Mapping Variability Of Soybean Leaf Potassium Concentrations To Develop A Sampling Protocol,
2023
University of Arkansas, Fayetteville
Mapping Variability Of Soybean Leaf Potassium Concentrations To Develop A Sampling Protocol, Carrie C. Ortel, Trenton Roberts, Kyle A. Hoegenauer, Aurelie M. Poncet, Nathan A. Slaton, W. Jeremy Ross
Crop, Soil and Environmental Sciences Faculty Publications and Presentations
The spatial variability of soybean [Glycine max (L.) Merr.] leaf-K (potassium) concentrations must be considered when collecting samples to monitor crop K status. Five commercial soybean fields were sampled at a 0.4-ha grid resolution at two reproductive growth stages to quantify the trifoliolate tissue-K concentration. The objectives of this study were to identify the potential field variability of soybean leaf-K concentrations in typical Mid-south US soybean production fields, evaluate interpolation methods, and develop a sampling protocol for in-season soybean tissue monitoring. No consistent spatial dependencies were found in the leaf-K concentrations across the fields and sample times, indicating that …
Cover Crops Integration With Nitrogen Management For Dryland Cotton In Sandy Ultisols,
2023
Clemson University
Cover Crops Integration With Nitrogen Management For Dryland Cotton In Sandy Ultisols, Swabir Alhassan Musah
All Theses
One of the many benefits of cover crops (CCs) is nutrient provision, which can be optimized by synchronizing the nutrient release from residue decomposition with the demand for subsequent cash crops. This study is part of a multistate research (13 states) to measure cotton lint yield in response to cover cropping as a nutrient management strategy. This research-based information will help farmers optimize nitrogen (N) fertilization when integrating CCs into their production systems. A two-year field trial was conducted in 2021 and 2022 with four cover crop treatments (cereal rye, crimson clover, mixtures of cereal rye and crimson clover, and …
2020-2021 Field Seasons Of Maize Gxe Project Within The Genomes To Fields Initiative,
2023
University of Wisconsin-Madison
2020-2021 Field Seasons Of Maize Gxe Project Within The Genomes To Fields Initiative, Dayane Cristina Lima, Alejandro Castro Aviles, Ryan Timothy Alpers, Alden Perkins, Dylan L. Schoemaker, Martin Costa, Kathryn J. Michel, Shawn Kaeppler, David Ertl, Maria Cinta Romay, Joseph L. Gage, James Holland, Timothy Beissinger, Martin Bohn, Edward Buckler, Jode Edwards, Sherry Flint-Garcia, Michael A. Gore, Candice N. Hirsch, Joseph E. Knoll, John Mckay, Richard Minyo, Seth C. Murray, James Schnable, Rajandeep S. Sekhon, Maninder P. Singh, Erin E. Sparks, Peter Thomison, Addie Thompson, Mitchell Tuinstra, Jason Wallace, Jacob D. Washburn, Teclemariam Weldekidan, Wenwei Xu, Natalia De Leon
Department of Agronomy and Horticulture: Faculty Publications
Objectives: This release note describes the Maize GxE project datasets within the Genomes to Fields (G2F) Initiative. The Maize GxE project aims to understand genotype by environment (GxE) interactions and use the information collected to improve resource allocation efficiency and increase genotype predictability and stability, particularly in scenarios of variable environmental patterns. Hybrids and inbreds are evaluated across multiple environments and phenotypic, genotypic, environmental, and metadata information are made publicly available. Data description: The datasets include phenotypic data of the hybrids and inbreds evaluated in 30 locations across the US and one location in Germany in 2020 and 2021, soil …
Economic Analysis Of Sod-Seeded Summer Annuals For Forage And Grazing,
2023
University of Arkansas, Fayetteville
Economic Analysis Of Sod-Seeded Summer Annuals For Forage And Grazing, Ivanelle Meyer
Graduate Theses and Dissertations
