Question

Is excessive irrigation harmful to crops

Answer 1

Yes because it is harmful because the plants not only need water but air too and air is present in some spaces in the soil is we add excessive water the air will escape in the form of bubbles and no air will be present in the soil and like humans plants also need air for survival
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Answer 2

I think yes..
Water is very important for the growth of plants but excessive irrigation of field leads to water logging of soil. Too much water is harmful for crop production as discussed under:

1. Too much water is the soil inhibits the process of germination of seeds. It due to the reason that under these conditions the seeds do not get sufficient air to respire. Is due to the reason that under these conditions the seeds do not get sufficient air to respire .our might have observed that the seeds fail to germinate, if it rains soon after sowing. This is due to excessive water in the field, which affects the soil aeration.

2. Roots do not grow properly in a waterlogged field. You must have seen that potted plants do not grow well if they are given excess water. This is due to the reason that excess water affects soil aeration and hence plants roots do not grow properly.

3. Excessive water in the fi3eld increases the amount of salt on the surface of soil due to evaporation. The accumulation of salts damages the soil fertility, except rice; almost all crops receive as ever set back in their growth when excess water stagnates. Damage caused by excess water and consequent development of salt problem can be minimized by removing standing water from the fields through proper drainage system.

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