A5078804276- Weed Control and Herbicide Applications
- Allelopathy and phytotoxic interactions
- Soybean genetics and cultivation
- Agronomic Practices and Intercropping Systems
- Plant Parasitism and Resistance
- Pesticide and Herbicide Environmental Studies
- Plant tissue culture and regeneration
- Legume Nitrogen Fixing Symbiosis
- Plant Disease Management Techniques
- Berry genetics and cultivation research
- Agriculture, Plant Science, Crop Management
- Biological Control of Invasive Species
- Bioenergy crop production and management
- Growth and nutrition in plants
- Nematode management and characterization studies
- Horticultural and Viticultural Research
- Potato Plant Research
- Turfgrass Adaptation and Management
- Pasture and Agricultural Systems
- Soil Carbon and Nitrogen Dynamics
- Agricultural Science and Fertilization
Virginia Tech
2018-2024
North Carolina State University
2017-2018
Abstract Winter cover crop performance metrics (i.e., vegetative biomass quantity and quality) affect ecosystem services provisions, but they vary widely due to differences in agronomic practices, soil properties, climate. Cereal rye (S ecale cereale ) is the most common winter United States its hardiness, low seed cost, high production. We compiled data on cereal metrics, properties across eastern half of States. The dataset includes a total 5,695 observations 208 site-years between...
Abstract Potential effectiveness of harvest weed seed control (HWSC) systems depends upon shatter the target species at crop maturity, enabling its collection and processing harvest. However, retention likely is influenced by agroecological environmental factors. In 2016 2017, we assessed seed-shatter phenology in 13 economically important broadleaf soybean [ Glycine max (L.) Merr.] from physiological maturity to 4 wk after multiple sites spread across 14 states southern, northern,...
Abstract Residual herbicides applied to summer cash crops have the potential injure subsequent winter annual cover crops, yet little information is available guide growers’ choices. Field studies were conducted in 2016 and 2017 Blacksburg Suffolk, Virginia, determine carryover of 30 commonly used corn, soybean, or cotton on wheat, barley, cereal rye, oats, ryegrass, forage radish, Austrian pea, crimson clover, hairy vetch, rapeseed crops. Herbicides bare ground either 14 wk before crop...
Abstract Seed shatter is an important weediness trait on which the efficacy of harvest weed seed control (HWSC) depends. The level in a species likely influenced by agroecological and environmental factors. In 2016 2017, we assessed eight economically grass soybean [ Glycine max (L.) Merr.] from crop physiological maturity to 4 wk after at multiple sites spread across 11 states southern, northern, mid-Atlantic United States. From maturity, cumulative percent was lowest southern U.S. regions...
Abstract Herbicide resistance is a major problem in United States and global agriculture, driving farmers to consider other methods of weed control. One these harvest seed control (HWSC), which has been demonstrated be effective Australia. HWSC studies were conducted across Virginia 2017 2018, targeting Italian ryegrass continuous winter wheat as well common ragweed Palmer amaranth soybean. These assessed the impact (via removal) on populations next year’s crop compared with conventional...
As resistance to herbicides limits growers' weed management options, integrated (IWM) systems that combine non-chemical tactics with are becoming critical. A 2 year study was conducted at three locations in VA, USA. The factorial evaluated: (1) soybean planting date (early or late planted) (2) without winter cover (cereal rye/wheat no cover), and (3) harvest seed control (HWSC). Prior the first year, resulted a 22% reduction common ragweed density compared cover. At lowest densities were...
Field studies were conducted to determine the influence of herbicides on development internal necrosis (IN) in sweetpotato storage roots. In a slip propagation study, herbicide treatments included PRE application (immediately after covering seed roots with soil) clomazone (0.42, 0.84 kg ai ha -1 ), flumioxazin (0.11, 0.21 fomesafen (0.28, 0.56 linuron (0.56, 1.12 S- metolachlor (0.8, 1.6 plus S -metolachlor (0.11 + 0.8 or and napropamide (1.12, 2.24 POST (2 4 wk prior cutting slips) ethephon...
Abstract Diphenyl ether herbicides are commonly applied POST in soybean to control weeds late the growing season that have not been controlled by other previous weed management tactics. These “rescue” applications can occur during reproductive growth. The effect of these on developing flowers and pods is known. Field research studies were conducted over 3 yr determine how respond fomesafen, acifluorfen, lactofen when at R1, R3, R5 growth stages. Flower pod counts nontreated check showed an...
Abstract Field studies were conducted in 2015 and 2016 North Carolina to determine the response of ‘Covington’ ‘Murasaki-29’ sweetpotato cultivars four rates linuron (420, 560, 840, 1,120 g ai ha –1 ) alone or with S -metolachlor (803 applied 7 14 d after transplanting (DAP). Injury (chlorosis/necrosis stunting) both was greater when as compared alone. Herbicide application at DAP caused injury than DAP. At 4 wk treatment (WAT), stunting Covington Murasaki-29 (hereafter Murasaki) from 420...
Abstract Studies were conducted to determine the tolerance of sweetpotato and Palmer amaranth control a premix flumioxazin pyroxasulfone pretransplant (PREtr) followed by (fb) irrigation. Greenhouse studies in factorial arrangement four herbicide rates (flumioxazin/pyroxasulfone PREtr at 105/133 57/72 g ai ha –1 , S -metolachlor 803 nontreated) three irrigation timings [2, 5, 14 d after transplanting (DAP)]. Field seven treatments 40/51, 57/72, 63/80, 107 fb 7 10 DAP, season-long weedy...
Abstract Seed retention, and ultimately seed shatter, are extremely important for the efficacy of harvest weed control (HWSC) likely influenced by various agroecological environmental factors. Field studies investigated seed-shattering phenology 22 species across three soybean [ Glycine max (L.) Merr.]-producing regions in United States. We further evaluated potential drivers shatter terms weather conditions, growing degree days, plant biomass. Based on results, conditions had no consistent...
Abstract Grape hyacinth is a perennial bulbous species in the Liliaceae. It commonly grown as an ornamental plant, but it can spread into agricultural fields and become weedy, potentially interfering with harvest fall-planted crops. There has been limited research on controlling grape cropping systems. Fall spring applied field-research studies were conducted to determine control herbicides labeled for use wheat or winter fallow before planting soybean. Among fall-applied herbicides,...