Abstract
It has been said that except in sandy soils, as h rule, an application of farmyard manure is rather dangerous to cotton in our country on account of temperature. This experiment was performed to know the influence of farmyard manure mixed with chemical fertilizers on the development of cotton fibres through the growth of cotton plants in the light volcanic ash clay' soil. According to the result of this experiment the application of farmyard manure is very available to the growth and yield of cotton, but the length, strength and uniformity of cotton fibres are not changed specially by it except decrease of elasticity. However, it should be thought that the distributions of rainfall in 1948 was, more or less, different from those of normal years.
