Foliar Applications of Zinc and Boron on Fruit Set and Some Fruit Quality of Olive
Saadati S1,*, Moallemi N1, Mortazavi SMH1, Seyyednejad SM2
1Department of Horticulture, College of Agriculture, Shahid Chamran University of Ahvaz, Iran
2Department of Plant Physiology, College of Science, Shahid Chamran University of Ahvaz, Iran
*Corresponding author: Safoora Saadati, Department of Horticulture, College of Agriculture, Shahid Chamran University of Ahvaz, Iran, Tel: +989135766833; E-mail: email@example.com
The impact of foliar application of zinc and boron solutions on fruit set percentage, fruit physical properties and intake rate of the elements by leaf and fruit of three olive cultivars (‘Keylet’, ‘Coronaiki’ and ‘Mission’) were assessed. The spraying carried out twice at full bloom and 15 days later with zinc sulphate (2.5 kgm-3), boric acid (2.5 kgm-3) and the combination of these chemicals. The result indicated that the boric acid spray increased the initial fruit set (76.9%) while spraying with zinc sulphate + boric acid caused significant increase of final fruit set and number of fruit during the harvest (8.2% and 8%, respectively). The highest fruit length (2.08×10-2 m) was resulted from zinc sulphate application. No significant difference was observed between treatments on the fruit and pit length/diameter, length, diameter and weight of pit. Nutrient solution spraying significantly increased B and Zn concentration in leaf and fruit.