The response of Ceratonia siliqua L. Seedlings to oliar spray with different levels of Gibbrellic acid and Boron .

Abstract

This experiment was conducted in accordance with randomized complete block design in the waterfalls area to the Nineveh Plain during the season of 2012 to study the effect of four concentrations of Gibberellic acid solution and boron as foliar spraying in the growth of Ceratonia siliqua L. seedlings . Seedlings were sprayed until full wet early in the morning for GA3 in four levels (0,100,200 and 300 mg.L-1) in the evening splashed with four levels of boron (0,10,20 and 30 mg.L-1) using boric acid (17% boron) at a rate of three interval in first day of April, May and June 2012 . Results that were collected in mid – October show significant superiority of Gibberellic acid treatment (300 mg.L-1) and boron (30 mg.L-1) each individually in increasing the diameter of the main stem , leaf area , the length of main root , dry weight of shoots , and amounts of total chlorophyll in leaves compared to other treatment , Interaction of GA3 (300 mg.L-1) and boron (30 mg.L-1) was superior in leaf area and leaves content of total chlorophyll . The interaction between 300 mg.L-1 GA3 and 10 mg.L-1 boron caused a significant in creases in the diameter of the main stem the length of main root and dry weight of shoots .