D (2,4-Dichlorophenoxy actic
acid). This chemical kills only the weeds and not the cultivated crops. They
are sprayed during the vegetative growth of weeds before flowering and
seed formation. Since weedicides are poisonous, it may affect the health
of farmers. During spraying, they should cover their nose and mouth with
a piece of cloth.
Harrow
Some insects that do not cause harm to the crops can be made to breed
and grow. They then destroy the weeds leaving the crops safe.
Protection from Pests and Diseases
Organisms that cause diseases to the plants are called pathogens. The
organisms that damage or destroy the crops are known as pests.
Weeding by hand
The methods used to protect the crops from pathogen and pests are
Spraying the chemicals at regular intervals. Such chemicals are known as
pesticides. Some commonly used pesticides are DDT, BHC and malathion.
They are either sprayed by hand-operated machines or by low flying
aircraft, if the area to be covered is large.
Though the pesticides used are very effective, yet care must be taken while
using them. Excess use of pesticides is very harmful to human beings as they
irritate the skin and cause gastric and respiratory disorders.
Spraying pesticides
to protect orops
VI. Harvesting, Threshing, Winnowing
The process of cutting and collecting the matured crops from the fields is
known as harvesting. Almost all the crops complete their cycle of maturity in
3 to 4 mornths. The matured crops are cut manually using a sickle.
Harvesting is done with a machine known as harvester. Once the
crop is harvested then the grains are separated from the chaff.
Threshing is the process by which
the grains are separated from the
Threshing
is done manually by beating the
crops against the solid surface or
by stamping on by animals. The
harvested crop is spread on the
ground and the bullocks or camels
are made to walk over them again
harvested crop plants.
Harvesting crops
Thresher
and again till the grains come out of the chaff.
Do You Know?
Nowadays, tractors are used for doing this job. The leaves and the stems of
the crops get crushed into smaller pieces. The grains are then separated from
the chaff, dried leaves and stems of the crops in a machine or by winnowing.
Harvesting and threshing can be done simultaneously with the help of a
machine called combine. After threshing, grain is still mixed with chaff and
hay, and it has to be cleaned by separating from the chaff and hay before it
can be used. The process of separating grain from chaff and hay with the help
Pongal, Holi, Baisakhi, Bihu are
festivals associated with the
harvest season.
of wind is called winnowing.
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11. Op Production and Management
* * * * *
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***'****" .i*siso..e..s*..s*s... ** ***************
Do You Know?
Stubs are left in the field, which
are burnt by farmers. t causes
pollution and it may catch fire
and damage the crops
Combine harvesting
Sampleuestions
Q. Despite favourable climatic conditions, a farmer's crop failed to give
good yield. Give the possible reasons for this.
Ans. (a) He did not use good qualityseeds
(b) His field was not well irrigated
(c)Manures/fertiliserswere not properly applied.
[NCERT Exemplar]
(d) Weeds were not removed.
MCHECK YOUR PROGRESS
1. Weeding is usually done before flowering. Why do you think that is so?
2. Reena and her family recently harvested their wheat crop. But the crop
had both wheat grains and chaff. How should they separate wheat
grains?
3. Classify the following irrigation methods into traditional methods and
modern methods.
Drip system chain pump moat sprinkler system rahat well canal
VIL. Storage
The harvested grains have lots of moisture content, so the seed grains are left
in the field to dry in the sun before they are stored. Otherwise, the moisture
may spoil the grains by promoting the growth of fungus and moulds on the
stored grains, losing their germination capacity.
Storage of grains
in granaries
The grains must be stored properly in jute bags or metallic bins. Large scale
storage of grains is done in silos and granaries to protect them from pests like
rats and insects. Care must be taken that the grains are kept:
away from moisture
safe from rain
protected from pests and birds
in air-tight godowns
in proper bags for the purpose of transportation.
Dried neem leaves are used for storing food grains at home. For example,
when wheat is stored in iron drums, then some dried neem leaves are put in it.
For storing large quantities in big godowns, speci fic chemical treatments are
required to protect them from pests and micro-organisms.
Silos for storage of grains
Do You Know?
The branch of agricuture that
deals with varlous soil and
climatic conditions is called
agronomy
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12. SCience-VIll *****.
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***********.** * **'***** ***************"'****** **************"********** **************** . .
Crop
Improvement
After having made improvement in various agricultural
practices, it will be of no use if the quality of the grains is
not improved. Scientists are now working on producing
new varieties of crops with desirable features such asS
crops with more yield
crops with better qualityof grains, and
STEPS OF AGRICULTURAL PRACTICES
Ploughing
SoilPreparation
Leveling
Selection of Seeds Broadcasting
Drill sowing
Seed Drill
Sowing of Seeds
Manuring or Adding Fertiliser
crops which are disease resistant
This has been done by cross-breeding. Two plants with
different desired features are taken as parent plants.
The cross-breeding between them results in the new
generation plants with desired features.
maintaining fertility of soil
Pulley System
Irrigation Sprinkler System
Drip System
Pulling out by hand
Weedicides
With increasing population, the land available for
agriculture is decreasing, therefore, there is need to have
high yielding crops. Scientists are now experimenting to
develop new varieties of crops which are more resistant
to the climatic changes such as drought, heat, cold, winds
and also to various soil conditions.
Weeding
&
Crop Protection Pesticides
Sickle
Harvesting Harvester
by animals
Threshing
by machine or combine
Some of the high yielding varieties of crops are
WheatSonalika,Sonara-64,Kalyan Sona
Winnowing9- y wind
Silos
Storage
Granaries Rice: Jaya, Padma, IR-8, Pusa-205
Maize: Ganga, Rankit, Deccan hybrid
FoodFromAnimals
Like from plants we receive many food items from some animals too. They
provide us with edible products like mlk, cottage cheese, curd, meat, honey,
eggs, etc. So, in order to provide us with quality products animals need proper
food, care and shelter. The science which deals with breeding, feeding and
caring of domestic animals is called animal husbandry.
ANIMALS Pisciculture
The rearing of fish is called
pisciculture. Fishery is the
farming of fish. The fish found
in marine water are called sea
Dairying Poultry Fisheries Apiculture
Or
Pisciculture
Milk products Eggs and meat Honeybee
fish or marine fish, e.g., Salmon,
Hilsa and the fish found in fresh
Fish
Honey
water are called fresh water fish,
e.g., Rohu, Catla.
Apiculture
The rearing of honeybees is called apiculture. It is done on large scalein
farms. Honeybees produce honey by sucking nectar of flowers which is rich
in minerals and sugar.
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