Basf Corporation

Mary Callan

Charles W Finch

Charles W Helpert

Hans Von Amsberg

Wilhelm Rademacher

Warren E Shafer

Candace L Black-Schafer

Wihelm Rademacher

Peter Eberhard Schott

Johannes Jung

Provided are compositions and methods of improving a plant growth factor. The compositions and methods contain combinations of aminoethoxyvinylglycine and mepiquat chloride. The compositions provide an improvement in a plant growth factor, such as an increase in yield in cotton plant.

Aminoethoxyvinylglycine in combination with mepiquat chloride

Provided are compositions and methods of improving a plant growth factor. The compositions and methods contain combinations of plant growth regulators such as plant growth retardants and inhibitors of ethylene biosynthesis or action. The ethylene inhibitors comprise substituted oxime-ethers having the general formula: ##STR1## where R1 and R2 independently of one another are C1-C6-alkyl, n is 2 or 3 and R3 is hydrogen or C1-C6-alkyl. Specific inhibitors of ethylene biosynthesis or action include: {�(isopropylidene)-amino!oxy}-acetic acid-2-(methoxy)-2-oxoethyl ester, {�(isopropylidene)-amino!oxy}-acetic acid-2-(hexyloxy)-2-oxoethyl ester, {{cyclohexylidene)-amino!oxy}-acetic acid-2-(isopropyloxy)-2-oxyethyl ester (methoxy)-2-oxoethyl ester, �((isopropylidene)-amino!oxy acetic acid, aminooxyacetic acid, aminoethoxyvinylglycine, rhizobitoxine, silver ions (e.g. silver thiosulfate), and 2,5-norbornadiene. The plant growth retardants include: compounds with quaternary ammonium, phosphonium or sulphonium moieties such as mepiquat chloride and chloromequat chloride; compounds that contain a nitrogen containing heterocycle such as paclobutrazol, uniconazole and ancymidol; compounds such as acylcylohexanediones (e.g., trinexapac-ethyl and prohexadione-Ca) and daminozide. Low rate application of the methods and compositions are preferred.

Plant growth retardants in combination with inhibitors of ethylene

Provided herein is a plant growth regulator formulation comprising a plant growth regulator dispersed in polyvinyl alcohol ('PVA') particles having a mean diameter greater than 1 micron. The present invention also includes an emulsion containing an aqueous dispersion of PVA encapsulated plant growth regulator particles wherein said particles have a mean diameter greater than 1 micron. The above formulations are useful in methods of improving a plant growth factor in a plant.

Encapsulated plant growth regulator formulations and applications

The method of the invention provides for improvement of a plant growth factor by applying an ethylene inhibitor plant growth regulator to a plant, such as cotton or soybean, at a low rate. Specific plant growth regulators include compounds covered by the general formula: ##STR1## where R1 and R2 independently of one another are C1-C6-alkyl, n is 2 or 3 and R3 is hydrogen or C1-C6 alkyl. Specific compounds employed by the method of the invention include {�(isopropylidene)-amino!oxy}-acetic acid-2-(methoxy)-2-oxoethyl ester, {�(isopropylidene)-amino!oxy}-acetic acid-2-(hexyloxy)-2-oxoethyl ester, {{cyclohexylidene)-amino!oxy}-acetic acid-2-(isopropyloxy)-2-oxoethyl ester, �((isopropylidene)amino!oxy acetic acid and aminooxyacetic acid.

Growing community of inventors

Limburgerhof, Germany

Mary Callan