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Soybean

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Survey And Prevalence Of Palmer Amaranth Herbicide Resistance In South Carolina, Mitchell Williams Aug 2023

Survey And Prevalence Of Palmer Amaranth Herbicide Resistance In South Carolina, Mitchell Williams

All Theses

Palmer amaranth is a troublesome weed for growers to control, not only due to its aggressive growth characteristics that limit row-crop production, but because of its resistance to different herbicide modes of action. The first case of herbicide resistance in Palmer amaranth was detected in 1989 and has since grown to nine different herbicide classes throughout the United States. New herbicide modes of action have not been developed since the 1980s, so proper stewardship of the remaining modes of action is important for effective control of Palmer amaranth. Increased herbicide resistance from states bordering South Carolina have been reported; therefore, …


Precision Management Of Inputs In Cotton And Soybean Production In South Carolina, Kyle Smith May 2023

Precision Management Of Inputs In Cotton And Soybean Production In South Carolina, Kyle Smith

All Theses

The adoption of precision agriculture technologies and developing specific product use recommendations in cotton and soybean production could help farmers reduce input costs and optimize overall farm profitability. The objectives of this research were to evaluate whether or not the use of variable rate seeding in cotton could increase profitability and to determine the rainfast interval of commonly used insecticides in cotton and soybean production. The first trial, variable rate seeding in cotton, was implemented at the Edisto Research and Education Center near Blackville, SC across five years to evaluate variable rate seeding in cotton. Results from trials in South …


Comparative Lipidomic Analysis Reveals Heat Stress Responses Of Two Soybean Genotypes Differing In Temperature Sensitivity, Sruthi Narayanan, Zolian S. Zoong Lwe, Nitant Gandhi, Ruth Welti, Benjamin Fallen, James R. Smith, Sachin Rustgi Apr 2020

Comparative Lipidomic Analysis Reveals Heat Stress Responses Of Two Soybean Genotypes Differing In Temperature Sensitivity, Sruthi Narayanan, Zolian S. Zoong Lwe, Nitant Gandhi, Ruth Welti, Benjamin Fallen, James R. Smith, Sachin Rustgi

Publications

Heat-induced changes in lipidome and their influence on stress adaptation are not well-defined in plants. We investigated if lipid metabolic changes contribute to differences in heat stress responses in a heat-tolerant soybean genotype DS25-1 and a heat-susceptible soybean genotype DT97-4290. Both genotypes were grown at optimal temperatures (OT; 30/20 °C) for 15 days. Subsequently, half of the plants were exposed to heat stress (38/28 °C) for 11 days, and the rest were kept at OT. Leaf samples were collected for lipid and RNA extractions on the 9th and 11th days of stress, respectively. We observed a decline in …