Abstract

Purpose: Considering the rising production costs and the increasing occurrence of drought in rainfed land cultivation, in line with the need to find a solution to increase production and reduce costs, this research was conducted in Kermanshah to manage balanced and optimal nutrition of agricultural products in rainfed fields for sustainable production as one of the principles of crop cultivation and optimal supply of nitrogen and potassium required by wheat during critical stages of absorption.

Methodology: A research project was conducted in farmers' fields with two treatments: 1- control or without foliar spraying and 2- foliar spraying of Royal Amine + Royal Potassium, each at a rate of one liter per hectare at the end of the stem-growing stage in two regions of Sahneh and Ravansar, Kermanshah province, on the rainfed wheat variety Rizhav in farmers' fields in the 2019-2020 crop year.

Findings: Foliar application of nutrientsat the end of the tillering stage led to an increase in grain yield and quality indicators such as gluten content in rainfed wheat.

Conclusion: The results showed that, 960 kg/ha in Ravansar and 1,434 kg/ha in Sahneh, representing increases grain yield of 110 kg/ha and 137 kg/ha, respectively (an average of 9.6%) compared with the control. The foliar treatment also improved grain quality indices, including total gluten content and gluten index in both regions. Additionally, it increased the falling number by 7–16%