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- Cover crop (3)
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- Annual/Perennial; Determinate growth habit; Gene expression; Breeding lines; Floral clustering; Regrowth; eQTL; VIGS (1)
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Articles 1 - 10 of 10
Full-Text Articles in Plant Sciences
Breeding Cotton For Determinate Growth Habit: Increasing Cotton Fiber Yield By Remobilization Of End-Of-Season Perennial Reserves, Salman Naveed
Breeding Cotton For Determinate Growth Habit: Increasing Cotton Fiber Yield By Remobilization Of End-Of-Season Perennial Reserves, Salman Naveed
All Dissertations
Cotton (Gossypium spp.) is a major export commodity for the U.S. Despite advances in plant breeding and management practices, the cotton yield gains in the U.S. have stagnated. Therefore, to increase cotton fiber yield, we undertook a novel approach by altering the growth habit of cotton from perennial to annual. In this effort, eight genotypes showing strong expression alleles for five floral induction and meristem identity genes were selected from 44 Upland cotton mini-core collection genotypes and genetically crossed in various combinations to stack the strong expression alleles in a genotype. These efforts have allowed us to develop high-yielding, …
Influence Of Cover Cropping And Nitrogen Fertilization On Soil Properties And Cotton Productivity, Christianah Oladoye
Influence Of Cover Cropping And Nitrogen Fertilization On Soil Properties And Cotton Productivity, Christianah Oladoye
All Dissertations
Conservation practices with cover crops have proven to be effective in nutrient enrichment, increased yield, and environmental stability. Field studies were conducted from 2019 to 2022 to evaluate the short-term effect of No cover crop [NC], RYE, a mix of rye + vetch [R+V], and mix of five species (radish, rye, vetch, clover, and lupin) [5W] on short term soil physical, chemical properties, cotton growth, and lint yield. Cover crops were planted in November and terminated in May of each year. Soil dry and wet aggregate fractions (0-0.05 m) and soil compaction (0-0.4 m depth) were measured at termination. The …
Cover Cropping To Improve The Sustainability Of Agronomic Production Systems, Ricardo St Aime
Cover Cropping To Improve The Sustainability Of Agronomic Production Systems, Ricardo St Aime
All Dissertations
The adoption rate of cover cropping among farmers in the Southeast is low due to the lack of knowledge regarding the suitable cover crop species and their management practices and the concerns of resource depletion for the subsequent cash crop. To generate information addressing the above knowledge gap, the present research was conducted with the following objectives: (1) to determine the optimal planting method for winter cover crops in the upstate of SC and whether it is influenced by the seeding rates (Project-1); (2) to determine suitable winter cover crops for the region based on biomass production, water use efficiency …
Recapture And Reuse Of Nitrogen And Phosphorus From Rendered Animal Materials To Enhance Nutrient Use Efficiency And Produce Quality In Agricultural Crop, Bhupinder Jatana
Recapture And Reuse Of Nitrogen And Phosphorus From Rendered Animal Materials To Enhance Nutrient Use Efficiency And Produce Quality In Agricultural Crop, Bhupinder Jatana
All Dissertations
The current fertilizer regime heavily relies on inorganic fertilizers to meet the crop nitrogen (N) and phosphorus (P) demand. However, the United States has a limited N production capacity, with 50% N demand met through imports. On the other hand, the nonrenewable natural reserves of P are being depleted at an unprecedented rate and are expected to be exhausted with in next 100 years. Additionally, high solubility/liability of the field applied inorganic fertilizers often results in lower nutrient use efficiency (NUE;
The MBM led to rapid N mineralization, with 35% of the applied N mineralized within the first five days …
Effects Of Varying Spring Hollow Tine Aerification Size And Timing On Bentgrass Greens, Lewis Hubbard Jr
Effects Of Varying Spring Hollow Tine Aerification Size And Timing On Bentgrass Greens, Lewis Hubbard Jr
All Dissertations
The desire to maintain optimal turfgrass and surface properties often leads turfgrass managers to minimize impact from cultural practices like hollow tine aerification (HTA). Comprehensive research is essential to developing aerification programs which allow optimal use of turfgrass surfaces without sacrificing overall turf health.
A two-year field experiment was conducted on a 14-year-old U.S. Golf Association (USGA)-specified Crenshaw creeping bentgrass [Agrostis stolonifera L. var palustris (Huds.)] research putting green in Clemson, SC, to evaluate the effects of varying spring HTA size and timing on turfgrass, surface, organic matter (OM), and soil properties.
