Provided herein are agricultural compositions, kits, and methods for improving crop productivity and enhancing plant phenotypes. Generally, the compositions and kits comprise an osmoprotectant and one or both of an anti-desiccant and an anti-respirant. Additional compositions and kits are provided that comprise an anti-dessicant and an anti-respirant. Further compositions and kits are provided that comprise a first osmoprotectant and a second osmoprotectant, the first and second osmoprotectants being different from one another. The methods provided herein generally comprise exogenously applying the agricultural composition to a plant.