Forage and pasture trials were conducted over the summers of 2021 and 2022 to assess how forage production and nutritive value of sorghum sudangrass, cowpea, and sorghum sudangrass-cowpea mixtures, sod-seeded to bermudagrass pasture would impact stocker cattle performance. The forage trials compared forage production and quality when poultry litter was surface or sub-surface applied biennially in comparison to a no poultry litter control. Poultry litter is a nutrient dense fertilizer utilized on pastures in the mid-southern United States to increase forage nutritive value and yield. Broadcasting poultry litter results in more nutrient losses due to runoff and nitrogen volatilization compared …
Waste To Value: Global Perspective On The Impact Of Entomocomposting On Environmental Health, Greenhouse Gas Mitigation And Soil Bioremediation,
2023
International Centre of Insect Physiology and Ecology Nairobi
Waste To Value: Global Perspective On The Impact Of Entomocomposting On Environmental Health, Greenhouse Gas Mitigation And Soil Bioremediation, Dennis Beesigamukama, Chrysantus M. Tanga, Subramanian Sevgan, Sunday Ekesi, Segenet Kelemu
All Peer-Reviewed Publications
The innovative use of insects to recycle low-value organic waste into value-added products such as food, feed and other products with a low ecological footprint has attracted rapid attention globally. The insect frass (a combination unconsumed substrate, faeces, and exuviae) contains substantial amounts of nutrients and beneficial microbes that could utilised as fertilizer. We analyse research trends and report on the production, nutrient quality, maturity and hygiene status of insect-composted organic fertilizer (ICOF) generated from different organic wastes, and their influence on soil fertility, pest and pathogen suppression, and crop productivity. Lastly, we discuss the impact of entomocomposting on greenhouse …
Effect Of Cultural Strategies And Application Technologies On Weed Control In Flooded And Furrow-Irrigated Rice,
2023
University of Arkansas, Fayetteville
Effect Of Cultural Strategies And Application Technologies On Weed Control In Flooded And Furrow-Irrigated Rice, Noah Hunter Reed
Graduate Theses and Dissertations
Weed control is a major problem that rice (Oryza sativa L.) producers face in the Mid-south every growing season. Restricted use of some rice herbicides has also highlighted the need for more research to be conducted on cultural weed control strategies and application technologies in rice. The aim of these studies was to evaluate rice weed control using various rice row widths, bed widths (irrigation-furrow spacing), rice cultivar selection, and nozzle type selection. Three field experiments were conducted in 2021 and 2022 across four sites at Lonoke, AR, Pine Tree, AR, Rohwer, AR, and Stoneville, MS. In experiment one, as …
Management Zone Delineation For Variable-Rate Seeding In Production Soybeans,
2023
University of Arkansas, Fayetteville
Management Zone Delineation For Variable-Rate Seeding In Production Soybeans, Ujjwal Sigdel
Graduate Theses and Dissertations
Soybean seeding rate (SR) is selected according to planting date, maturity group, soil properties, and yield goal. Even though one SR is applied in most fields, site-specific adjustments with variable-rate seeding (VRS) technology can help optimize production. The project goal was to determine if VRS could be beneficial to soybean producers in Arkansas. The project objectives were to i) assess planter performance and soybean yield response to five seeding rate treatments, ii) characterize the drivers of yield variability, and iii) create a-posteriori prescription maps for VRS. Five SR treatments (185,000, 247,000, 309,000, 370,000 and 432,000 seeds ha-1) were applied using …
Evaluation Of Oxyfluorfen For Use In Roxy Rice,
2023
University of Arkansas, Fayetteville
Evaluation Of Oxyfluorfen For Use In Roxy Rice, Casey Hunter Arnold
Graduate Theses and Dissertations
Mid-southern U.S. rice (Oryza sativa L.) producers are challenged every year to control problematic barnyardgrass [Echinochloa crus-galli (L.) Beauv.] and weedy rice (Oryza sativa L.) because they have evolved resistance to most labeled herbicides. Oxyfluorfen is a Herbicide Resistance Action Committee (HRAC)/Weed Science Society of America (WSSA) Group 14 herbicide that inhibits protoporphyrinogen oxidase within the plant. Currently, there are no HRAC/WSSA Group 14 herbicides labeled for barnyardgrass or weedy rice control in midsouthern rice production. Therefore, oxyfluorfen is being evaluated for barnyardgrass and weedy rice control. Plant breeders at the University of California – Davis were able to breed …
