Journal of the American Society for Horticultural Science · 1974 · 11 citations · 0 references
AgricultureAgronomyHorticultural SciencesFruit ScienceNutrient ManagementPlant NutritionFruit NutritionFruit PhysiologyFruit QualityFruit StorageMineral NutritionNutrient AvailabilityCalcium Physiology In FruitFruit Mineral ContentFruit Mineral NutritionFruit Nutrient ChangesMineral Uptake In FruitsNutrient Solution ManagementNutrient Uptake SeasonalityPlant Calcium Availability
Abstract Apple trees, Malus domestica Bork., cv. Spartan, were grown in pots of quartz sand supplied with nutrient solutions and treated with 8, 4, 2 or 1 meq/1 Ca with all other nutrients constant. Fruit was stored and analyzed for 3 years. Twenty-five percent of the fruits from the 1 meq/1 Ca treatment developed senescent breadown of the flesh after storage but only 1% were affected from the 8 meq/1 Ca treatment. Three-year average Ca concentration in the fruit ranged from 131 ppm in the 1 meq/1 Ca treatment to 178 in the 8 meq/1 Ca treatment. Incidence of breakdown increased through the storage season from October until April when little further increase occurred through June. Magnesium and K concn in the fruit increased with decreasing Ca supply in the nutrient solution.