Influence of Foliar Application of Nitrogen and Cytokinin in the Quantity Characteristics and Quality of the Okra Plant (Abelmoschum esculentus L. (

Abstract

Abstract: The search was conducte at in the fields college of Agriculture , University of Baghdad to examine the influence of foliar application of nitrogen and cytokinin in the quantity characteristics and quality of the Okra Plant cv.Betera during the season of 2016 . The search as an experiment was design as factorial according to the Random Complete Block statistical design (RCBD) at three replications which include two factors : the first was adding urea directly to the soil at 182 kg.Ha-1 (universally recommended) as control treatment in addition to spraying with three levels of nitrogen at 1000 , 3000 and 5000 mg.L-1 which designated (N0 , N1 , N2 and N3) , respectively . The second factor was spraying with three concentration of cytokinin at 0 , 10 and 20 mg.L-1 which designated (CK0 , CK1 and CK2) , respectively . Means were compared following the least significant differences (LSD) at 5% level of significance . The results were as follow :1- A significant effect was noticed regarding the different levels of nitrogen and cytokinins in most growth traits under investigation where the 3000 mg.L-1 nitrogen foliar application significantly increased the number of secondary branches , leaf area , N percentage in leaves , total Production , quantity vitamin C and fruit protein percentage when compared with other treatments . In addition , recorded where plants sprayed with 20 mg.L-1 cytokinin significantly increased the number of secondary branches , leaf area , total Production , quantity vitamin C , fruit protein percentage compared with other treatments , recorded the control treatment gave a rise of N in leaf tissues and the fruit’s fiber percentage when compared with the other treatments. 2- As for the interaction , a significant effect was also observed in term of tested when the 3000 mg.L-1 N and 20 mg.l-1 cytokinin treatment scored the highest in the number of secondary branches and quantity vitamin C in fruits when compared with the other treatments , recorded where plants While spraying with 3000 mg.l-1 N and 10 mg.l-1 cytokinin gave the highest leaf area and total Production , recorded where plants sprayed with 5000 mg.l-1 N and 0 mg.l-1 cytokinin’s treatment the highest percentage in N content , However , the foliar application of 3000 mg.L-1 N with 0 mg.L-1 cytokinin significantly increased the fruit content of protein in comparison with the other treatments , Subsequently , treatment with 1000 mg.L-1 N and 0 mg.L-1 cytokinin significantly increased the fruit’s fiber percentage when compared with the control.