RESPONSE OF APRICOT TREES FOR SPRAYING BY ANTIOXIDANTS COMPOUNDS AND FOLIAR FERTILIZERSShaimaa Sabbar Metep and Ahmed Mohammed Hasan
The study was conducted on apricot trees, variety Zaghenia aged 15-20 years in the Karbala govern, Huseeinia during the growth season 2018-2019. It included spraying of the foliar fertilizer Oligo Azoren Mix contained a group of nutritional microelement as well as magnesium at two concentrations (0 and 1.5 mg.L-1). The study also included antioxidants consisted of Propyl Gallate at two concentrations (200 and 300 mg.L-1) and ascorbic and citric acids at two concentrations (500 and 1000 mg.L-1) of each, in addition to the control treatment of spraying just water. The study was conducted according to the Randomized Complete Block Design (RCBD) as a factorial (2*7) experiment of three replicates for each treatment. The results can be summarized as follows. The concentration 1000 mg.L-1 gave significant increments in most studied traits including leaf area, chlorophyll content, carbohydrate amount, fruit set percentage, fruit size, and tree yield. Propyl Gallate achieved the best increment at the lower concentrations compared to the other study factors where its concentration 200mg.L-1 enhanced the two traits, leaf area and carbohydrate amount and the concentration 300 mg.L-1 enhanced the traits chlorophyll content, fruit set percentage, and fruit, The foliar fertilizer significantly affected some studied traits included carbohydrate amount and tree yield.