Skip to main content Accessibility help
×
Home

Effect of preharvest desiccants on Group IV Glycine max seed viability

  • Andrew C. Bennett (a1) and David R. Shaw

Abstract

The effect of two commonly used desiccant tank mixtures on Glycine max seed production and viability when applied at G. max growth stages R5 to R8 (R5 = beginning pod fill, R6 = full green pod, R7 = beginning maturity, R8 = full maturity) was evaluated. Two mid-Group IV G. max cultivars, one conventional (‘Northrup King 4260’) and one glyphosate-tolerant (‘Asgrow 4701RR’), were evaluated. Tank mixtures containing either glyphosate + sodium chlorate or paraquat + sodium chlorate + surfactant reduced yield, seed weight, and subsequent germination, emergence, and seedling growth when applied at R5 or R6 to either G. max cultivar. Glyphosate + sodium chlorate applied at R7 reduced germination of the glyphosate-tolerant cultivar. When applied at R6 or R7, glyphosate + sodium chlorate reduced the next generation's seedling length compared to paraquat + sodium chlorate. Glyphosate + sodium chlorate increased the number of abnormal seedlings produced in the conventional cultivar compared to paraquat + sodium chlorate. These results indicate that preharvest desiccant applications should not be made prior to G. max maturity (R7).

Copyright

Corresponding author

Corresponding author. Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762; dshaw@weedscience.msstate.edu

References

Hide All
Anonymous. 1998. Weed control guidelines for Mississippi. Mississippi State, MS: Mississippi State University Extension Service. Pub. 1532.
Association of Official Seed Analysts. 1988. Rules for testing seeds. J. Seed Technol. 12:1122.
Azlin, W. R. and McWhorter, C. G. 1981. Preharvest effects of applying glyphosate to soybeans (Glycine max). Weed Sci. 29:123127.
Baur, J. R., Miller, F. R., and Bovey, R. W. 1977. Effect of preharvest desiccation with glyphosate on grain sorghum seed. Agron. J. 69:10151018.
Bovey, R. W., Miller, F. R., and Baur, J. R. 1975. Preharvest desiccation of grain sorghum with glyphosate. Agron J. 67:618621.
Buehring, N. W., Hancock, F. G., Roberts, G. M., and Reginelli, D. B. 1994. Early maturity soybeans in Mississippi. Pages 115122 In Proceedings of the Southern Soybean Conference. St. Louis, MO: American Soybean Association.
Cathey, G. W. and Barry, H. R. 1977. Evaluation of glyphosate as a harvest-aid chemical on cotton. Agron. J. 69:1114.
Cerkauskas, R. F., Dhingra, O. D., Sinclair, J. B., and Foor, S. R. 1982. Effect of three desiccant herbicides on soybean (Glycine max) seed quality. Weed Sci. 30:484490.
Delannay, X., Bauman, T. T., Beighley, D. H., et al. 1995. Yield evaluation of a glyphosate-tolerant soybean line after treatment with glyphosate. Crop Sci. 35:14611467.
Ellis, J. M., Shaw, D. R., and Barrentine, W. L. 1998. Herbicide combinations for preharvest weed desiccation in early maturing soybean (Glycine max). Weed Technol. 12:157165.
Fehr, W. R., Caviness, C. E., Burmood, D. T., Pennington, J. S. 1971. Stage of development descriptions for soybeans, Glycine max (L.) Merrill. Crop Sci. 11 (6): 929931.
Gabe, H. L. 1994. Indeterminate short season soybeans for the South: Some breeding and agronomic considerations. Pages 125130 In Proceedings of the Southern Soybean Conference. St. Louis, MO: American Soybean Association.
Oliver, L. R. 1993. Weed control concerns and cost effective strategies. Pages 129133 In Proceedings of the Southern Soybean Conference. St. Louis, MO: American Soybean Association.
Rabb, J. L. and Ryan, S. M. 1993. Cultural practices for early-maturing soybean production. Pages 124128 In Proceedings of the Southern Soybean Conference. St. Louis, MO: American Soybean Association.
Ratnayake, S. and Shaw, D. R. 1992 Effects of harvest-aid herbicides on soybean (Glycine max) seed yield and quality. Weed Technol. 6:339344.
Whigham, D. K. and Stoller, E. W. 1979. Soybean desiccation by paraquat, glyphosate, and ametryn to accelerate harvest. Agron. J. 71:630634.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed