Effect of Foliar Application with Manganese and Zinc on Pomegranate Growth, Yield and Fruit Quality
This study was carried out at a pomegranate orchard, Horticultural Station Al-mahaweel, in the province of Babylon during 2010 and 2011 growing seasons. It was aimed to investigate the influence of spraying manganese and zinc solutions on 12 years old trees of Salemy pomegranate cultivar. This study included two factors; manganese (Mn) and zinc (Zn) wich done in the last week of May and first week of June in both seasons. Manganese was applied with four levels i.e., 0 (Mn0), 20 (Mn20), 40 (Mn40) and 60 (Mn60) mg/l. Whereas, Zinc was applied at 0 (Zn0), 1.5 (Zn1.5), 3% (Zn3). Each treatment replicated three times with a factorial experiment using RCBD. The number of trees used was 36 trees. The obtained results showed that 60 mg/l manganese with 3% zinc recorded the highest leaf area (5.43 and 5.69 cm2), chlorophyll content (56.12 and 56.26, SPAD unit), fruit set (49.34 and 50.55%) and the highest fruit weight (188.88 and 187.97 g) in the first and second seasons, respectively. Whereas, the lowest values of these parameters were recorded with control treatment. Also, Mn60 with Zn3 gave the lowest value of splitting fruit (15.67 and 15.60 %) in the first and second seasons,respectively. Finally, we recommended conducting these treatments annually and apply advanced study on the effect of these elements in the other dates on the pomegranate cvs.