Question

2 Micronutrients are required by plants in smaller quantities. From
the list given below, select only micronutrients required by plants.
Check Point 02
1 Name the nutrients provided by air and water.
N, P, K, Ca, Mg, S, Zn, Cu, Mb and CI-
3 Why some plants like sunhemp or guar are grown and mulched
by ploughing into the soil before sowing of the crop seeds?
4 In agricultural practices, instead of fertilisers, manures should be
commonly employed. Give one reason,
5 Organic farming is an environment friendly farming system
Mention one advantage supporting the above claim.​

Answer 1

Answer:

geography

Explanation:

4) fertilizers are the chemicals used which makes the deficient soil fulfilled of minerals . it also increases acidity to the soil ad some crops are unable to grow and thus makes the land barren whereas manure besides providing all those chemical elements to the soil also enhances its fertility by providing a good amount of humus to the soil. so manute should be used.

5) because it involves the rotation method of cultivation where all the crops get good amount of water and the soil does not waterlogged with excess of water moreover it doesn't cause any pollution in any way because it is just a mixture of waste products of dead plants animals and some other forest wastes so it is eco friendly.

I hope it helps

Answer 2

Answer:

1.Carbon (C), hydrogen (H), and oxygen (O) are supplied by air and water. The six macronutrients, nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S)

3.Green manure: Before sowing crop seeds, some plants like sunhemp or guar are grown and then mulched by ploughing them into the soil. These green plants thus turn into green manure which helps in enhancing growth of plants by supplying them with nitrogen and phosphorous