The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers. / A soil depleted of nitrogen by cropping with Sudan grass and removing all the residues was planted to Upland (DP 90) and Pima (S-6) cotton. Nitrogen was added in the form of urea at three different stages of plant growth, applying a total of 0, 50 or 100 pounds of nitrogen. The yield of lint from DP 90 was increased where nitrogen was added; however, there were no differences in yield with the timing nor total amount of nitrogen added. In the case of S-6, fertilizer nitrogen did not increase yield.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers. / Boligrow (an aluminum sulfate material from Sweden), gypsum and soil sulfur were evaluated as amendments on soil where differential water uptake had historically been a problem. A crop of cotton was grown and the yield of cotton was taken to determine if an economical change was effected by the amendments. Statistically there was no difference between treatments. A soil analysis indicated that sodium was not a problem in this soil, so texture was probably more related to the differential water uptake problem than was the chemical makeup of the soil.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.

The 1985 and 1986 Cotton Reports have the same publication and P-Series numbers.