A Global Faostat Reference Database Of Cropland
Nutrient Budgets And Nutrient Use Efficiency (1961–2020):
Nitrogen, Phosphorus And Potassium,
2023
Wageningen University & Research
A Global Faostat Reference Database Of Cropland Nutrient Budgets And Nutrient Use Efficiency (1961–2020): Nitrogen, Phosphorus And Potassium, Cameron I. Ludemann, Nathan Wanner, Pauline Chivenge, Achim Dobermann, Rasmus Einarsson, Patricio Grassini, Armelle Gruere, Kevin Jackson, Luis Lassaletta, Federico Maggi, Griffiths Obli-Laryea, Martin K. Van Ittersum, Srishti Vishwakarma, Xin Zhang, Francesco N. Tubiello
Department of Agronomy and Horticulture: Faculty Publications
Nutrient budgets help to identify the excess or insufficient use of fertilizers and other nutrient sources in agriculture. They allow for the calculation of indicators, such as the nutrient balance (surplus if positive or deficit if negative) and nutrient use efficiency, that help to monitor agricultural productivity and sustainability across the world. We present a global database of country-level budget estimates for nitrogen (N), phosphorus (P) and potassium (K) on cropland. The database, disseminated in FAOSTAT, is meant to provide a global reference, synthesizing and continuously updating the state of the art on this topic. The database covers 205 countries …
Do Organic Farming Practices Improve Soil Physical
Properties?,
2023
University of Nebraska-Lincoln
Do Organic Farming Practices Improve Soil Physical Properties?, Humberto Blanco-Canqui, Sabrina J. Ruis, Charles A. Francis
Department of Agronomy and Horticulture: Faculty Publications
Organic farming (OF) is a reemerging system that could address food security and adverse environmental footprints of conventional farming (CF). However, how OF affects the soil physical environment, an essential pillar for soil ecosystem service delivery, is not well understood. This paper (1) reviews published global literature up to 13 July 2023 regarding the impacts of OF on soil physical properties compared with CF and (2) underlines research needs. Literature indicates OF improves some soil physical properties relative to CF although studies on some properties were few. Specifically, OF increased wet aggregate stability, saturated hydraulic conductivity, and plant available water …
Brachiaria Spp. (Syn. Urochloa Spp.) Cv. Mulato Ii (Convert Hd364) Mass Production Under Continuous Grazing In The Water/Dry Transition Period,
2023
Jatai Federal University, Brazil
Brachiaria Spp. (Syn. Urochloa Spp.) Cv. Mulato Ii (Convert Hd364) Mass Production Under Continuous Grazing In The Water/Dry Transition Period, A. L. A. Castro, A. C. Prado, M. C. Silva Júnior, M. S. Soares, M. V. Teixeira
IGC Proceedings (1977-2023)
In the transition period between the rainy and dry seasons there is decreased water, temperature and luminosity, reducing forage production and quality. Because of this variability in forage mass production, it is essential to quantify forage mass for use in planning and decision making about pastures management. The objective was to evaluate Brachiaria spp. (Syn. Urochloa spp.) cv. Mulato II (Convert HD364) growth, biomass production managed under continuous grazing with steers fed with protein supplement feed in-trough and on-ground during the seasonal transition period. The experiment was carried out in the Beef Cattle Sector of Jatai Federal University …
Production And Persistence Of Self-Regenerating Annual Clovers In The Pacific Northwest,
2023
USDA-NRCS
Production And Persistence Of Self-Regenerating Annual Clovers In The Pacific Northwest, Ian Silvernail, Serkan Ates
IGC Proceedings (1977-2023)
