CROP
When plants of same kind are grown and cultivated at
one place on a large scale, it is called a crop.
TYPES OF CROPS
Kharif Crop:- The crops which are sown in rainy season are
kharif crops.
Examples: Paddy, maize, soyabean, groundnut, cotton etc.
Rabi Crop:- The crops grown in the winter season are
called rabi crops.
Examples: Wheat, gram, pea, mustard, linseed etc.
BASIC PRACTICES OF CROP
PRODUCTION
PREPARATION OF SOIL
Soil is prepared before sowing the seeds. The soil is loosened
to increase the absorption of water and manures. Loosening
of soil particles adds humus and nutrients in the soil that
increases crop yields.
*The process of scattering or putting seeds into the
ground is called Sowing.
*Before sowing good quality seeds are selected.
Good quality seeds are clean and healthy, free from infection
and diseases.
*There are two methods of sowing seeds- SOWING BY
HAND and SOWING WITH A SEED DRILL.
*
SOWING
ADDING MANURES AND FERTILISERS
MANURES
1. A manure is a natural substance
obtained by the decomposition of
animal wastes like cow dung, human
waste and animal residue.
2. Manure can be prepared in the
fields.
3. A manure provides a lot of organic
matter like humus to the soil.
FERTILISERS
1. A fertiliser is a salt or an
organic compound.
2. Fertilisers are prepared in
factories.
3. A fertiliser does not provide
any humus to the soil.
Repeated growing of crops in the same field removes lot of
precious mineral elements, organic matter and other materials from
the soil and to increase the nutrients in the soil we add Manures
and Fertilisers.
 All the crop plants need water for their growth.
 It is, therefore, necessary to supply water to the
crop plants in the fields, periodically.
 The process of supplying water to crop plants in the fields is called
Irrigation.
 Irrigation requirements of crops depends upon the nature of the
crop, nature of the soil and season.
 Sources of irrigation are rivers, canals, wells, tube-wells,
dams (reservoirs), ponds and lakes.
Sprinkler System Drip Irrigation
Furrow System Supply Channel System
Modern
Methods of
Irrigation
Traditional methods of irrigation are:-
1. Moat (Pulley System)
2. Rahat (Lever System)
3. Dhekli
4. Chain Pump
Modern methods of irrigation are:-
1. Sprinkler System
2. Drip System
3. Furrow System
4. Supply Channel System
HARVESTING STORAGE OF FOOD GRAINS
Thank You ..!!
By – Shipra Harshit

Class 8 science ch- 1 crop production and management

  • 2.
    CROP When plants ofsame kind are grown and cultivated at one place on a large scale, it is called a crop. TYPES OF CROPS Kharif Crop:- The crops which are sown in rainy season are kharif crops. Examples: Paddy, maize, soyabean, groundnut, cotton etc. Rabi Crop:- The crops grown in the winter season are called rabi crops. Examples: Wheat, gram, pea, mustard, linseed etc.
  • 3.
    BASIC PRACTICES OFCROP PRODUCTION
  • 4.
    PREPARATION OF SOIL Soilis prepared before sowing the seeds. The soil is loosened to increase the absorption of water and manures. Loosening of soil particles adds humus and nutrients in the soil that increases crop yields.
  • 5.
    *The process ofscattering or putting seeds into the ground is called Sowing. *Before sowing good quality seeds are selected. Good quality seeds are clean and healthy, free from infection and diseases. *There are two methods of sowing seeds- SOWING BY HAND and SOWING WITH A SEED DRILL. * SOWING
  • 6.
    ADDING MANURES ANDFERTILISERS MANURES 1. A manure is a natural substance obtained by the decomposition of animal wastes like cow dung, human waste and animal residue. 2. Manure can be prepared in the fields. 3. A manure provides a lot of organic matter like humus to the soil. FERTILISERS 1. A fertiliser is a salt or an organic compound. 2. Fertilisers are prepared in factories. 3. A fertiliser does not provide any humus to the soil. Repeated growing of crops in the same field removes lot of precious mineral elements, organic matter and other materials from the soil and to increase the nutrients in the soil we add Manures and Fertilisers.
  • 7.
     All thecrop plants need water for their growth.  It is, therefore, necessary to supply water to the crop plants in the fields, periodically.  The process of supplying water to crop plants in the fields is called Irrigation.  Irrigation requirements of crops depends upon the nature of the crop, nature of the soil and season.  Sources of irrigation are rivers, canals, wells, tube-wells, dams (reservoirs), ponds and lakes.
  • 8.
    Sprinkler System DripIrrigation Furrow System Supply Channel System Modern Methods of Irrigation Traditional methods of irrigation are:- 1. Moat (Pulley System) 2. Rahat (Lever System) 3. Dhekli 4. Chain Pump Modern methods of irrigation are:- 1. Sprinkler System 2. Drip System 3. Furrow System 4. Supply Channel System
  • 10.
  • 11.
    Thank You ..!! By– Shipra Harshit