Annual Report of Progress
to the
MISSISSIPPI SOYBEAN PROMOTION BOARD
for 1997

Objectives and Significant Accomplishments

1. Evaluate the response of Group IV and early planted Group V soybeans to seed and hopper-box treatments.
   
   We were unable to equip a planter for narrow row on-farm seedling disease studies in 1997. Therefore, all trials were conducted at the Delta Research and Extension Center. Results of the three Apron, Apron XL treatments are given in Tables 1-3. In order t o have severe seedling disease, it is necessary to have a period of time in which the weather is cool and water stands on the emerging seedlings. Environmental conditions following planting were warm and dry. Even though the plots were inoculated, disease development did not occur in any of the three trials. Therefore, there were no significant differences in percent seedling stands and yields between the treatments.
   
   Results of the Gustafson Seed Treatment Trial are given in Table 4. None of the treatments significantly increased seedling stands on either counting date. Plots receiving the two seed treatments, LS 149F, 2.4 fl oz and Apron 2.65F, .2 fl oz per CWT yielded significantly higher over the untreated control.
   
   Results of the Novartis Apron XL seed treatment one are given in Table 5. None of the treatments had significantly higher seedling stands or yields over the untreated control. Results of the Novartis Apron XL seed treatment trial two are given in Table 6. None of the seed treatments significantly increased seedling stands or soybean yields.
   
   
2. Determine efftcts of late-season foliar fungicide applications on Group IV and Early Group V soybeans on seed quality, germination, vigor, and yield.
   
   Results of the foliar fungicide trial one are given in Table 7. None of the treatments yielded significantly higher over the untreated control. Seed from the various plots are being germinated and plated out to determine differences in seed quality and pr esence of seed pathogens.
   
   Results of the foliar fungicide trial two are given in Table 8. This trial was conducted to evaluate foliar fungicides for the control of late-season foliar diseases. Disease pressure was light and very little foliar disease was noted in the plots. None o f the fungicide treated plots yielded significantly higher over the untreated control.
   
   The foliar fungicide response trial was initiated to determine if different Maturity Group IV varieties would respond differently to foliar fungicide treatment. Results are given in Table 9. The growing season was ideal and very little foliar disease was noted in the plots. None of the five varieties evaluated showed a significant response to either of the foliar fungicide treatments.
   
   
3. Evaluate response of determinate vs. indeterminate Group IV soybeans to late-season foliar fungicide applications.
   
   This experiment was initiated to determine if determinate or indeterminate maturity group IV varieties would respond to foliar fungicide treatments. Results are given in Table 10. Growing conditions were ideal and very little foliar disease was observed. None of the foliar fungicide treatment significantly increase yields over the untreated control.

   Soybeans in Mississippi Mississippi Agricultural and Forestry Experiment Station  Mississippi State University Extension Service Division of Agriculture, Forestry and Veterinary Medicine

   For information about this page, contact OAC Webmaster This site is made possible by the Mississippi Soybean Promotion Board and is maintained by the Office of Agricultural Communications at Mississippi State University.

   < /body>