Journal of the American Society for Horticultural Science · 1969 · 25 citations · 0 references
AgricultureCrop SciencesPlant SciencesPlant NutritionPlant PhysiologyVegetable ScienceNutrient Deficiency SymptomsNutrient UptakeNutrient Uptake By PlantsPotassium NutritionRoot NutritionSoil Nutrient AvailabilityAbsorption CapacityPlant Potassium NutritionPlant Potassium StatusPotassium Deficiency SymptomsPotassium Nutrition Of CropsPotassium RequirementSeedling RootstocksSoil Potassium Availability
Abstract The new mechanical-harvest varieties of tomatoes ‘VF-145’ and ‘VF-13L’ exhibited symptoms of K deficiency under both greenhouse and field conditions, while the older hand-harvested varieties remained free of symptoms. In the field the K-deficient varieties showed deficiency symptoms regardless of the amount of K applied to the soil. In late season the K concentrations in the petioles of the K-deficient varieties were much lower than in the other varieties. There were no differences between varieties in the rate or amount of K absorption from nutrient solutions. Root grafts indicated that there were no differences in the ability of the different rootstocks to absorb K.