Rainfall during the month of August has been beneficial to the cotton crop in many areas. However, in the far southwestern corner of the state, we are still struggling. With the crop entering the bloom stage in mid- to late July in many areas, the rainfall either significantly improved prospects or if it was not obtained, crop stress was an issue. The Mesonet graphic for rainfall in the state over the last 30 days really summarizes this very well. When considering the marginal at-plant profile moisture, it can be seen that the far southwestern corner has not obtained the rainfall to enable a dryland crop to produce substantial yield. It’s interesting to note that over the last 30 days, the Panhandle has received more rainfall than the southwestern corner of the state. Other areas in the cotton producing counties have shown a marked improvement. The irrigated crop is progressing very well where adequate irrigation capacity and water quality are available. The additional rainfall in some of these areas has really provided an opportunity for good to excellent yields. One concern many producers have, especially in the Caddo/Blaine/Custer counties irrigated area, is adequate heat units to mature a somewhat late planted but well-set crop.
August 22, 2013 Volume 3 Edition 8 Volume 1 Edition 7
OSU Southwest Oklahoma Research and Extension Center