EFFECT OF SOIL AND FOLIAR POTASSIUM FERTILIZATION ON YIELD OF CANTALOUPE PLANT IN SANDY SOIL

Document Type : Researches

Authors

Dept. Plant Prod. (Veg.), Fac. Environ. Agric. Sci., Arish Univ., Egypt.

Abstract

This study was carried out on cantaloupe plants (Cucumis melo L. cv ‘Gal152’ (during the winter growing seasons of 2019-2020 and 2020-2021 at a private vegetable farm located on Abo El-Dahab region, Abo-Khalifa vallage, Ismailia Governorate, Egypt. The seedlings at age of 17 days were transplanted on 25th December in mulched low plastic tunnels under sandy soil conditions to study the treatments which were combinations among three soil applications of 80 units of K2SO4 doses rates (100%, 75%, and 50%of recommended potassium requirements) and spraying four foliar potassium sources (Potassium Silicate, K-Sili; Potassium Citrate, K-Citr.; Potassium Acetate, K-Acet.; Potassium Thiosulphate, K-Thio.; and water spray as control) on cantaloupe. So, this study included fifteen treatments. The highest-grade A yield value was recorded by each of T100%× k-Citr treatment without significant differences followed by T75%× k-Citr, T100%× K-Sili, T100%×without spray, and T75%× without spraying treatments in the second season. The highest marketable yield value was recorded by each of T50%× k-Acet treatment, without significant differences than T50% × K-Sili and T100% × without K-spray in first season and T100% × without K-spray, T75 × k-Acet, T50% × k-Thio, and T50% × k-Citr treatments in second season. The highest total yield was recorded by the treatment of T100% × without k- spray (2.48kg/m2, 10.42 ton. /fed.) and T50% × K-Sil without significant differences between them in first season, while in second season, the highest total yield was recorded by the treatment of T100% × without k- spray (2.80 kg/m2,11.76 ton./fed.)  T50% × k-Acetate; T50% × K-Sili; and T75% × k-Acet  without significant between them.

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