Nitrogen is required in large amounts by the cotton plant. Most of this demand is supplied by supplemental nitrogen fertilizer applied to the soil either as a preplant, or split application. The best way to avoid deficiency problems is to follow local recommendations as to rates and amounts. However, unlike some other nutrients, nitrogen may be lost from the soil under certain conditions and requires good management.
Early and midseason nitrogen deficiency symptoms are a yellowish green leaf color, which will appear on the older leaves first, and reduced size of younger leaves. Nitrogen is mobile in the plant; therefore, the plant will transfer nitrogen from the older leaves to feed younger, developing leaves. Plant height will be reduced, fruiting branches are short, and boll shed is increased. Late season deficiency may be characterized, on plants with a moderate boll load, by foliar symptoms appearing as reddening in the middle of the canopy with few bolls retained at late fruiting sites. Nitrogen deficiency can actually delay flowering by an increase in the time to first bloom and by increasing the time interval between flowering on the same fruiting branch.
After nitrogen deficiency symptoms are detected the problem can be addressed by applying additional nitrogen as a soil application or foliar feed. Making mid and late season applications of nitrogen requires a thorough understanding of the cotton crop and the situation at hand. Before an application is made, or a sequence of applications are begun, be sure you have professional advice. Mistakes dealing with nitrogen can have serious consequences. Be sure the situation is evaluated properly and the proper course of action taken. A shortage of nitrogen can reduce yields. Excessive or improperly late-applied nitrogen can delay maturity, reduce micronaire, reduce yields and/or make the crop more attractive to insects. The best way to manage nitrogen is through a sound soil fertility program.
HAMILTON, Miss. -- Determining the extent of tornado damage to farms in Monroe County will take weeks, but video shot from flying drones will speed up the process.
Mississippi State University Extension Service personnel have been assisting in relief efforts since the morning after an EF-2 tornado on April 13 damaged more than 140 homes in Hamilton, claiming one life and injuring 19 others.
Near a bridge that connects Issaquena and Sharkey counties, Waye Windham leaned toward the side of his boat and dipped a paddle down into flood water to gauge its depth.
The water was too deep for the paddle to reach the ground. Riding with Windham was Lacey Little, who tried a much longer wooden post.
A Mississippi State cotton agronomist is the new head of the university's Department of Plant and Soil Sciences. Darrin Dodds, a 12-year veteran of the department, takes the helm April 1.
The 2018 Mississippi State University Row Crop Short Course will feature speakers from seven states covering topics ranging from nematode management in cotton and soybeans to the potential effects of new tariffs on the state's agricultural industry.
Most of Mississippi’s corn and rice crops had been harvested when prolonged, late-September rains soaked much of the state, but the wet weather could not have come at a worse time for soybeans and cotton.