You are here

Boron Deficiency

Boron deficiency is perhaps wrongly accused of more problems than any other nutrient. Boron is very water soluble and deficiency is related to soil type, soil resource regions, organic matter content and timing of lime materials (pH). Symptoms are generally distinct, and descriptions of this disorder are quite similar across a larger range of environments. Petioles of younger leaves will be short and thick, with dark concentric bands along their length. It appears that the gossypol glands line up and arrange themselves in a "coon tail" arrangement. Flowers may also be distorted in shape. With severe boron deficiency, the terminal may be aborted or become deformed. The pith inside petioles of leaves or bolls may turn brown. Boron is required for normal flower development. Flower and boll shedding may increase as the level of deficiency increases.

Local University and Extension recommendations for boron applications should be followed closely. Some states recommend larger quantities of boron than others. In Misssissippi boron is recommended on hill area soils, recently limed soils and low organic matter sandy soils of the Delta. Generally the Delta region does not respond to boron. Sometimes irrigation water will contain sufficient levels of boron. Not all square, flower or boll shedding is due to boron deficiency problems. Follow your local recommendations with this micronutrient.

Print Friendly, PDF & Email

Publications

News

Man wearing a reflective safety vest looks at a white drone he is holding at shoulder height. A toppled pine tree and empty agricultural field are in the background.
Filed Under: Crops, Corn, Cotton, Soybeans, Farming, Disaster Response April 18, 2019

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.

A man in work clothes, baseball cap and wading boots stands in water outside his boat holding a paddle.
Filed Under: Agriculture, Crops, Corn, Cotton, Soybeans, Farming, Community, Disaster Response April 11, 2019

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.

Filed Under: Cotton March 21, 2019

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.

Filed Under: Crops, Corn, Cotton, Grains, Rice, Soybeans, Farming October 29, 2018

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.

Cotton with sprouting plants lies on muddy ground.
Filed Under: Agriculture, Crops, Corn, Cotton, Grains, Soybeans October 5, 2018

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.

Watch

Farmweek, Entire Show, October 9, 2015
Farmweek

Season 39 Show #14

Thursday, October 8, 2015 - 7:00pm
Farmweek Entire Show,  September 4, 2015
Farmweek

Season 39 Show #09

Thursday, September 3, 2015 - 7:00pm

Contact Your County Office

Your Extension Experts

Professor and Head
Cotton Agronomics