ISHS Acta Horticulturae 470: II International Symposium on Pistachios and Almonds
PISTACHIO NUT IRON DEFICIENCIES ON CALCAREOUS SOILS |
| Authors: | H. Tekin, S. Arpaci, Y. Yukceken, I. Cakir |
| Keywords: | Fertilizer, iron deficiency, pistachio nut, Gaziantep |
| Abstract:
This study was carried out to determine the effect of different iron levels on fruit quality of pistachio nut and also to determine the optimum application rate of iron in pistachio orchards, which have high levels of lime and exhibit widespread leaf chlorosis. The study was carried out in the Yolcati village of the Nizip district in Gaziantep during 1994–1996. Results indicated that three applications of iron sulfate at a concentration of 55 ppm and pH of 3 was the most effective foliar spray. This treatment was also the least costly solution to the iron deficiency problem. Soil application of 4 to 6 kg per tree iron sulfate was also effective and it was cost effective. Soil application of Fe-EDDHA and foliar application of Fe-EDTA were very effective, however these treatments were very expensive. There was a positive correlation between Fe levels and the weight of 100 nuts. However, there was no relationship between Fe level and split percentage or kernel percentage. An application rate of 6 kg per tree iron sulfate increased split percentage and kernel percentage compared to other methods. | |
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