ABSTRACT
Pot experiments were carried out to investigate the effect of sprays with GA [100 ppm], Zn at two doses [75 and 100 ppm] and a combination of both on Ocimum basilicum plants grown in two types of soil. The results revealed that soil type had no effect on plant height, branches number and fresh weight of the herb at the first and second cut, meanwhile, the third cut of the basil plants grown in sandy loamy soil surpassed the corresponding grown in calcareous soil. GA-treatment increased growth characters and carbohydrate content in both soils but oil content only in sandy loamy one. Combined treatments of GA and Zn gave the highest values of herb yield, carbohydrate and oil content compared with other treatments. Data obtained from interaction treatments showed that the combination between GA and Zn [75 ppm] gave the best results under calcareous conditions