Effect of Fertilizers on the Length of Cotton Fiber 1

p REVIOUS work at the Texas Agricultural Experiment Station has shown that application of complete fertilizers to cotton Kirvin fine sandy loam and Lufkin fine sandy loam, both of which respond to applications of phosphoric acid, had no appreciable effect on the length of fiber2 In a few instances, however, applications phosphoric acid on the Kirvin fine sandy loam soil produced increases in the length of fiber, which, although statistically significant, were not large enough to be detected consistently in the commercial classing of cotton. It was thought desirable to make additional studies on other soils low in phosphoric acid to determine whether fertilizers have any effect on length of fiber. Accordingly, studies were made on Lake Charles clay at Texas Substation No. 3, Angleton, on which cotton responds readily to applications of phosphoric acid. The work was conducted in ~932 and ~933, but the test in i932 was destroyed by a tropical hurricane on August ~3, thus results are available for x933 only.