Distribution of Nutrients in Snap Bean Plant Organs as Affected by N, P and K Fertilizer Levels

Abstract

A pot experiment was planted at the experiments Farm at Mansoura University Faculty of Agriculture, during the summer season of 2015 to monitor the effect of various levels of nitrogen (N), phosphorus (P) and potassium (K) fertilizers treatments on plant vegetative parameters, yield and NPK % in organs (root, stem, leaves and grains) of snap bean plant. The trial was hold out in a complete randomized block design (CRBD) with three replicates. The results revealed that application of different levels of NP and K fertilizers have a significant effect on growth parameters, yield components, chlorophyll a, b and total and concentration of N, P, K, iron, copper and zinc in different organs (root, stem, leaves and grains) of snap bean plants. All studied parameters increased by increasing the application rates of N, P and K fertilizers from zero to 150% from the recommended dose. Concentration of NPK in the leaves and grains of snap bean plant were significantly increased with increasing the NPK levels. On the different of this tendency; the mean means of NPK concentration were significantly decreased with increasing NPK levels in the roots and stems of snap bean plants. Also, the values of all the investigated micronutrients were significantly increased with increasing the NPK levels up to the level of 100% from recommended doses. More addition of NPK at the rate of 150% from recommended doses of NPK significantly decreased the average values of these micronutrient under those obtained from the plants treated with 100% from recommended doses of NPK. The distribution of macro-and micronutrients in the snap bean plant can be arranged in following order stems < roots < grains < leaves.