Plant growth regulation using 3-cyano-1-phenylpyrazoles such as fipronil
AssigneeRhone-Poulenc Inc.
InventorsReed Nathan Royalty, Nguyen Dang Long, Michael Thomas Pilato, Nicholas Mark Hamon, Ngadi Yahmad, Djoko Prabowo Sastrosatomo
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Abstract
This invention relates to a new method of plant growth regulation whereby a 1-phenylpyrazole such as fipronil is applied to a crop or a seed.
Claims31
A method for treating plants in need of plant growth promotion which are not in need of insect control, said method comprising applying to said plants, to the seeds from which they grow or to the locus in which they grow, a non-phytotoxic, effective plant growth promoting amount of a compound having the formula:
- ##STR2## wherein:
- R.sub.1 is CN;
- R.sub.2 is S(O).sub.n R.sub.3 ;
- R.sub.3 is alkyl or haloalkyl;
- R.sub.4 is --NR.sub.5 R.sub.6 ;
- R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, alkyl, haloalkyl, C(O)alkyl and C(O)OR.sub.7 ;
- R.sub.7 is alkyl;
- X is C-R.sub.12 ;
- R.sub.11 and R.sub.12 are independently halogen or hydrogen;
- R.sub.13 is halogen, haloalkyl, haloalkoxy or SF.sub.5 ;
- and
- n is 0, 1 or 2;
- said plants, seeds and locus having substantially no insects present or expected in their vicinity during plant growth.
A method for treating soybean plants in need of growth promotion, said method comprising applying to the seeds from which said soybean plants grow, prior to sowing said seeds, a non-phytotoxic, effective plant growth promoting amount of a compound having the formula:
- ##STR3## wherein:
- R.sub.1 is CN;
- R.sub.2 is S(O).sub.n R.sub.3 ;
- R.sub.3 is alkyl or haloalkyl;
- R.sub.4 is --NR.sub.5 R.sub.6 ;
- R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, alkyl, haloalkyl, C(O)alkyl and C(O)OR.sub.7 ;
- R.sub.7 is alkyl;
- X is C-R.sub.12 ;
- R.sub.11 and R.sub.12 are independently halogen or hydrogen;
- R.sub.13 is halogen, haloalkyl, haloalkoxy or SF.sub.5 ;
- and
- n is 0, 1 or 2.
A method for treating soybean plants in need of growth promotion which are not in need of insect control, said method comprising applying to the seeds from which said soybean plants grow, prior to sowing said seeds, a non-phytotoxic, effective plant growth promoting amount of a compound having the formula:
- ##STR4## wherein:
- R.sub.1 is CN;
- R.sub.2 is S(O).sub.n R.sub.3 ;
- R.sub.3 is alkyl or haloalkyl;
- R.sub.4 is --NR.sub.5 R.sub.6 ;
- R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, alkyl, haloalkyl, C(O)alkyl and C(O)OR.sub.7 ;
- R.sub.7 is alkyl;
- X is C-R.sub.12 ;
- R.sub.11 and R.sub.12 are independently halogen or hydrogen;
- R.sub.13 is halogen, haloalkyl, haloalkoxy or SF.sub.5 ;
- and
- n is 0, 1 or 2;
- said plants and seeds having substantially no insects present or expected in their vicinity during plant growth.
Dependencies are inferred from the claim text.