The correct option is B False
∙ Manure is prepared by decomposition of organic waste matter by microbes. In the process of breaking down the matter, they release useful nutrients like nitrogen and other nutrients in small amounts to the soil. It promotes better survivial of the organisms living in the soil, increasing the soil activity, hence fertility.
∙ It improves the soil structure by letting more air into the soil which is essential for soil organisms.
∙ When added to sandy soils, it increases the soil holding capacity. When added to clayey soils, it helps in drainage and avoids water logging.