190 – 198 of 716 Results
36-2020 Soybean Iron Deficiency Chlorosis MG V Roundup Ready 2 Xtend Virtual Tour, Lowndes County
This virtual tour Group V Roundup Ready 2 Xtend represents the site and ratings in Lowndes County, MS. Results from the conduct of MSPB's SMART project under the direction of Dr. Trent Irby with support from MSU Extension Reid Nevins and Charlie Stokes.
2020 Soybean Iron Deficiency Chlorosis MG Enlist (E3) Virtual Tour, Lowndes County
This virtual tour of Enlist (E3) Group IV represents the site and ratings in Lowndes County, MS. Results from the conduct of MSPB's SMART project under the direction of Dr. Trent Irby with support from MSU Extension Reid Nevins and Charlie Stokes.
2020 Soybean Iron Deficiency Chlorosis MG Mid IV RR2X Virtual Tour, Lowndes County
This virtual tour of RR2X maturity group Mid IV represents the site and ratings in Lowndes County, MS. Results from the conduct of MSPB's SMART project under the direction of Dr. Trent Irby with support from MSU Extension Reid Nevins and Charlie Stokes.
36-2020 Soybean Variety Resoponse to Iron Deficiency Chlorosis (IDC) Virtual Tour MG Late IV RR2X Varietes,Lowndes County
This virtual tour of MG Late IV varieties represents the site at Lowndes County, MS. Results from the conduct of MSPB's SMART project under the direction of Dr. Trent Irby with support from MSU Extension agent Reid Nevins and Area Extension agent Dr. Charlie Stokes.
Cover Crop Variety Trials
Results from cover crop variety trials that were conducted in Mississippi and Tennessee are presented and summarized.
37-2019 Aboughanem Completion of Molecular Characterization Charcoal Rot Fungus Mycoviruses Annual Report
In this project we propose to look for innovative and environment-friendly methods. The project is based on the premise that certain mycoviruses (viruses infecting fungi) can seriously affect/reduce pathogenicity of their hosts - the effect termed “hypovirulence”. These mild isolates of fungi are then used to outcompete more aggressive (pathogenic) isolates in certain environments (soils) and reduce effects of the disease. This strategy was successfully applied in the control of chestnut blight disease in Europe and can be potentially applied to any other fungus.
78-2019 Characterization of the soybean taproot decline pathogen Xylaria sp.; a new disease and pathogen in Mississippi soybean production fields
A mystery disease of soybean gained attention by growers and consultants in the late 2000s. Interest among Mississippi State University Plant Pathologists soon followed. What we discovered was an emerging soybean disease caused by an undescribed fungus. The symptoms of the disease consisted of foliar chlorosis and interveinal necrosis, like many documented root diseases. As a result, we believe the disease was prevalent in MS soybean production but may have been mis-diagnosed in the field. The symptom unique to this disease is the brittle taproot, which results in the plant breaking at the soil line.
60-2019 Characterization of Antifungal Activity of Endophytic Bacteria Associated with Soybean Charcoal Rot Disease System Annual Report
Soybean yield reduction due to Charcoal rot disease caused by the fungus Macrophomina phaseolina in the United States was 20.8 million bushels in 2015. The disease accounts for an estimated loss of 1.48% of soybean yield in Southern states. This disease is particularly problematic due to the lack of fungicides capable of providing effective disease control and lack of genetic resistance in cultivars. Endophytic bacteria occur in all plants and we have demonstrated some differences in endophyte communities of diseased and asymptomatic plants growing adjacent to one another in disease patches of soybean fields.
31-2018 Evaluation of Soybean Breeding Lines for Resistance to Phomopsis Seed Decay and For High Seed Germinability Final Report
Phomopsis seed decay (PSD) of soybean is a major cause of poor seed quality in most soybean production areas, especially in the mid-southern region of the United States. PSD is caused by the seed-borne fungal pathogen Phomopsis longicolla (syn. Diaporthe longicolla). Breeding for PSD-resistance is the most cost-effective long-term strategy to control this disease. In recent years, new sources of resistance to PSD have been identified (Li et al., 2011, 2015). Lines with high germinability have also been identified (Smith et al., 2008). Crosses were made between these new sources, resulting in the development of multiple heterogeneous breeding lines with the potential for having both high germinability and resistance to PSD.