The present invention is directed to methods of improving stress tolerance, growth and/or yield in plants by applying an effective amount of a mixture of abscisic acid and malic acid to the plant.

The present invention is directed to methods of improving stress tolerance, growth and/or yield in plants by applying an effective amount of a mixture of abscisic acid and malic acid to the plant.

The invention provides a compound of formula I:

##STR00001##

wherein X, Y, Z, R′, R.sup.2, and X.sup.+ have any of the values described in the specification. The compounds are useful to increase plant growth and/or to increase harvest yield.

Systems and methods for application of active ingredients to plants such as cannabinoid-producing plants (e.g., plants in the genus Cannabis) are generally described. Certain aspects of this disclosure relate to systems for treating cannabinoid-producing plants (e.g., plants of the genus Cannabis such as those containing Cannabis sativa, Cannabis indica, or combinations thereof) involving fluidic communication between the plants and a source of a cyclopropene (e.g., in an enclosure). In some embodiments, cannabinoid-producing plants (e.g., plants of the genus Cannabis) are exposed to a cyclopropene (e.g., 1-methylcyclopropene in a gas phase). Some embodiments involve such exposure inducing potentially desirable phenomena with the plants, such as growth of male sex organs on female plants and/or enhancement of plant biomass.

Systems and methods for application of active ingredients to plants such as cannabinoid-producing plants (e.g., plants in the genus Cannabis) are generally described. Certain aspects of this disclosure relate to systems for treating cannabinoid-producing plants (e.g., plants of the genus Cannabis such as those containing Cannabis sativa, Cannabis indica, or combinations thereof) involving fluidic communication between the plants and a source of a cyclopropene (e.g., in an enclosure). In some embodiments, cannabinoid-producing plants (e.g., plants of the genus Cannabis) are exposed to a cyclopropene (e.g., 1-methylcyclopropene in a gas phase). Some embodiments involve such exposure inducing potentially desirable phenomena with the plants, such as growth of male sex organs on female plants and/or enhancement of plant biomass.

Disclosed are novel plant growth promoting formulations. The formulations of the present disclosure comprise microorganisms of the species Bacillus megaterium, Bacillus pumilus, Kribbella flavida, and Micrococcus luteus and can be used to promote plant growth and thereby reduce the time required to grow mature plants.

Whole cell based biostimulant compositions and methods for improving agricultural productivity the compositions including: a microbial consortium having gammaproteobacterial methanotroph. As a result of these methanotrophs, the biostimulant composition enables plant performance improvement, utilization of methane, and facilitates improved nitrogen fixation in plants. The composition also helps in reducing the need of external chemical fertilizers for plant growth, development, performance and/or survival.

Whole cell based biostimulant compositions and methods for improving agricultural productivity the compositions including: a microbial consortium having gammaproteobacterial methanotroph. As a result of these methanotrophs, the biostimulant composition enables plant performance improvement, utilization of methane, and facilitates improved nitrogen fixation in plants. The composition also helps in reducing the need of external chemical fertilizers for plant growth, development, performance and/or survival.

The present disclosure relates to protein hydrolysate based biostimulant composition derived from methanotrophic bacteria, and methods for enhancing agricultural productivity. In particular, the compositions disclosed herein comprise a protein-derived component in an amount of about 30% or less with respect to weight of the composition, wherein said protein-derived component is obtained from a methanotrophic bacterium. The present biostimulant composition finds applications in methods for improving plant performance along with methods for reducing the need of external chemical fertilizer-based inputs for plant growth.

The present disclosure relates to protein hydrolysate based biostimulant composition derived from methanotrophic bacteria, and methods for enhancing agricultural productivity. In particular, the compositions disclosed herein comprise a protein-derived component in an amount of about 30% or less with respect to weight of the composition, wherein said protein-derived component is obtained from a methanotrophic bacterium. The present biostimulant composition finds applications in methods for improving plant performance along with methods for reducing the need of external chemical fertilizer-based inputs for plant growth.