109 – 117 of 737 Results
07-2022 Burdine Developing Agronomy Leaders Annual Report
Agronomy is a diverse field of study in plant and soil sciences which include external factors such as: entomology, genetics, physiology, biology, and chemistry. Recent trends in undergraduate enrollment show many students prefer to specialize in a specific science rather than a generalist discipline like agronomy. As the number of applied-science agronomists decreases, we face a shortage of individuals with the knowledge to perform field diagnostics, develop overall farm management plans or conduct quality research. As the number of trained field agronomist declines, having access to people that can answer day-to-day questions could become a serious issue.
06-2022 Impact of Cover Cropping System on Soybean Grain Yield and Soil Health on Animal Performance
In Mississippi, opportunities exist to combine crop and livestock enterprises in a manner that imparts major benefits to the environment, while simultaneously generating more revenue for agricultural producers. These integrated crop-livestock systems (ICLS) can potentially increase crop yields, enhance natural resource utilization, exploit natural pest control processes, reduce nutrient concentrations and environmental risk, improve soil health parameters, and provide alternative sources of revenue through livestock marketing.
04-2022 Prevost Investigating High Mg Soils and the Impacts on Soybean Production
Magnesium is a critical nutrient for crop development and grain production that is commonly found to be in moderate to high ranges throughout the Mississippi Delta. High soil magnesium exacerbates the already low percentage of available potassium by super-saturating exchange sites with its double positive charge and essentially crowding out the potassium ions. This magnesium induced antagonism is known and generally addressed by increasing potassium rates in fertility recommendations. New knowledge suggests negative effects extending beyond that of simple potassium antagonism. High magnesium can also negatively impact soil structure and related functions. As clay particles disaggregate (i.e., disperse) under high magnesium conditions soil pore space decreases resulting in crusting and compaction thereby reducing soil aeration and water infiltration/internal drainage.
02-2022 Bryant Fertility and Agronomic Resource Management for Soybean Annual Report
Near record high fertilizer prices has placed increased strain on already small profit margins. For this reason, up to date non-biased research data is necessary to ensure that all soil fertility management decisions are creating not only maximum yield but profitability as well. An example of this would be ensuring the any yield increases associated with micronutrient applications are similarly increasing net returns. Many growers in Mississippi also face K deficiency on a regular basis. As K is mobile in plant tissue and early detection is critical, we must ensure that tissue samples are being collected from the correct location in the plant canopy. Due to relatively flat landscape of the Delta region of Mississippi, flooding is a problem that many soybean growers must deal with on a fairly regular basis. After flooding events growers are looking for ways to accelerate soybean recovery. With this, many growers will make a foliar application of N with the belief that it supplements what has been lost from root inactivity and hastens recovery time. It is also crucial that research personnel continually collect production field level data to stay abreast of ever-changing soil conditions and be able to proactively prepare for possible issues. Specific objectives are 1) Data collection; 2) Establishing optimum tissue sampling location within a plant canopy for early deficiency detection of plant-mobile nutrient potassium; 3) Establishing optimum boron fertilizer application rates and timings for soybean grown on soils ranging from clay to sandy loam; 4) Determine the effect of foliar N applications on soybeans subjected to flooding during the late vegetative to early reproductive growth stages; and 5) Provide first-hand learning opportunities for existing and new soil fertility programs.
Morpho Physiological, Yield, and Transgenerational Seed Germination Response of Soybeans to Temperature
Temperature is the primary factor affecting the morpho-physiological, developmental, and yield attributes of soybean. Despite several temperature and soybean studies, functional relationships between temperature and soybean physiology and yield components are limited. An experiment was conducted to determine the optimum temperature for soybean gas exchange and yield components using indeterminate (Asgrow AG5332, AG) and determinate (Progeny P5333 RY, PR) growth habit cultivars. Plants grown outdoors were exposed to 5 day/night temperature treatments, 21/13, 25/17, 29/21, 33/25, and 37C/29C, from flowering to maturity using the sunlit plant growth chambers.
01-2022 Cook Management of Insect Pest in Mississippi
Experiments were conducted to evaluate the performance of selected insecticides against a range of soybean insect pests including, seedling/soil insects (corn rootworm, wireworm, pea leaf weevil), bean leaf beetle, soybean looper, and stink bugs (including redbanded stink bug).
Soil Microbes and Soil Biology Fact Sheet
A fact sheet that covers the importance of the soil microbial population to soil health is presented.
Carbon Credits--MSSOY White Paper
Carbon credits, programs, and contracts for payment are discussed.
36-2022 Irby SMART Program Annual Report
This SMART Program annual report was conducted by Dr. Trent Irby and funded through the Mississippi Soybean Promotion Board. This MSPB supported research, on-farm soybean variety demonstrations is conducted throughout Mississippi.