Spring HTA treatments included 1.2-cm i.d. tines spaced …
Biology And Ecology Of Wild Radish (Raphanus Raphanistrum), Mayank Malik
Biology And Ecology Of Wild Radish (Raphanus Raphanistrum), Mayank Malik
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Wild radish ( L.), a facultative winter annual is a troublesome weed in small grain crops of the Southeastern United States. Besides being a weed, it may also be used as a cover crop for weed management due to its production of glucosinolates. Studies were conducted to evaluate the biology and ecology of wild radish as well as its glucosinolate production and its weed management possibilities.
Wild radish emerging in fall months formed a rosette of leaves which aided its winter survival. Plants emerging from December through March that did not form a rosette had minimal survival. Wild radish life …
Biology And Ecology Of Palmer Amaranth (Amaranthus Palmeri), Prashant Jha
Biology And Ecology Of Palmer Amaranth (Amaranthus Palmeri), Prashant Jha
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Palmer amaranth (Amaranthus palmeri S. Wats.) is a troublesome weed of crops in southeastern United States. This research highlights studies on the biology and ecology of Palmer amaranth. Following dispersal in fall, Palmer amaranth seeds require high mean temperatures of 25 to 40 C for germination, which is not likely to occur in South Carolina until the following spring. With dormancy reduction over winter, seeds can germinate at high temperatures (≥25 C) and thermal amplitudes of 15 C during late spring (May) in the presence of light. A majority (>90%) of the non-dormant population in the soil seedbank emerge …
Variable Approaches Investigating Light Quality And Quantity Impacts On Warm- And Cool-Season Turfgrasses, Christian Baldwin
Variable Approaches Investigating Light Quality And Quantity Impacts On Warm- And Cool-Season Turfgrasses, Christian Baldwin
All Dissertations
Bermudagrass (Cynodon ssp.) is the most popular warm-season turfgrass used in warm climatic regions of the world due its recuperative ability, high traffic tolerance, heat tolerance, and relative drought and salt tolerance. However, shade is a microenvironment in which bermudagrass performs poorly. Morphological limitations, such as reduced lateral stem growth and overall reduction of carbohydrate synthesis contribute to bermudagrass, a C4 plant, decline under shade. Therefore, primary objectives of this dissertation were to determine the genetic diversity of bermudagrasses grown in full-sunlight and shade, impacts of shade and cultural practices on bermudagrass spring transition, management recommendations to enhance bermudagrass …
The Molecular Characterization Of The Virus And Virus-Like Agents Present In Ta Tao 5 Germplasm Of Prunus Persica , Diana Marini
The Molecular Characterization Of The Virus And Virus-Like Agents Present In Ta Tao 5 Germplasm Of Prunus Persica , Diana Marini
All Dissertations
Peach production in the southeastern United States is limited by late spring freezes. Ta Tao 5 germplasm, used either as an interstem or by chip bud inoculation, has been shown to delay bloom and avoid the effects of these late freezes. The growth modification is graft transmissible and the germplasm has been found to be infected with ACLSV, APruV-3, and PLMVd. Using a combination of PCR, cloning, and sequencing techniques, a molecular characterization of the three graft-transmissible agents present in Ta Tao 5 has been completed.
The complete nucleotide sequence of the genome of the isolate of ACLSV (ACLSV-Ta Tao …
The Influence Of Peat And Inorganic Amendments On Physical Properties Of Sand-Based Rootzones, Freddie C. Waltz Jr.
The Influence Of Peat And Inorganic Amendments On Physical Properties Of Sand-Based Rootzones, Freddie C. Waltz Jr.
All Dissertations
Many golf course putting greens and athletic fields are constructed with a medium consisting of a high sand content. Peat is the most common amendment to rootzone sand (RZS). However, a trend to replace peat with inorganic soil amendments (IOSA), such as calcined clay (CC) and diatomaceous earth (DE), is occurring. Laboratory studies were conducted to evaluate physical and hydraulic properties of rootzone mixtures and a field study investigated the potential of IOSA as a replacement to peat. In laboratory evaluations, amended RZS reduced the bulk density of all mixtures, while saturated hydraulic conductivity (Ksat) for the RZS and mixtures …