ISHS Acta Horticulturae 564: IV International Symposium on Mineral Nutrition of Deciduous Fruit Crops
THE EFFECTS OF CHEMICAL SPRAY ON THE QUALITATIVE AND QUANTITATIVE CHARACTERISTICS OF "ZARD" OLIVE FRUITS |
| Authors: | M. Taheri, A. Talaie |
| Abstract:
This research was carried out to study the effects of Nitrogen(N), Boron (B), and Zinc(Zn)spray on the qualitative and quantitative characteristics of olive(Olea europaea) fruits and the leave nutrient composition of olive “Zard” cv. A completely randomized block design with eight nutritional treatments consisted of local mature olive trees during the bearing years in this experiment. N, B, and Zn concentrations in soil of the experimental ground were 0.08%, 0.34 mg.kg-1 and 0.72mg.kg-1 respectively. The chemicals were applied one week before full-bloom, using Urea, Boric acid and ZnSo4 with 0.5%. Fruit characteristics indicating fruit weight, fruit seed weight, fruit length and width, fruit oil content, SSC, shotberry fruits number, and fruits and leaves concentration were evaluated The results indicated that Urea spray increased the fruits weight. B spray decreased the shotberry fruits and increased the fruit seed weights. But there was no effect on the oil content, SSC and fruit length and width. Foliar nutrition had no effect on N, P and K contents of leaves and fruits but B and Zn spray had significant effect on the concentration of these elements in leaves and fruits. There was positive significant correlation between leaves K concentration and fruit size and weight, and between fruits Zn content and oil percentage. | |
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