Question

Chresard occurs in the soil
(A)Around soil particles
(B)Inside micropores
(C)Inside macropores
(D)In percolation chambers.

Answer 1

Hint: Chresard is the soil water available to plant and occurs in the soil in that type of space which is found between the soil aggregates and it is so small that surface tension holds water in place.

Complete answer:
Chresard occurs in the soil Inside micropores. Micropores, which are found between and within soil aggregates, are so small that surface tension holds water in place. Rather than draining away, water moves through micropores only suction is made by thirsty roots. This determines a soil’s water holding capacity.

Additional Information: The spaces between the soil particles are also classified by size. Generally, the
spaces that measure 0.08nm or are larger than 0.08nm are called macropores, while spaces smaller than that are called micropores. Macropores and micropores are very important for the movement of air, water, and roots through the soil. Both types of pores i.e micropores and macropores can hold air and water. But their sizes play different roles in both plant and soil health.
Being larger, and normally found between soil aggregates, macropores allow water to empty away through gravity and are often full of air and soil microorganisms.
 Due to this, macropores determine a soil’s aeration and porosity. If there are Insufficient macropores which means that the soil is compact and there are drainage problems.
So, the correct answer is ‘Inside micropores’.

Note: Sandy soil can have numerous macropores and micropores that water and nutrients simply leach away. Heavy clay soil, at the other end of the spectrum, has more micropores, so water and nutrients are held tightly. Loamy soil, within the middle, provides a healthy balance of micropores and macropores within the soil structure.