Effect of Nano Phosphorus and Potassium Fertilizers on Productivity and Mineral Content of Broad Bean in North Sinai

Abstract

A field experiment was carried out in winter season 2019 using broad bean. This study is to evaluate the effect of P and K as Nano fertilizes as foliar application at rate 0, 250 and 500 ppm for P, and 0, 150 and 300 ppm of K on thegrowth and the productivity of broad bean grown in sandy soil at Baloza Station-North Sinai of the Desert Research Center, Egypt, located at 31 3ʹ 0 N32 36ʹ 0 E. The treatments (P) and (K) were added as foliar spray after 25, 50 and 75 (DFS). Results indicated that the yield components of broad bean were improved with increasing P application. The K application took the same behavior of P where the spraying 500 and 300 ppm of P and K respectively, showed the higher effect on the yield parameters than the other levels. The nutrients concentration increased with increasing rates application of P and K which gave higher values than control treatment. Also N, P and K uptake had the same behavior as nutrients concentration where they affected significantly by spraying plants with P and K. The most efficient treatment was found when using the third rate of both nano P and K fertilizers which achieved 2.457, 1.470 and 3.927 ton fed-1 of straw, seeds and biological yield of broad bean, respectively. With increasing foliar application nano fertilizes of P and K single or in combination slightly increased the amount of N, P and K in soil after harvesting.