A5048462622- Weed Control and Herbicide Applications
- Agronomic Practices and Intercropping Systems
- Peanut Plant Research Studies
- Pesticide and Herbicide Environmental Studies
- Plant Disease Management Techniques
- Nitrogen and Sulfur Effects on Brassica
- Plant and fungal interactions
- Soybean genetics and cultivation
- Crop Yield and Soil Fertility
- Legume Nitrogen Fixing Symbiosis
- Composting and Vermicomposting Techniques
- Agricultural pest management studies
- Plant tissue culture and regeneration
- Soil Carbon and Nitrogen Dynamics
- Nematode management and characterization studies
- Flowering Plant Growth and Cultivation
- Research in Cotton Cultivation
- Allelopathy and phytotoxic interactions
- Cassava research and cyanide
- Bioenergy crop production and management
- Agricultural Research and Practices
- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- Agriculture, Soil, Plant Science
- Plant Physiology and Cultivation Studies
Southwest Florida Research
2019-2024
University of Florida
2017-2024
Institute of Agriculture and Animal Science
2020
State Street (United States)
2015-2016
University of Arkansas at Fayetteville
2013-2015
Brassica carinata is a non-food industrial oilseed crop that can be grown in the winter southeast US without impacting food, feed, or fiber crops. Carinata low carbon advanced renewable fuel feedstock and good source of animal protein. research SE through public-private partnership has developed comprehensive body knowledge regarding agronomics, life cycle analysis, best management practices economics. This article aims to help growers others interested understand its biology, agronomy,...
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...
Since there are different ways to report moisture (as a decimal or as percentage), and because the calculation seems intuitive, is some confusion among agricultural professionals about how adjust yield standardized content. This 4-page publication aims clarify concept themath. Written by Michael J. Mulvaney Pratap Devkota, published UF/IFAS Agronomy Department, May 2020.
Abstract Brassica carinata , a nonfood oilseed crop, is used to produce renewable fuels because of its high oil content and favorable fatty acid profile. Production in the southeastern United States relatively new, information on agronomic management practices optimize growth yield limited. Since optimal seeding rate may depend land preparation method for this small‐seeded study was conducted evaluate effect tillage system (conventional, no‐till, broadcast‐disc, ripper‐roller) (1.12, 5.60,...
Carrier water quality is an important consideration for herbicide efficacy. Effect of carrier pH (4, 6.5, or 9) and coapplied Zn Mn foliar fertilizer was evaluated on glufosinate efficacy horseweed Palmer amaranth control in the field. Greenhouse studies were conducted to evaluate effect of: (1) pH, (Zn, Mn, without fertilizer), ammonium sulfate (AMS) (at 0 2.5% v/v); (2) hardness (0 1,000 mg L −1 ) AMS v/v) giant ragweed, horseweed, control. In a 2014 field study, control, plant density...
Successful weed control in peanuts involves use of good management practices all phases peanut production. This 11-page document lists herbicide products registered for Florida production, their mode actions group, application rate per acre and season, reentry interval. It also discusses the performance these herbicides on several weeds under conditions. Written by J. A. Ferrell, G. E. MacDonald, P. Devkota, published UF/IFAS Agronomy Department, revised May 2020.
Due to the increased adoption of dicamba-tolerant cotton (Gossypium hirsutum L.) and soybean [Glycine max (L.) Merr.], near-by sensitive broadleaf crops such as peanut (Arachis hypogaea are at an risk for off-target movement events. Limited data on response multiple exposure events reduced rates glyphosate plus dicamba available. Therefore, objective this study was determine impact low yield grade across locations in southeast southwest production regions U.S. In 2019/2020, field trials were...
Abstract Palmer amaranth ( Amaranthus palmeri S. Watson) is a problematic weed encountered in U.S. cotton Gossypium hirsutum L.) and soybean [ Glycine max (L.) Merr.] production, with infestations spreading northward. This research investigated the influence of planting date (early, mid-, late season) population (AR, IN, MO, MS, NE, TN) on A. growth reproduction at two locations. All populations planted early or midseason Throckmorton Purdue Agricultural Center (TPAC) Arkansas Agriculture...
Abstract Brassica carinata A. Braun is a non‐edible, oilseed winter crop for biofuel production that can diversify rotations and improve integrated weed management. The research objective was to evaluate the influence of B. on population dynamics in southeastern United States cropping systems. grown after cotton ( Gossypium hirsutum L.), peanut Arachis hypogea or clean summer fallow, pressure modified with without S ‐metolachlor. emergence Lamium amplexicaule L. increased at least 40%...
Abstract We conducted an online survey of weed scientists in the United States and Canada to (1) identify research topics perceived be important for advancing science next 5 10 years (2) gain insight into potential gaps current expertise funding sources needed address those priorities. Respondents were asked prioritize nine broad areas, as well subcategories within each areas. received 475 responses, with majority affiliated academic institutions (55%) working cash crop (agronomic or...
