EFFECT OF SOME ORGANIC COMPOUNDS ON EGYPTIAN COTTON PRODUCTIVITY

Abstract

: Two field experiments were conducted on a clay soil at El-Gemmeiza Agricultural Research Station, El-Gharbia Governorate, Egypt during 2016 and 2017 seasons, to study the effect of foliar spraying with three organic acids (propionic, citric and ascorbic acids) and potassium citrate in mixture (two portions potassium citrate, one portion propionic acid, one portion citric acid and one portion ascorbic acids), where three rates of the mixture (4, 8 and 10 g/L) were foliar spraying two times ( at start of flowering and top of flowering) and three times (during squaring stage, start of flowering and top of flowering) in compared to control (untreated plants) on cotton growth, earliness traits, seed cotton yield and its components of Giza 86 cotton cultivar. The experimental design was a randomized complete block design with four replicates. The important results could be summarized as follows: squaring stage, start of flowering and top of flowering) as compared to the other treatments.