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- Palmer amaranth (1)
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Articles 1 - 12 of 12
Full-Text Articles in Plant Sciences
Yield And Nutritive Quality Of Fresh And Ensiled Reduced Lignin Alfalfa In Monoculture And Diculture With Novel Tall Fescue, Morgan Boss
All Theses
The objectives of this research were to: (1) evaluate the yield, nutritional value, and digestibility of fresh and ensiled reduced lignin alfalfa (RLA; Medicago sativa L.) in monoculture and when mixed with novel endophyte-infected tall fescue (F; Festuca arundinacea) in comparison to a conventional alfalfa (CA) cultivar; and (2) evaluate ensiled samples under varying DM concentrations; with or without inoculant. A trial was prepared as a randomized complete block design with 4 replicates per treatment. Treatments included reduced lignin alfalfa (RLA), conventional alfalfa (CA) and tall fescue (F) plots as well as RLA/F and CA/F plots. Plots were harvested on …
Survey And Prevalence Of Palmer Amaranth Herbicide Resistance In South Carolina, Mitchell Williams
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, …
Heat Stress-Induced Lipid Alterations In Peanut, Walker Spivey
Heat Stress-Induced Lipid Alterations In Peanut, Walker Spivey
All Theses
Peanut (Arachis hypogaea) is a globally important crop cultivated for human consumption and for the production of seed oil. As anthropogenic climate change continues to challenge global crop production with extreme environmental conditions such as high temperatures, the development of heat-tolerant varieties is crucial to meet peanut production demands. At the cellular level, one of the fundamental causes of yield loss at high temperatures (HT) is membrane damage. This work reports the investigations on a subset of a peanut recombinant inbred line population demonstrating that the membrane lipid remodeling occurring at HT is consistent with homeoviscous adaptation to …
Evaluating The Effect Of Biochar Soil Amendments On Belonolaimus Longicaudatus Populations Damaging Bermudagrass In South Carolina, Malone Thomason
Evaluating The Effect Of Biochar Soil Amendments On Belonolaimus Longicaudatus Populations Damaging Bermudagrass In South Carolina, Malone Thomason
All Theses
Belonolaimus longicaudatus Rau, (1958) (sting nematode) is a prevalent plant-parasitic nematode found in association with Cynodon spp. (bermudagrass) in South Carolina (Ye et al., 2012). Due to the persistence of the pest, long-term management strategies are necessary. Applications of biochar and compost amendments have reduced nematodes in various crop systems, but research on turfgrass systems is limited. The objectives of the studies were to determine: (1) The effect of topdressing or soil incorporated biochar amendments on sting nematode populations, and (2) The effect of topdressing or soil incorporated amendments on turf quality. A field study was established to examine topdressings …
Influence Of Potassium Fertilizer Application Timing On Cotton Production As Related To Soil Potassium On U.S. Coastal Plain Soils, Shruthy Suresh Kumar
Influence Of Potassium Fertilizer Application Timing On Cotton Production As Related To Soil Potassium On U.S. Coastal Plain Soils, Shruthy Suresh Kumar
All Theses
Understanding soil K dynamics is highly significant in cotton production owing to its prominent role in cotton fiber quality. About 31 % of cotton production in the U.S. is concentrated in SE states, with coastal plain soils having low innate K availability. Crop fertilizer-K recommendations are primarily made worldwide and across the U.S. using pre-plant STK concentrations. A literature review on cotton K studies suggests that fertilizer-K recommendations based on pre-plant STK concentrations alone need fine-tuning to meet the increasing K demands in modern cultivars, variations in crop K requirement patterns, and varied soil K supplying capacity. Studies have been …
Precision Management Of Inputs In Cotton And Soybean Production In South Carolina, Kyle Smith
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 …
Winter Cover Crop Performance In The Southern Piedmont Region Of South Carolina, Payton Davis
Winter Cover Crop Performance In The Southern Piedmont Region Of South Carolina, Payton Davis
All Theses
Cover crops (CC) offer in-field and environmental benefits when integrated into cropping systems. Low CC adoption in the southern Piedmont of South Carolina is partially due to the lack of information on CC performance and benefits within the region. To address this, eight winter CC and a fallow/pigweed treatment were investigated for their influence on soil temperature, volumetric water content (VWC), percent cover, biomass, and the occurrence of soil water repellency (SWR). A randomized complete block design experiment was conducted in the fall and winter of 2021-2022 (EXP A) and repeated in 2022-2023 (EXP B). Cover crops minimally influenced soil …
