NCERT Solutions for Class 8 Science Chapter 1 – Crop Production and Management
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CBSE Class 8 Science Chapter 1 – Crop Production and Management
In NCERT Solutions for Class 8 Science Chapter 1, you will study agricultural practices, crop production, and management, different types of crops, the climatic and nutritional requirements of crops, preparation of crops, harvesting, storage, different methods of irrigation, food from animals.
Sub-topics covered under NCERT Solutions for Class 8 Science Chapter 1
- 1.1 – Agricultural Practices
- 1.2-Basic Practices of Crop Production
- 1.3- Preparation of Soil
- 1.4 -Sowing
- 1.5 -Adding Manure and Fertilizers
- 1.6 -Irrigation
- 1.7 -Protection from Weeds
- 1.8 -Harvesting
- 1.9 -Storage
- 1.10- Food from Animals
NCERT Solutions for Class 8 Science Chapter 1
In NCERT Solutions for Class 8 Science Chapter 1, you will learn about agricultural practices, crop production, steps involved in crop productions, food from animals. Let us now discuss the subtopics in detail.
1.1- Agricultural Practices
In this, you will study the different types of crops.
1.2-Basic Practices of Crop Production
In this, you will study the methods involved in crop production.
1.3- Preparation of Soil
In this, you will study the preparation of soil for growing crops by different methods such as by plowing, by the cultivator, etc.
1.4- Sowing
In this, you will study the sowing the seed manually or with the help of a machine.
1.5 -Adding Manure and Fertilizers
In this, you will study the nutrient required for the healthy growth of plants by adding fertilizers or manure.
1.6 –Irrigation
In this, you will study different methods of irrigation i.e. traditional methods such as pulley-system, chain pump, dhekli, lever system and modern methods such as drip, sprinkler irrigation
1.7 -Protection from Weeds
In this, you will study to control the growth of the unwanted plant with the crop by weedicides.
1.8 –Harvesting
In this, you will study the cutting of crops after maturing by thresher, cleaning of crops i.e. winning.
1.9 –Storage
In this, you will study to protect the crops from microorganisms and store them.
1.10- Food from Animals
In this, you will study the products obtained by animals by rearing them.
You can download NCERT Solutions for Class 8 Science Chapter 1 by clicking on the download button below
Solved Questions for You
Question 1: Give two examples of each:
(a) Kharif crop
(b) Rabi crop
Answer: Depending upon their growing season, Indian crops are classified as Rabi and Kharif crops.
- a) The crops, sown at the beginning of the rainy season (June-July), are known as Kharif crops or summer season crops. Examples- rice, groundnut.
- b) The crops which are sown at the beginning of winter (October-November) are known as Rabi or winter season crops. Examples- wheat, gram.
Question 2: Explain how fertilisers are different from manure.
Answer: Â Manure is obtained by decomposition of waste products of plants, animals and other natural materials in fields which make it rich in organic matter. Fertilizers are the inorganic chemical substances that serve as a source of nitrogen, phosphorus and potassium and lack organic matter.
Fertilizers are produced in factories. Since manure consists of nutrients in small quantities, large servings of manure are required by plants. On the other hand, is rich in nutrients, fertilizers are required in small quantities. Being organic in nature, manures are ecofriendly while wash off of fertilizers to water bodies causes water pollution. Excessive use of fertilizers also makes the soil infertile.
Question 3: What are weeds? How can we control them?
Answer: Weeds are unwanted and uncultivated plants that grow with crops and compete with crops for nutrients and can also cause crop toxification. Weeding is the removal of weeds and is mostly done before flowering begins in crop plants. It is done using a trowel, harrow or weedicides. The trowel is used in manual removal of weeds. Ploughing/tilling of the soil, before seed sowing, using plough or cultivar followed by breaking the leftover soil crumps using leveller also removes the weeds. Similarly, use of weedicides, the chemicals that control the growth of weeds, is also practised.
Question 4: If wheat is sown in the Kharif season, what would happen? Discuss.
Answer: Â Wheat is a Rabi/winter season crop which is sown at the beginning of winter (October to November). Basic climatic requirements for the wheat crop are moderate temperature conditions, no waterlogging and frost-free days. It requires water supply during flowering and before tilling only. If wheat is sown during Kharif season (summers), months of higher temperatures (May-June) and excessive water supply during the rainy season would adversely affect the crop productivity.
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