Question

Explain the following terms: (a) Weeds (b) Seed drill (c) 2,4-D​

Answer 1

Answer:

Seed drills are the modern instruments which sow the seeds at proper depth and proper distance. (c) Weeding: The unwanted plants in the crops are called weeds. ... The process of removal of weeds is called weeding. Some chemicals like 2, 4-D are also used to kill the weeds.

(i) Kharif crops: (a) Food for cattle

(iv) Organic manure: (d) Wheat, gram, pea

(ii) Rabi crops: (b) Urea and super phosphate

(iii) Chemical fertilisers: (c) Animal excreta, cow dung, urine and plant wastes

Answer 2

Explanation:

Seed drills are the modern instruments which sow the seeds at proper depth and proper distance. (c) Weeding: The unwanted plants in the crops are called weeds. ... The process of removal of weeds is called weeding. Some chemicals like 2, 4-D are also used to kill the weeds.