ISHS Acta Horticulturae 383: Mineral Nutrition of Deciduous Fruit Plants
YIELD AND MINERAL STATUS OF A KIWIFRUIT ORCHARD SUPPLIED WITH SLOW-RELEASE FERTILIZERS |
| Authors: | F. MONASTRA, G. STRABBIOLI, E. TURCI, M. CAPPELLONI |
| Keywords: | nitrogen, phosphorus, potassium, slow-release fertilizers |
| Abstract:
The potential risk of nitrate leaching after fertilizer addition to the soil may be reduced through the use of slow-release fertilizers. Kiwifruit has high mineral requirements to assure good yield and fruit quality, therefore there is a need to verify wheter slow-release fertilizers may be succesfully used in kiwi orchards. The experimental trial lasted two years and was conducted on mature kiwi vines supplied with traditional fertilizers, commercial slow-release fertilizers (Nitrophoska gold) and not-commercial fertilizers characterized for different times of release of N and for having P and K in slow-release formulas. The obtained results indicate that cumulated yields and leaf N were highest with fertilizers releasing N within few months from application (e.g. Nitrophoska gold), while those releasing N in longer times reduced yields and depressed mineral status of plants. | |
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