Study on the effects of foliar application with N, B and Zn on qualitative and quantitative characteristics of grapes C.V Askari in Kohgiluyeh - Va- Boyerahmad province.
2004
Chakeralhosseini, Mohammad Reza | Kavousi, Bizhan | Rad, Ardeshir | Saeedi, Karim | Nejati, Karam | Khosravi, Masoud
Optimum application of essential nutrients for grape would cause an improvement in the yield and quality of grapes. Today due to imbalance application of urea and ammonium phosphate in orchards, in the odder hand excessive amount of CaCo3, high pH and deficiency of organic matter, in this soils observe deficiency of micronutrient so born and zinc. In order to study the effects of foliar application of N (urea), B (boric acid) and Zn (zinc sulfate) on qualitative and quantitative characteristics of grape, a completely randomized block experiment was carried out with towelve treatments and three replication in the two vineyards of Servak and Sisakht regions. The fertilizer treatments as a foliar spray applied at one week before of full bloom and also at the time of fruit set. Results showed that mean of yield was significant differences (at 1% level) in all applied treatments in two regions. The highest yield of 19 ton/ha at Servak was obtained with complex treatment of urea (0.5%), Zinc sulfate (0.3%) and boric acid (0.3%). At Sisakht the highest yield of 21.4 ton/ha was obtained with complex treatment of Zinc sulfate (0.3%) and boric acid (0.3%). The analysis variance of nitrogen, boron and zinc concentration at the leaves showed that the effect of applied treatments on these factors was significant and increased them. Investigation of the analysis variance of fruit set percent indicated that applied treatments were caused significant increase it.
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