. Which of the following statement is not true for organic manure
(a) It enhances the water holding capacity of the soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to the soil.
(d) It improves the texture of the soil.
Answer: is (b) It has a balance of all plant nutrients.
Organic manure is obtained by decomposition of plants and animal waste which make the soil nutrient-rich. But it does not mean that organic manure provides all the nutrients in required amount hence option b) is wrong.