NCERT Solutions for Class 8 Science Chapter 1
Important NCERT Questions
8th Chapter 1 Crop Production and Management
NCERT Books for Session 2022-2023
CBSE Board and State bord
Questions No- 4
Write a paragraph in your own words on each of the following: Preparation of soil, Sowing , Weeding , Threshing
Share
Preparation of Soil:
Preparing soil involves essential steps to ensure it’s ready for planting. Plowing breaks and loosens the soil, while harrowing further smoothens and levels it. This process improves aeration and nutrient availability, creating an ideal environment for seed germination and root growth.
Sowing:
Sowing is the precise planting of seeds in the soil. It involves placing seeds at specific depths and spacing in the prepared seedbed. Proper sowing ensures good seed-to-soil contact, promoting uniform germination and optimal plant growth.
Weeding:
Weeding involves removing unwanted plants (weeds) that compete with crops for resources. It can be done manually or mechanically to prevent weeds from hindering crop growth, ensuring healthier plants and improved yields.
Threshing:
Threshing is the separation of grains/seeds from harvested plants. Traditionally manual, it’s now mechanized using threshers to efficiently separate grains from husks or pods, making the produce ready for further processing or storage.
These agricultural practices are fundamental in setting the stage for successful crop growth, managing weed interference, and efficiently processing harvested crops for consumption or storage.
(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 which are friends of the farmer and add humus to it. Also, turning and loosening of soil brings the nutrient-rich soil to the top so that plants can use these nutrients.
(b) Sowing
Sowing is the most important part of crop production. Before sowing, good quality seeds are selected. Good quality seeds are clean and healthy seeds of a good variety. Seeds can be sown by seed drill or manually.
(c) Weeding
Weeds are unwanted plants that grown along with crops and removal of weeds is known as weeding. Weeds can be removed either manually by using tools like khurpi or by using weedicides like 2, 4 – D. These are sprayed in the fields to kill the weeds.
(d) Threshing
The process of separation of the grains from the chaff is called threshing. This is carried out with the help of a machine called ‘combine’ which is in fact a combined harvester and thresher.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-1/