91 – 99 of 737 Results
43-2022 Safeguarding Mississippi soybean production from interactive heat and drought stress-induced yield and quality losses Final Report
Soybean yields have been inversely related to maximum summer air temperatures, with yield suppression of up to 6%, when the temperatures are above 85 °F during critical developmental stages under rainfed conditions. In addition to the various impacts observed, the detailed analysis highlights that combined drought and heat stress will amplify a negative effect on seed number, seed weight, and seed composition in current and future production systems. Not surprisingly, the highest yield and quality penalty are expected to occur when the heat and drought stresses coincide with flowering and pod filling in soybean (R1 to R6).
43-2021Safeguarding Mississippi soybean production from interactive heat and drought stress-induced yield and quality losses annual report
Under field conditions, soybean exposed to high temperature (97°F) and drought stress suppresses the plant health, quality, and nutritional value beans by reducing leaf photosynthetic rate, stomatal conductance, and increased canopy temperatures during R1 to R6. To date, soybean breeding programs are successful in increasing yield potential in a favorable environment. However, progress in breeding for interactive stress tolerance has not received similar attention. Here, we aim to quantify soybean plant health, yield, and seed compositional changes in response to heat and drought stress conditions.
27-2022 Development of an Automated System to Incorporate Holes in Lay-Flat Irrigation Tubing During Initial Deployment in Mississippi Soybean Production Systems Annual Report
The adoption of Best Management Practices (BMPs) by producers in the Mississippi Delta is minimal. One technology that has been proven to reduce water usage and provide these positive economic impacts is the use of Computerized Hole Selection (CHS). CHS determines the correct hole size for each individual furrow in a lay-flat irrigation pipe system by accounting for row length, inlet and required individual furrow flow, pipeline pressure and hydraulics, and crown elevation.
65-2022 MSSOY Website Hosting and Management Annual Report
The Mississippi Soybean Promotion Board (MSPD) websites were hosted by Network Solutions, but the hosting was causing many issues. Mississippi State University Extension Center for Technology Outreach (ECTO) worked with Network Solutions to identify the issues causing the site to crash, but the root cause was never identified. It was determined that the best course of action would be to move the hosting from Network Solutions to ECTO servers in the Bost Building. The hosting was officially moved to ECTO servers at the beginning of Quarter 1 and all hosting issues have been resolved.
64-2022 Improving Herbicide Efficacy and Residue Penetration of Herbicides Using Common Adjuvants for Weed Control in Soybean Annual Report
Results from this study will improve guidance for farmers as to which adjuvants are the most effective when required for use on the label. Furthermore, this study will evaluate new adjuvant types compared to older ones to assess if they stack up compared to accepted adjuvant types. Research will also be conducted to ensure that soil-applied herbicides are able to penetrate through dense cover crop residues by incorporating non-ionic surfactants or organosilicone adjuvants. Data from these studies will be made available with publication on-line and in Extension materials. Results from the study will be adapted for an easy-to-use guide to improve adjuvant purchases at the farm level.
63-2022 Determining Duration of Residual Control of Soil-applied Herbicides to Form Total Preemergence Herbicide Programs in Soybean annual report
To overcome herbicide resistance and protect remaining chemistries from resulting in developed herbicide resistance, it is crucial to utilize as many herbicide chemistries as possible to manage weed populations. These proposed studies would investigate a wide spectrum of soil-applied herbicides for their ability to alleviate selection pressure on POST chemistries. Not only do soil-applied herbicides have the potential to slow the development of herbicide resistance, but programs built upon these chemistries could result in an entire cropping season without competition from weedy species.
62-2022 Improving dryland soybean yield, profit, and health of dominant soils across Mississippi
The integration of cover crops and poultry manure into existing soybean cropping systems could potentially improve soil health in the east-central Mississippi. This study evaluated the influence of different cover crop species and fertilizer treatments on soil physical and soil chemical properties at the Pontotoc Ridge-Flatwoods Branch Experiment Station in Pontotoc County, MS. The study was initiated in October 2017 and carried out through October 2022. The field trials were conducted under no-tillage, rainfed conditions. The cover crop treatments included cereal rye, hairy vetch, winter wheat, mustard and cereal rye, and native vegetation. The three fertilizer treatments included poultry litter, commercial inorganic fertilizer and no fertilizer.
53-2022 CHARACTERIZE ROOT MICROBIAL COMMUNITIES WITH ANTI-FUNGAL ACTIVITIES IN SOYBEAN
Evaluation of root microbiomes for crop growth promotion and disease resistance presents unique opportunities. We aim to understand the diversity of rhizobiome microorganisms that cause specific phenotypes in soybeans, test rhizobiome isolates for beneficial activities, and utilize this knowledge to establish methods for improved growth and biological control of soil pathogens.
41-2022 North Video Support for Mississippi Soybean Producers
Identify important soybean production topics and produce video segments that will provide producers with current, timely information to address issues related to those topics; video presentations of results from MSPB-funded research projects that will be posted on the MSPB website (www.mssoy.org)