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Disease Control

Cotton Leafroll Dwarf Virus Present In Alabama; Scouting Essential

cotton leaf roll virus

Extension professionals have already confirmed the presence of cotton leafroll dwarf virus (CLRDV)—the causal agent of cotton blue disease — on multiple research substations across Alabama. The aphid-transmitted disease has been monitored closely since it appeared in cotton fields during fall 2017. Kassie Conner, an Alabama Extension plant pathologist, said the virus was confirmed in samples taken since July 1. ... Read More »

Know Your Fungicide Options And When To Use Them

target spot in cotton

• By Heather Marie Kelly • Cotton is blooming in Tennessee, and I’ve gotten some calls asking about fungicides – there are options but none is warranted at this time. As the rain, heat and humidity continue, we may start to see target spot develop, which could justify a fungicide application. Only since 2013, when target spot in cotton was ... Read More »

UGA Cotton Team Studying Potentially Damaging Disease

cotton blue disease

Scientists from the University of Georgia College of Agricultural and Environmental Scientists are investigating the epidemiology of cotton leaf roll dwarf virus (CLRDV) in Georgia using a $75,000 grant jointly funded by the Georgia Cotton Commission and Cotton Incorporated. CLRDV is known to cause cotton blue disease, which can reduce yields up to 80% in cotton fields infected in early ... Read More »

Know How To ID Early Season Stand Loss And Cotton Diseases

stand loss from reniform nematode

• By Thomas Isakeit • Early season stand loss of cotton could be the result of fungal pathogens or, in the case of some fields in the Upper Coast counties (e.g. Wharton and Fort Bend), high populations of reniform nematodes. Seedling death from fungi can vary from season to season and severe impacts are usually associated with cool, wet conditions ... Read More »

Dry Spring Causes Cotton Management Challenges

alabama cotton planting

Rain in the forecast is a welcome change from the lingering dry conditions Alabama producers have battled this spring. Producers generally plant cotton between April 20 and the first week of June. Although early spring weather was conducive for planting, the end of May was hot and dry, creating significant challenges for stand establishment. Alabama Extension cotton specialist Dr. Steve ... Read More »

California Fights To Beat Fusarium Wilt Race 4

fusarium wilt race 4

An increasing topic of conversation between researchers and producers at area meetings across the Cotton Belt is Fusarium wilt race 4 (FOV4) — a fungal disease that is difficult to control in cotton and can survive in soils indefinitely. With vital support from Cotton Incorporated, scientists in California have been investigating resistance to FOV4 since 2003 when the disease was ... Read More »

Teamwork Is Key To Success

carroll smith

While interviewing University of Georgia cotton specialist Dr. Jared Whitaker about cotton blue disease, he wrapped up by saying, “The more people we have working on this issue, the quicker we can figure it out.” It occurred to me that this thought is a great endorsement for teamwork. And if you want to see teamwork in action, read the cover ... Read More »