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Solutions 1. Crop Production And Management - Chapter Review | Class 8 Science - Toppers Study

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Solutions 1. Crop Production And Management - Chapter Review | Class 8 Science - Toppers Study

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Chapter 1 Science class 8

Chapter Review class 8 Science Chapter 1. Crop Production And Management

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Solutions 1. Crop Production And Management - Chapter Review | Class 8 Science - Toppers Study
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1. Crop Production And Management

| Chapter Review |

Solutions 1. Crop Production And Management - Chapter Review | Class 8 Science - Toppers Study

Chapter Review:

Plants of the same kind are grown and cultivated at one place on a large scale, it is called a crop.
Khurpi, sickle, shovel, plough, etc. are some agricultures tools.
Crops are of different types like cereals, vegetables and fruits.
According to season there are two type of crops – (i) Rabi crops and (ii) Kharif Crops.
Rabi crops are wheat, gram, pea, mustard and linseed.
Paddy, maize, soyabean, groundnut, cotton, etc., are kharif crops.
The process of loosening and turning of the soil is called tilling or ploughing.
The levelling of soil is done with the help of a leveller.
Nowadays ploughing is done by tractor driven cultivator.
The use of cultivator saves labour and time.
The substances which are added to the soil in the form of nutrients for the healthy growth of plants are called manure and fertilisers.
Manure is an organic substance obtained from the decomposition of plant or animal wastes.
Rhizobium bacteria are present in the nodules of the roots of leguminous plants.
Rhizobium bacteria fix atmospheric nitrogen.
A fertiliser is an inorganic salt which is prepared in factories.
Fertilisers are very rich in plant nutrients like nitrogen, phosphorus and potassium.
The supply of water to crops at different intervals is called irrigation.
The sources of irrigation are— wells, tubewells, ponds, lakes, rivers, dams and canals.
The traditional ways of irrigation are moat, chain pump, Dhekali and Rahat.
Modern methods of irrigation help us to use water economically.
Modern methods of irrigation are sprinkler system and drip system.
These undesirable plants are called weeds.
The removal of weeds is called weeding.
Weeds are also controlled by using certain chemicals, called weedicides, like 2,4-D.
The cutting of crop after it is mature is called harvesting.
The grain seeds need to be separated from the chaff. This process is called threshing.

Other Pages of this Chapter: 1. Crop Production And Management

1. Chapter 1. Crop Production And Management | Chapter Review

2. Chapter 1. Crop Production And Management | Text Book Exercise

3. Chapter 1. Crop Production And Management | Text Book Exercise

4. Chapter 1. Crop Production And Management | Additional Questions With Solutions

5. Chapter 1. Crop Production And Management | Additional Questions With Solutions

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