Effects of potassium and iron applications on nutrient concentrations of tomato plants grown in soilless culture
The aim of this study was to investigate effect of K applications on plant Fe uptake and effects of K and Fe applications on mineral nutrition of tomato plants grown in soilless culture. Different combinations of potassium (150, 300, 450 mg L-1) and iron (1, 2, 3 mg L-1) ratios were evaluated. Results showed that N concentration of plant was increased by K application while iron applications were decreased. There were no effects of K and Fe applications on P, Ca, Mg, Zn, Mn concentrations of stem, and P, Mn concentrations of leaf. K concentrations of plant were increased by K applications. Fe concentration of plant was not affected by K applications. Leaf Ca and Mg concentrations decreased depending on K and Fe aplications. As a result, high level of K and Fe applications caused antagonistic effect on nutrient uptake and resulted in imbalance on mineral nutrition of tomato plants.
Okturen Asri, F. and Sonmez, S. 2016. Effects of potassium and iron applications on nutrient concentrations of tomato plants grown in soilless culture. Acta Hort. (ISHS) 1142:329-334
Lycopersicon esculentum, greenhouse, hydroponics, macronutrients, micronutrients