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Herbicide, Leaf Type, and Row Spacing Response in Cotton

  • J. A. Andries (a1), A. G. Douglas (a1) and A. W. Cole (a2)

Abstract

Near isogenic strains of okra, super okra and normal leaf cotton (Gossypium hirsutum L.) were grown in rows spaced 25, 50, and 100 cm apart and were sprayed with various combinations of trifluralin (α,α,α,trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) and fluometuron [1,1-dimethyl-3-(α,α,α,-trifluoro-m-tolyl)urea]. Neither row spacing nor leaf type had any effect on early season weed control. Late season control was better with normal and okra leaf types than with the super okra leaf type. Weed control was significantly better with additional postemergence application of herbicides than with only preplant and preemergence applications. Although the cotton varied in opening date with herbicide programs there was no difference in total yield.

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References

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1. Andries, J.A. and Douglas, A.G. 1973. Row width effect on cotton performance. Mississippi Agr. and Forest. Exp. Sta. Information Sheet 1218.
2. Andries, J.A., Douglas, A.G., and Albritton, R.C. 1971. Performance of normal, okra, and super okra leaf types in three row widths. Proc. Beltwide Cotton Prod. – Res. Conf. 5960.
3. Andries, J.A., Jones, J.E., Sloane, L.W., and Marshall, J.G. 1969. Effects of okra leaf shape on boll rot, yield and other important characters of Upland Cotton, Gossypium hirsutum L. Crop Sci. 9:705710.
4. Andries, J.A., Jones, J.E., Sloane, L.W., and Marshall, J.G. 1970. Effects of super okra leaf shape on boll rot, yield and other characters of Upland Cotton, Gossypium hirsutum L. Crop Sci. 10:403407.
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7. Cooley, A.W. and Smith, D.T. 1970. Cotton response to topical postemergence herbicides. Texas Agr. Exp. Sta. Prog. Rep. 2854.
8. Douglas, A.G. and Andries, J.A. 1970. Narrow row cotton culture in Mississippi – a progress report. Proc. Beltwide Cotton Prod. – Res. Conf. 6162.
9. Hogue, C.W. 1971. Comparison of directed and topical applications of herbicides for weed control in cotton. Mississippi Farm Res. 34(5): 1,8.
10. Johnson, R.E. 1969. Spacing effects on growth of cotton. Proc. Beltwide Cotton Prod. – Res. Conf. 105108.
11. Smith, D.T. and Cooley, A.W. 1970. Response of cotton to topical herbicide applications at four growth stages. Proc. S. Weed Sci. Soc. 23:53.

Herbicide, Leaf Type, and Row Spacing Response in Cotton

  • J. A. Andries (a1), A. G. Douglas (a1) and A. W. Cole (a2)

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