Impact of Phosphorus Fertilizer and Potassium Humate on the Productivity and Nutritional Status of Pea Plants Irrigated with Saline Water

Abstract

Two field experiments were carried out in consecutive winter season of 2022 and 2023 at the Research and Production Station of the National Research Centre at the Nubaria site in Beheira Governorate, Egypt, to determine the response of pea (Pisum sativum L.) to foliar application of humic acid and phosphorus fertilization on growth, yield parameters and nutrients content of pea plant. Phosphorus fertilization rates (0, 38, 76 and 114 P2O5 kg ha-1) were used as the main factor, while K-humate concentrations (0, 1000 and 2000 mg l-1) were used as a second factor. The results demonstrated that applying phosphorus fertilizer and spraying K-humate had a substantial impact on growth and production. The growth and yield of peas in two consecutive growing seasons were impacted by increasing the rate at which K-humate at different concentrations was applied while also increasing the rate at which phosphorus fertilizer was applied. For the pea growth and yield coordinates, the experimental treatment (K-humate at 2000 mgl-1 + 114 kg P2O5 ha-1 of phosphorus fertilizer) received the greatest values. The nitrogen, phosphorus, and potassium content of pea seeds increased as the concentration of K-humate spraying increased. The study's findings highlight the significance of phosphorus fertilization and show that applying K-humate spray to plants while they are growing can boost the fertilizer's efficacy and impact on pea plants that are irrigated with salty water.