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The Effect of the Foliar Application of Potassium, Calcium, Boron and Humic Acid on Vegetative Growth, Fruit Set, Leaf Mineral, Yield and Fruit Quality of 'Anna' Apple Trees

EngineeringBotanySustainable AgricultureAgricultural EconomicsHumic AcidHorticultural SciencePost-harvest PhysiologyApple TreesPlant PhysiologyFoliar ApplicationCrop Quality