Question:
Which of the following statements is not true for organic manure?
(a) It enhances water holding capacity of soil
(b) It has a balance of all plant nutrients
(c) It provides humus to soil
(d) It improves texture of soil
Solution:
(b) Organic manures are obtained from decomposition of plant and animal wastes that are rich in nutrients and humus.
But all nutrients might not be present in a proportionate amount in it, thus will not solve : the problem if soil is particularly deficient in one or more
specific nutrient.