J. Amer. Soc. Hort. Sci.
Overtree misting for bloom delay reduced fruit set of 'Golden Delicious' apple (Malus domestics Borkh.) flowers hand-pollinated with 'Jonathan' or 'Golden Delicious' pollen in 1978, or open-pollinated or hand cross-pollinated with 'Jonathan' pollen in 1979. Misting did not affect fruit set of flowers that were open-pollinated in 1978 or self-pollinated in 1979. The number of seeds per fruit was not reduced. Soil Ca, Mg, pH and base saturation of Ca and Mg were in-creased, and flower and spur leaves contained lower concentrations of N, P, K, B, Mn, Fe, Zn, and Cu at either full bloom or petal fall as a result of misting. Foliar sprays of B increased B concentrations but did not influence fruit set on either misted or nonmisted trees.
Crassweller, R. M.; Ferree, D. C.; and Stang, E. J., "Effects of Overtree Misting for Bloom Delay on Pollination, Fruit Set, and Nutrient Element Concentration of 'Golden Delicious' Apple Tree" (1981). Co. Paper 165.
Available for download on Friday, January 01, 4500