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Effect of Soybean (Glycine max) Cultivar, Tillage, and Rye (Secale cereale) Mulch on Sicklepod (Senna obtusifolia)

Published online by Cambridge University Press:  12 June 2017

Donn G. Shilling ,
Barry J. Brecke ,
Clifton Hiebsch  and
Gregory MacDonald
Donn G. Shilling
Affiliation:
Dep. Agronomy, Univ. Florida, Gainesville, FL 32611
Barry J. Brecke
Affiliation:
Agric. Res. & Educ. Cent., Jay, FL 32565
Clifton Hiebsch
Affiliation:
Dep. Agronomy, Univ. Florida, Gainesville, FL 32611
Gregory MacDonald
Affiliation:
Dep. Agronomy, Univ. Florida, Gainesville, FL 32611
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Abstract

Field studies were conducted to determine the effect of soybean cultivar, tillage, and rye mulch on sicklepod growth. Early-season sicklepod height was not affected by tillage or mulch. Sicklepod was tallest when grown with ‘Centennial’ or ‘Biloxi,’ the tallest cultivars, and shortest when grown with a dwarf isoline of ‘Tracy M,’ the shortest cultivar. Soybean competition reduced early-season weed density by 30 to 50%, depending on the cultivar. Centennial and dwarf Tracy M caused a 30% reduction in early-season sicklepod biomass while ‘Sharkey’ and Biloxi reduced sicklepod growth by 40%. By late-season, sicklepod biomass reduction ranged from 18% (Tracy M) to 55% (Biloxi) and was directly related to soybean cultivar height. Mulch or no-tillage independently reduced sicklepod biomass.

Keywords

Rye, Secale cereale L.sicklepod, Senna obtusifolia (L.) Irwin and Barneby (formerly Cassia obtusifolia L.) # CASOBsoybean, Glycine max (L.) Merr.No-tillageCASOBGlycine max (L.) Merr.
Type
Research
Information
Weed Technology , Volume 9 , Issue 2 , June 1995 , pp. 339 - 342
Copyright
Copyright © 1995 by the Weed Science Society of America 

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