Self-regenerating annual legumes are commonly included in dryland pastures to increase the production of high-quality forages to meet the nutritional demands of growing and lactating animals. Balansa clover (Trifolium michelianum Savi), not as widely evaluated as subterranean clover (Trifolium subterraneum L.), has shown promise in Western Oregon. However, there is a paucity of information on the productivity and persistence of annual clover cultivars that have various flowering times. This study investigates the biomass production and persistence of early, mid and late flowering subterranean clover and balansa clover cultivars in Corvallis, Oregon. Averaged across the cultivars, the total annual …
Current Red Clover Breeding Research,
2023
USDA-ARS
Current Red Clover Breeding Research, Heathcliffe Riday
IGC Proceedings (1977-2023)
Red clover remains a globally important forage legume grown mostly in humid temperate climates on approximately 4 million ha. In the past 25 years global red clover seed production has stabilized around 10 million kg yr-1, although there is evidence that seed production is increasing globally at around 0.34 million kg yr-1 since the early 2000s. Globally many red clover programs exist targeting specific global regions with a focus on improving persistence, biomass yield, seed yield, and a few other minor traits. Breeding programs are increasing persistence by selecting for specific disease resistances, specific agricultural conditions such …
Managing Vegetation In Grassland Habitats To Enhance Livestock Or Wildlife Objectives,
2023
Corteva AgriScience
Managing Vegetation In Grassland Habitats To Enhance Livestock Or Wildlife Objectives, B. B. Sleugh, S. Flynn, W. Hatler, C. Hart, S. Ingram, Joao B. Cason, D. Ovalle
IGC Proceedings (1977-2023)
Sustainably stewarding grassland systems involves applying various practices to manipulate forage interactions with other plants, the environment, and grazing animals to meet resource manager objectives. These interactions can result in invasion or encroachment and increased abundance of weeds which hinder attainment of management objectives. Weeds influence the structure and function of pasture ecosystems whether forages are grown in improved pastures, rangeland, or grassland communities. They degrade pasture quality and reduce livestock performance by interfering with forage establishment, yield, and quality by competing for resources. Weeds reduce the feed value of forage, decrease pasture carrying capacity, and can be toxic or …
Forage Allowance And Daily Gain Relationships On Rye-Ryegrass Pastures At Different Stocking Rates With Continuous And Rotational Stocking,
2023
Texas A&M University
Forage Allowance And Daily Gain Relationships On Rye-Ryegrass Pastures At Different Stocking Rates With Continuous And Rotational Stocking, F. M. Rouquette Jr., K. D. Norman, C. R. Long, E. Van Santen
IGC Proceedings (1977-2023)
‘Maton’ cereal rye (Secale cereale L.) and ‘TAM-90’ annual ryegrass (Lolium multiflorum Lam.) are used for winter annual pastures to background stocker cattle in the southeastern US. Rye and ryegrass were sod-seeded into bermudagrass [Cynodon dactylon (L.) Pers.] pastures and fixed-stocked at different rates under continuous and 8-paddock rotation methods during each of 7 years to: 1) compare stocking methods for daily gain per animal (ADG) and gain/ha; and 2) quantify relationships of ADG with forage mass and forage allowance. Each of 3 levels of stocking rate, 4.9, 6.4, and 8.6 hd/ha, significantly affected ADG at 1.24, …
Characteristics Of Lactic Acid Bacteria Strains Isolated From Tibetan Plateau And Their Effects On Silage Quality Of Italian Ryegrass (Lolium Multiflorum Lam.) At Low Temperature,
2023
Nanjing Agricultural University, China
Characteristics Of Lactic Acid Bacteria Strains Isolated From Tibetan Plateau And Their Effects On Silage Quality Of Italian Ryegrass (Lolium Multiflorum Lam.) At Low Temperature, Siran Wang, Mudasir Nazar, Niaz Ali Kaka
IGC Proceedings (1977-2023)
Temperature is an important factor affecting ensilage. In cold regions, low temperature could be an adverse environmental factor during ensiling. However, little research has focused on improving silage quality at low temperatures. This study aimed to examine two lactic acid bacteria (LAB) strains (LCG9 and TG1) isolated from the Tibetan Plateau, and evaluate their effects on the silage quality of Italian ryegrass (Lolium multiflorum Lam.) at three temperatures (10° C, 15° C and 25° C). The isolated strains and one commercial inoculant (G, Lactobacillus plantarum MTD-1) were evaluated by morphological, physiological and biochemical tests. Strains G, LCG9, TG1 and …
It Takes More Than Calcium To Neutralize Soil Acidity,
2023
University of Kentucky
It Takes More Than Calcium To Neutralize Soil Acidity, Edwin L. Ritchey, Christopher D. Teutsch, John H. Grove
IGC Proceedings (1977-2023)
Proper pH management is the foundation to a good soil fertility program. Soil pH influences nutrient availability and root growth and function. Just because an agricultural product contains calcium does not mean that it will change soil pH. The effectiveness of three calcium products in raising soil pH was compared to an untreated check in acid soils. A field trial was conducted at 16 locations across Kentucky and a laboratory incubation study was conducted at the University of Kentucky Research and Education Center. The same application rates were used for the three products, whether in field trials or laboratory incubations. …
A Novel Tractor Operated Grass Seed Harvester Developed In India,
2023
Indian Grassland and Fodder Research Institute, India
A Novel Tractor Operated Grass Seed Harvester Developed In India, Chandra Shekhar Sahay, D. S. Thorat, P. S. Pathak
IGC Proceedings (1977-2023)
The demand of green and dry fodder in India is estimated to increase to 1170 and 650 m tonne whereas availability is expected to be at 411.3 and 488 m tonne in 2025, respectively, depicting deficit of about 64.9% green fodder and 24.9% dry fodder (Vision 2030, ICAR - IGFRI, Jhansi, 2011). In forages, availability of quality seed is only 25-30% in cultivated fodder and less than 10 % in range grasses and legumes (Vision 2050, IGFRI). Prices paid for grass seeds of native species vary from Rs.5,000 to 6,500 per kg for clean, un-haired seeds due to excessive use …
Making Round Bale Silage – Lessons Learned From An On-Farm Survey Of Baleage In Kentucky,
2023
University of Kentucky
Making Round Bale Silage – Lessons Learned From An On-Farm Survey Of Baleage In Kentucky, Jimmy C. Henning, Jeff Lehmkuhler, Brandon Sears, Corinne Belton, L. Berg, Don Sorrell, April Wilhoit
IGC Proceedings (1977-2023)
The ability to make silage in round bale packages allows producers to avoid rain damage and produce high quality stored forage. The proliferation of bale wrappers (both individual and inline types) has made this technology more available to producers. Although the process for making baleage is well documented, producers have experienced poor fermentation and in some cases botulism toxicity from baleage. The parameters of good silage are well known and include pH below 5.0 and lactic acid concentrations above 3% on a DM basis. However, tests of farmer- produced baleage reveals that often these target values are not achieved. To …
Yellotas: A Unique Yellow Serradella Cultivar With Potential For Permanent Pasture Environments,
2023
University of Tasmanian, Australia
Yellotas: A Unique Yellow Serradella Cultivar With Potential For Permanent Pasture Environments, G. Martin, Rowan W. Smith, E. J. Hall, Matthew Newell, R. Haling, R. C. Hayes
IGC Proceedings (1977-2023)
Yellow serradella (Ornithopus compressus L.) has been identified as a priority self-regenerating annual legume species for permanent pasture environments in south-eastern Australia. However, most yellow serradella genotypes exhibit high levels of hard seed and slow rates of hard seed breakdown, which reduces regeneration density in the years following the year of sowing . One cultivar, Yellotas, exhibits a much faster rate of hard seed breakdown and has been identified as one of only a handful of cultivars of that species with promising persistence in permanent pasture environments. In addition, this cultivar is substantially easier to de-hull than other cultivars …
