Effect of foliar spray of Zn, Ga3 on transplants growth of olive (Olea europaea L.)‎ cvs. Baeshike and Nebali

الملخص EN

Olive transplant( Nebali and Baeshike cultivar) were sprayed four times during the seasons 2008 and 2009 with three levels of Zn(0, 25and 50 mg.l-1) in the form of ZnSO4.7H2O, and four levels of GA3 (0, 500, 1000 and 1500 mg.l-1).

To study the effect of Zn and GA3 on vegetative, and root growth of one year old of two olive cultivars.

The transplants were left under nursery conditions till 20 June, 2009.Results indicate that nebali cultivar significantly dominated Baeshike cultivar in stem length, leaf area, total chlorophyll percentage, shoot root ratio, root number per transplant.

Stem length, stem diameter, number of primary branches were significantly increased with the increase of Zn levels to 25 mg.l-1, while total chlorophyll percentage, shoot root ratio were significantly increased with the increase of Zn levels up to 50 mg.l-1.

Foliar of GA3 at 500mg.l-1 significantly increased stem length, diameter, number of primary branches per transplant, root number per transplant.

Increasing GA3 level up to 1000 mg.l-1 significantly increased leaf area, shoot root ratio, total chlorophyll percentage.

Most of the interactions (cultivar × Zn, cultivar × GA3 and Zn × GA3) showed significant effects on the most characteristics studied.