Carrier water pH, hardness, coapplied foliar fertilizer, conditioning agents, and plant height are critical considerations for optimum herbicide performance. Field studies were conducted to evaluate the effect of carrier pH (4, 6.5, 9) zinc (Zn) or manganese (Mn) fertilizer on mesotrione horseweed Palmer amaranth control. Additionally, was evaluated 7.5-, 12.5-, 17.5-cm tall horseweed. Greenhouse treatments consisted (Zn, Mn, without fertilizer); hardness (0 1,000 mg L −1 ) in presence...
Abstract Off‐target drift of herbicides can seriously reduce peanut ( Arachis hypogea L.) growth and yield is great concern to growers who will need manage sensitive crops near new herbicide‐tolerant crops. Field experiments were conducted in 2021 2022 with 25% labeled rates dicamba, glufosinate, glyphosate, lactofen, paraquat simulate on peanut. The objective was evaluate the effects low‐rate application injury reductions determine if unmanned aerial vehicle (UAV) imagery‐based normalized...
Abstract Carrier water pH is an important factor for enhancing herbicide efficacy. Coapplying agrochemical products with the might save time and resources; however, negative effect of foliar fertilizers on efficacy should be thoroughly evaluated. In greenhouse studies, carrier (4, 6.5, 9), fertilizer (zinc [Zn], manganese [Mn], or without fertilizer), ammonium sulfate (AMS) at 0% 2.5% vol/vol was evaluated 2,4-D premixed plus glyphosate giant ragweed, horseweed, Palmer amaranth control....
This publication discusses several aspects of field corn production in Florida, such as economics, land preparation, hybrid selection, fertilization, irrigation, and disease management. Written by David Wright, Ian Small, Cheryl Mackowiak, Zane Grabau, Pratap Devkota, Silvana Paula-Moraes, published the UF/IFAS Agronomy Department, revised August 2022.
Row croppers in the Southeast United States (SE US) are interested diversifying their cropping systems and increasing revenue by growing a winter cash crop between summer crops, especially cotton (Gossypium hirsutum L.) peanut (Arachis hypogaea L.). Double-cropping carinata (Brassica A. Braun) crops has potential to boost grower increase land use efficiency region. Given that this is fairly new SE US, its successful establishment region depends on rotational fit into current systems. Since...
Abstract The commercialization of crops that are resistant to 2,4-D plus glyphosate provided an opportunity growers apply the herbicide postemergence. However, potential drift injury these herbicides peanuts grown near is concerning. Field experiments were conducted in 2019 and 2020 evaluate peanut response when exposed at 25, 50, 75 d after planting (DAP) corresponding vegetative, flowering, pod development stages, respectively, reduced rates 1/512×, 1/128×, 1/32×, 1/8× labeled rate (i.e.,...
Abstract The widespread adoption of dicamba‐resistant crops has increased the applications newer dicamba formulations for weed control. However, there is a concern potential off‐target injury and yield reduction to peanuts ( Arachis hypogea L.) planted in close proximity crops. Field experiments were conducted summer 2019 2020 evaluate peanut response reduced rates (1/512X, 1/128X, 1/32X, 1/8X label rate, 564 + 1280 g ae ha −1 ) plus glyphosate (XtendiMax Roundup PowerMax) at 25, 50, 75 days...
Water is the primary carrier for herbicide application, and carrier-water–related factors can influence performance. In a greenhouse study, premixed formulation of glyphosate plus dicamba was mixed in deionized (DI) water at 5, 18, 31, 44, or 57 C applied immediately. companion DI temperatures 22, 39, 56 sprayed after solution left respective 0, 6, 24 h. both studies, 0.275 0.137 kg ae ha −1 (low rate), 0.55 (high respectively, to giant ragweed, horseweed, Palmer amaranth, pitted...
This 4-page document provides an overview of smutgrass biology, control, and general recommendations. Written by Brent Sellers, Neha Rana, José Luiz C. S. Dias, Pratap Devkota, published the UF/IFAS Agronomy Department, revised October 2020. Original publication date February 2000 (Sellers, Ferrell, Mullahey). Revised November 2009, January 2015. 2018 Devkota), 2020 (this version) Previous versions: Brent, Jason John Mullahey. 2009. “Smutgrass Control in Perennial Grass Pastures”. EDIS 2009...
Substrate stratification is a new research area in which multiple substrates, or the same substrate with differing physical properties, are layered within container to accomplish production goal, such as decreasing water use, nutrient leaching, potentially reducing weed growth. Previous using pine ( Pinus sp.) bark screened ≤1/2 3/4 inch reduced growth of bittercress Cardamine flexuosa ) by 80% 97%, whereas liverwort Marchantia polymorpha coverage was 95% 99%. The objective this study...
The objective of this study was to assess the growth two woody ornamental plants when subjected different levels weed competition in four container sizes, representing stages production. Ligustrum (Ligustrum lucidum W.T.Aiton) and Japanese holly (Ilex crenata Thunb.) liners were potted individually into 3.8 L, 11.4 24.7 56.8 L containers, respectively. Weed coverage 0%, 50%, 100% each size maintained by surface sowing seeds six common nursery species volume, based on media area pot. Results...