Cotton PGR decisions need to start early Never too early to start considering the factors that dictate the use of plant growth regulators in cotton.Past research has shown that there's no interaction between plant growth regulator and nitrogen application strategies on yield and fiber quality. KNOWING THE AGGRESSIVENESS of your cotton variety and environmental conditions during the production season are important in making plant growth regulator application decisions.

Late Planted Cotton and Plant Growth Regulators (PGR’s) We have a lot of cotton out there that was planted late because of replanting poor stands. So we often get the question about how to manage these acres with PGR’s. With late planted cotton the length of time the cotton blooms is the main thing that changes. The later you plant the shorter the window. So anything that is planted late needs to be pushed to retain all the bolls that it tries to set. This principal applies to PGR applications as well as insect management. Keep in mind that dry land acres in dry years like we are experiencing may not need a PGR.

Plant hormones help prevent bitter pit PGRs proving to be effective bitter pit management tools.

Understanding cotton PGR rainfastness Article talks about the rainfastness of cotton plant growth regulators, or PGRs, during a wet, hot cotton growing season.