A method for systemically mitigating environmental stress from heat or radiation on a fruit plant and the pre-harvested fruit thereof that comprises the steps of: preparing an agricultural composition wherein the composition comprises an ethylene oxide-propylene oxide block copolymer, a C1-C4 alkyl ether of ethylene oxide-propylene oxide block copolymer, and an alkyl polyglycoside and intimately contacting root zone soil of soil containing a fruit plant with a bioefficaciously effective amount of the agricultural composition to systemically mitigate environmental stress on the plant and the pre-harvested fruit thereof from heat or radiation impacting the surface of the plant or fruit above the surface of the soil, whereby the agricultural composition is not substantially absorbed into the plant.
