Class-8 (Crop Production And Management)

Chapter-1
Crop Production and Management
QUESTIONS FROM TEXTBOOK
Question.1. Select the correct word from the following list and fill in the blanks.
     Float, water, crop, nutrients, preparation
a) The same kind of plants grown and cultivation on a large scale at a place is called_____________.
b) The first step before growing crops is _________of the soil
c) Damaged seeds would___________ on top of water.
d) Far growing a crop, sufficient sunlight, _______________ and ___________ from the soil are essential.
Answer. (a) Crop
                (b) Preparation
                (c) Float
                (d) Water, Nutrients
Question.2. Match items in column A with those in column B.
Answer.
Question.3. Give two examples of each:
                     (a) kharif crops.   (b) Rabicrop
Answer. (a). Paddy and maize
                 (b). Wheat and gram.
Question.4. Write a paragraph in own words on each of the following:
(a) Preparation of soil
(b) Sowing
(c) Weeding
(d) Threshing
Answer. (a) Preparation of soil: Soil is prepared before Sowing the seed. 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. Tilling or loosening the soil is done by ploughs which are pulled by a pair of bulls. Tractor driven cultivators are also used to loosen the soil.

(b) Sowing: After preparation of soil it is ready for Sowing of seeds. The healthy and clean seeds should be selected. The Sowing is done by sends drills or funnel shaped tools. Seed drills are the modern instructions which sow the seeds at proper depth and proper distance.

(c) Weeding: The unwanted plants is the crops are called weeds. These weeds absorb the nutrients from the soil. So it is necessary to remove them
Weeds are either removed manually or by mechanical tools. The process of weeds is called weeding. Some chemical like 2,4-D are also used to kill the weeds.

(d) Threshing: Separation of grains from the chaff is called Threshing.when the Crop is harvested, it is cut along with the stalks. They are the separated and the gains are removed. Winnowing machine is used to separate grains from chaff.

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