Write a paragraph in your own words on each of the following.
a) Preparation of soil
b) Sowing
c) Weeding
d) Threshing
ANS)
a)Preparation of soil: -
It is the first step of before growing of crop in which soil is turned and loosened.
The softening of soil allows the deep penetration of roots into soil.
The soil preparation includes ploughing, levelling and manuring.
Ploughing is done with the help of plough or tractor.
Levelling is done by leveller to make loosen soil smaller the even.
b) Sowing: –
The process of broadcasting seeds in soil to grow crop is called sowing.
Sowing is done with the help of seed drill or broadcasting with hands.
The healthy seed is selected for proper growth.
The distance between seeds must be sufficient for proper growth.
c) Weeding: –
A B
I. Kharif crop a. Urea and super phosphate.
II. Rabi crops b. Animal excreta, cow dung, urine and
Plant wastes.
III. Chemical fertilisers c. Wheat, gram, pea
IV. Organic manure d. Paddy and maize.
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The unwanted plants that grow along with main crop and compete with crop for light, food and
other substance are called weeds.
Removal of these unwanted plants is called weeding.
Weeding is done with hands of using chemicals called weedicides.
d) Threshing: –
In harvested crop, the grain seeds are separated from chaff.
This process is called threshing.
This is carried out by using a machine called combine.
Threshed seed is winnowed to obtain clean seeds.
Answers
Explanation:
(a) Preparation of soil: The preparation of soil is the first step before growing a crop. One of the most important tasks in agriculture is to turn the soil and loosen it. This allows the roots to penetrate deep into the soil. The loosened soil helps in the growth of earthworms and microbes present in the soil.
(b) Sowing: Sowing is an important part of crop production. Before sowing, good quality, clean and healthy seeds of a good variety are selected. Farmers prefer to use seeds which give high yield. The process of putting seeds into the soil is called sowing. The tool used traditionally for sowing seeds is funnel-shaped. Nowadays a seed drill is used for sowing with the help of tractors. This tool sows the seeds uniformly at a proper distance and depth.
(c) Weeding: Some undesirable plants grow along with a crop. These unwanted plants are called weeds. The process of removing these unwanted plants is called weeding.
(d) Threshing: The process of separating grain seeds from the chaff is called threshing.