Senath is the southern most location with a silt loam. The wind blown sand and disease certainly had an effect on this trial and many plots had to be discarded. The trial did recover very well and had some very good yields.

The Clarkton trial was a satisfactory trial on a sandy soil. The soil does vary somewhat throughout the test. The CV, coefficient of variation, was twenty-three percent. This tells us that there was twenty-three percent of the variation that was due to something other than differences between varieties. In cotton yield trials the CV should be below fifteen percent. The precision of the test needs to be improved.

The Sikeston trial was one of the most uniform tests that I have ever had. It was on a silt loam soil. The yields were very good. This year was one of those rare years when the north part of the Bootheel was better then the south end. The CV was very low, eight percent, indicating that the results are very reliable. It is most unusual to have a CV this low. The lower the CV, the more reliable the data becomes.

The silt loam trial at the Lee Farm had two spots that were probably due to blowing sand. It had an average CV of fifteen percent.

Weather in the spring was very hard on the trial at Senath and many plots were lost due to poor stands. However, the plots that remained did very well. With so many missing plots the data in this trial is not as reliable with a CV of thirteen percent.

The test on clay soil was four degrees warmer than the silt loam soil. But as is typical for clay soil growth slowed down during the growing season. The CV was sixteen percent, which is fairly respectable. The crop started the season with very good early season growth.

All tests were adequately irrigated.