Complete the following table with reference to soil.ActionEffectResult

Complete the following table with reference to soil.ActionEffectResult (W.R.T. fertility)Construction of embankments.Wind speed decreased.Farm land is kept fallow for some period.Helps to maintain the pH balance and increase the proportion of humus.Increases the fertility of soil.Regular use of organic manures, vermicompost and compost.Check the velocity of water running along the slopes.Litter is burnt in the farm.Decomposed vegetal litters, roots of plants and remains of animals.Salt content in the soil increases.Leads to the lowering of humus content in the soil.

Answer»

Action	Effect	Result (W.R.T. fertility)
Construction of embankments.	Protects soil from being washed away.	Protects fertility of soil.
Planting trees.	Wind speed decreased.	Protects fertility of soil
Farm land is kept fallow for some period.	Helps to maintain the pH balance and increase the proportion of humus.	Increases the fertility of soil.
Regular use of organic manures, vermicompost and compost.	Humus content increased.	Increases the fertility of soil.
Trenches are dug across a slope.	Check the velocity of water running along the slopes.	Protects fertility of soil
Litter is burnt in the farm.	Decreases the amount of organic material in soil.	Decreases the fertility of soil.
Decomposed vegetal litters, roots of plants and remains of animals.	Proves favourable for micro organism.	Increases the fertility of soil.
Excessive Irrigation	Salt content in the soil increases.	Decreases the fertility of soil
Chemical fertilizers used excessively.	Leads to the lowering of humus content in the soil.	Decreases the fertility of soil