Inhibition of vegetative growth

Details Inhibition of vegetative growth Inhibition of vegetative growth

2001-12-04

2002-09-17

Pryor, Alton (Department: 1616)

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

Reexamination Certificate

active

06451741

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to the use of a composition including 5-acetamido-2,4-dimethyltrifluoromethanesulfonanilide and/or trinexapac-ethyl(ethyl 4-cyclopropyl(hydroxy)methylene-3,5-dioxocyclohexanecarboxylate) in a spray foam form. This composition is a plant growth regulator.
BACKGROUND OF THE INVENTION
N-substituted perfluoroalkanesulfonamides are broadly described in U.S. Pat. No. 3,639,474 as active herbicides and plant growth modifiers. 5-acetamido-2-chlorotrifluoromethanesulfonanilide and 5-acetamido-2-methyltrifluoromethanesulfonanilide were particularly disclosed therein to have particular plant growth modifying activity, i.e., as to their ability to retard the growth of grass without significant distortion of the normal foliar shape. This plant growth modifying activity is of interest because it reduces the number of times grass must be mowed.
It has previously been found that a novel derivative of trifluoromethanesulfonanilide, 5-acetamido-2,4-dimethyltrifluoromethanesulfonanilide, is a much more effective grass growth regulator than 5-acetamido-2-methyltrifluoromethanesulfonanilide, the preferred compound of the above mentioned patent. It has been found, both in greenhouse testing and in outdoor testing, that the compounds of the present invention can be used at greatly reduced rates of application. This result is both unexpected and economically desirable.
The invention also includes horticulturally acceptable salts of 5-acetamido-2,4-dimethyltrifluoromethanesulfonanilide, novel intermediates useful for its preparation and processes for the preparation thereof.


REFERENCES:
patent: 3894078 (1975-07-01), Fridinger

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