Productivity of Wheat under Different Methods and Times of Potassium Application Grown in Sandy Soil

Egypt's primary food staple is wheat, and as the country's population to grow, wheat production must increase to meet the rising demand. In this regard, two field experiments were carried out at Rosetta City, El-Beheira Governorate conditions (Latitude: 30° 54' 36" N and Longitude: 30° 10' 27" E), Egypt, to study the effect of different methods and timing of application for potassium (K) on wheat (Triticum aestivum L. cv Sakha 95) during the growing seasons 2022/2023 and 2023/2024 seasons. The experimental design was a randomized complete block design (RCBD) in three repetitions in both seasons, where T1= One time, soil K application (K) with planting, T2=Twice, soil application of K with planting and with the first irrigation, T3= Three times, Soil application of K with planting, with the first and second irrigation, T4=One time, foliar application of K after 30 days after sowing (DAS), T5=Twice, foliar application of K after 30 and 50 DAS, T6=Three times, foliar application of K after 30, 50 and 70 days after sowing (DAS), T7= Soil application with planting + Twice, foliar application of K after 30 and 50 DAS, T8=Soil application with planting and the first irrigation + Twice, foliar application of K after 30 and 50 DAS, and T9=Soil application of K with planting and the second irrigation + Twice, foliar application of K after 30 and 50 DAS in both seasons. The findings result revealed that application of K as soil + foliar application enhanced wheat growth and yield characteristics significantly under the studied region conditions and the similar regions.