Fungicide Resistance In Botrytis Cinerea From Strawberry - Molecular Mechanisms And Management, Anja Grabke
Fungicide Resistance In Botrytis Cinerea From Strawberry - Molecular Mechanisms And Management, Anja Grabke
All Theses
The United States is the largest producer of strawberries worldwide, generating approximately $2.4 billion worth of fruit each year. Strawberry production, however, is often threatened by pathogens. One of the most destructive fungal pathogens is Botrytis cinerea, the causal agent of gray mold disease. The control of gray mold in commercial fields is largely dependent on the application of fungicides, including the dicarboximide iprodione and the hydroxyanilide fenhexamid. Because both fungicides are prone to resistance development, a survey was conducted to determine the occurrence and prevalence of fungicide resistance. Single-spore isolates were collected from strawberry fields in Florida (for …
Glufosinate Tolerance Of Widestrike And Liberty-Link Cotton Varieties And The Recoverability Of Upland Cotton Following Terminal Removal, Jason Sweeney
All Theses
Sweeney, Jason Allen. Glufosinate Tolerance of WideStrike¨ and LibertyLink¨ Cotton Varieties and the Recoverability of Cotton Following Terminal Removal. (Under the direction of Dr. Michael A. Jones).
To evaluate the effects of topical application of glufosinate (Liberty 280SL, 24.5% glufosinate-ammonium salt) on cotton varieties with WideStrike¨ and LibertyLink¨ technologies, two field experiments were conducted in 2011 and 2012 at the Pee Dee Research and Education Center (PDREC) in Florence, SC. In the first experiment, five WideStrike¨ cotton varieties (Phytogen [PHY] 367WRF, PHY 375WRF, PHY 440W, PHY 499WRF, and PHY 565WRF) and three LibertyLink¨ cotton varieties (FiberMax [FM] 1773LLB2, FM 1845LLB2, …
Forage Species Alters Animal Performance, Carcass Quality, And Fatty Acid Composition Of Forage-Finished Beef Produced In Summer Months, Jason Schmidt
Forage Species Alters Animal Performance, Carcass Quality, And Fatty Acid Composition Of Forage-Finished Beef Produced In Summer Months, Jason Schmidt
All Theses
The objective of this study was to evaluate how forages grazed during the summer months alter live animal performance, carcass quality, consumer acceptability and fatty acid composition in finishing beef cattle. Angus-cross steers (n=60) were finished on alfalfa (AL), bermudagrass (BG), chicory (CH), cowpea (CO), and pearl millet (PM) during this two year trial. Using a complete randomized block design, ten 2-ha paddocks were blocked and assigned to forage species (2 reps per species). Each year, steers (n=3) were randomly assigned to paddocks and grazing began when adequate forage growth for individual species was present. Put and take grazing techniques …
Measuring And Modeling Species Specific, Joseph Bowden
Measuring And Modeling Species Specific, Joseph Bowden
All Theses
Differences in transpiration have been reported in tree species over the last several decades; however, few studies have teased out the environmental component with a common garden. Species specific transpiration was measured via sap flow on twenty trees from five deciduous hardwood species, Prunus x yedoensis Matsum., Acer rubrum L. 'Autumn Flame', Acer buergeranum Miq., Prunus serrulata Lindl. 'Kwanzan,' and Platanus x acerifolia (Ait.) Willd., throughout the 2005 growing season in a plantation. In addition, monthly growth and gas exchange measurements were collected for each species and used to parameterize a three dimensional spatially explicit transpiration model, MAESTRA. The model …
Soil Fertility Management In Organic Vegetable Production, Susannah Rauton
Soil Fertility Management In Organic Vegetable Production, Susannah Rauton
All Theses
Organic vegetable production is a rapidly growing sector of agriculture. Due to limitations on synthetic inputs imposed by the USDA National Organic Program (NOP), research is necessary to determine which soil amendments are viable options for organic farmers. Field trials were conducted at the Clemson University Calhoun Fields Laboratory Student Organic Farm. A variety of vegetable crops were grown, including Jericho lettuce in the springs of 2005 and 2006, yellow crookneck squash in the summers of 2005 and 2006, and Early Jersey Wakefield cabbage in the fall of 2005. Soil amendment treatments consisted of combinations of the following: poultry compost, …