Biology, asked by rutujapdesai8187, 1 year ago

What do you understand by ‘Water Logging? How does water logging damage the crops?

Answers

Answered by Tamatar
0
Waterlogging refers to the saturation of soil with water. Soil may be regarded as waterlogged when the water tableof the groundwateris too high to conveniently permit an anticipated activity, like agriculture. Crops need air to a greater or lesser depth in the soil.

Low levels of oxygen in the root zone trigger the adverse effects of waterlogging on plant growth. Waterlogging of the seedbed mostly affects germinating seeds and young seedlings. Established plants are most affected when they are growing rapidly. Therefore, if a soil becomes waterlogged in July, final yields may not be greatly reduced; soils are cold, the demand for oxygen is low and plant growth is slow at this time of year. Prolonged waterlogging during the warmer spring period could be more detrimental, however the probability for this to occur is much lower than waterlogging in July.
When plants are growing actively, root tips begin to die within a few days of waterlogging. The shallow root systems that then develop limit the uptake of nutrients (particularly nitrogen) and water, particularly when the soil profile starts to dry in spring. As a result plants may ripen early and grains may not fill properly.

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Answered by akshayvijay996pbc3yg
0
hi

Waterlogging means saturation of soil colloids with water that there is no aeration in that field . Most of the crops cannot survive that anaerobic condition except rice . Also due to water logging there is toxicity of certain elements like iron and manganese as well as deficiency of others like zinc

It can be prevented by draining the water or by growing crops having high water requirement and which can sustain in waterlogged environment like rice or eucalyptus but the best way to cope waterlogging is provision of drainage.
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