Agents for defoliating cotton

Details Agents for defoliating cotton Agents for defoliating cotton

1990-08-02

1992-12-15

Raymond, Richard L.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71 74, 71 92, A01N 3108, A01N 4354, A01N 4364

Patent

active

051713527

ABSTRACT:
Cotton plants are defoliated by the action of an amount, having a defoliant effect, of a phenylsulfonylurea Ia or Ib ##STR1## where R.sup.1 is C.sub.1 -C.sub.4 -alkyl or C.sub.3 -C.sub.5 -alkoxyalkyl, and these radicals may each carry from 1 to 3 halogen atoms, or C.sub.3 - or C.sub.4 -alkenyl or C.sub.3 - or C.sub.4 -alkynyl, R.sup.2 is F, Cl or Br, R.sup.2' is H, F, Cl or Br, R.sup.3 is H, CH.sub.3 or C.sub.2 H.sub.5, R.sup.4 is halogen, CH.sub.3 or OCH.sub.3, R.sup.5 is CH.sub.3 or OCH.sub.3, R.sup.6 is halogen, C.sub.1 - or C.sub.2 -alkyl, C.sub.1 - or C.sub.2 -alkoxy, C.sub.1 - or C.sub.2 -alkylthio or C.sub.1 - or C.sub.2 -alkylamino and Z is CH or N, or of an alkali metal or alkaline earth metal salt of a compound Ia or Ib.

REFERENCES:
patent: 4127405 (1978-11-01), Levitt
patent: 4659366 (1987-04-01), Stetter et al.
Proc. Br, Crop Protection Conference--Weeds, (1980) vol. 1 pp. 7-14.

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