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Effects of (NH4)2SO4 and BCH 81508 S on Efficacy of Sethoxydim

Published online by Cambridge University Press:  12 June 2017

Alan C. York ,
David L. Jordan  and
John W. Wilcut
Alan C. York
Affiliation:
Crop Sci. Dep., N.C. State Univ., Raleigh, NC 27695-7620
David L. Jordan
Affiliation:
Crop Sci. Dep., N.C. State Univ., Raleigh, NC 27695-7620
John W. Wilcut
Affiliation:
VA Polytechnic Inst, State Univ., Tidewater Agric. Exp. Stn., 6321 Holland Rd., Suffolk, VA 23437
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Abstract

Field experiments were conducted to determine effects of adding 2.8 kg/ha (NH4)2SO4 and/or substituting BCH 81508 S for crop oil with sethoxydim applied to large crabgrass, corn, johnsongrass, and common bermudagrass. Adding (NH4)2SO4 did not affect control of johnsongrass or common bermudagrass but did increase control of large crabgrass and corn by 6 and 15%, respectively. Cora control was enhanced more by (NH4)2SO4 at lower sethoxydim rates. Substituting BCH 81508 S for crop oil increased seedling johnsongrass, large crabgrass, common bermudagrass, rhizome johnsongrass, and corn control by 7, 9, 9, 10, and 15%, respectively. A sethoxydim rate by spray adjuvant interaction was observed with seedling johnsongrass, common bermudagrass, and corn where response to BCH 81508 S decreased as sethoxydim rates increased. The effects of substituting BCH 81508 S for crop oil and adding (NH4)2SO4 were independent.

Keywords

BCH 81508 S, an adjuvantsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onecommon bermudagrass, Cynodon dactylon (L.)Pers. ♯3 CYNDAcorn, Zea mays L.johnsongrass, Sorghum halepense (L.)Pers. ♯ SORHAlarge crabgrass, Digitaria sanguinalis (L.)Scop. ♯ DIGSASpray adjuvantsCynodon dactylonDigitaria sanguinalisSorghum halepenseZea maysCYNDADIGSASORHA
Type
Research
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 76 - 80
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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