Soybean dose-response to 2,4-D and dicamba at vegetative and reproductive growth stages.

Background: Field experiments were conducted across multiple sites in 2012 and 2013 to describe sensitivity of soybean to 2,4-D (six doses) and dicamba (seven doses) at V3 and R1 growth stages. Further experiments were conducted under greenhouse conditions in 2017 and 2018 to compare soybean response to several dicamba herbicides across a broader range of doses than those tested in the field.

Results: Soybean yield loss was 6.

Tarnished Plant Bug (Heteroptera: Miridae) Behavioral Responses to Chemical Insecticides.

The tarnished plant bug ( Palisot de Beauvois) is the dominant insect pest of cotton ( L.) in the Mid-South Cotton Belt. This is partly due to the fact that this pest has developed resistance to most insecticides used for control.

Influence of flooding period and seed burial depth on Palmer amaranth (Amaranthus palmeri) seed germination.

Background: Flooding throughout fall and winter months is an effective practice for rice (Oryza sativa L.) straw decomposition, soil seedbank depletion, and waterfowl habitat in Mississippi. Nevertheless, limited research is available regarding the effects of fall-winter flooding and seed burial depth on Palmer amaranth (Amaranthus palmeri S.

Quantifying the Impact of Excluding Insecticide Classes From Cotton Integrated Pest Management Programs in the U.S. Mid-South.

Current assessments from the U.S. Environmental Protection Agency suggest that some current insecticides may be lost or severely restricted in the near future.

Neonicotinoid Insecticide Resistance in Tobacco Thrips (Thysanoptera: Thripidae) of Mississippi.

Insecticidal efficacy of neonicotinoid insecticides used against tobacco thrips, Frankliniella fusca (Hinds) (Thysanoptera: Thripidae), in cotton, Gossypium hirisutum L. (Malvales: Malvaceae), was evaluated for field populations collected in Mississippi during 2014-2016. Resistance was documented in 16 and 57% of populations to imidacloprid and thiamethoxam, respectively.

Spray droplet size and carrier volume effect on dicamba and glufosinate efficacy.

Background: Pesticide applications using a specific droplet size and carrier volume could maximize herbicide efficacy while mitigating particle drift in a precise and efficient manner. The objectives of this study were to investigate the influence of spray droplet size and carrier volume on dicamba and glufosinate efficacy, and to determine the plausibility of droplet-size based site-specific weed management strategies.

Results: Generally, across herbicides and carrier volumes, as droplet size increased, weed control decreased.