The effect of yield content on occurrence of early splitting in pistachio.
2008
Panahi, Bahman | Taj Abadi Pur, A`li | Esmaeili Rangbar, A`li | Zadeh Parizi, Reza | A`lavi, Hossein | Talaei, A`li Reza
Occurrence of hull cracks and early splitting could be affected by the yield content. This study was carried out in order to found probable relation between yield content on this kind of hull cracks from 2002 to 2005 for 4 years. In order to do evaluation and study, 10 of both "On"and "Off"trees of "Ohadi"in Kerman Pistachio Research Station were selected. On time of sampling, the total number of fruits per experimental tree was counted. Then, 10 fruit clusters were harvested randomly on sampling time and the samples were forwarded to laboratory in order to determine total number of fruits, early splitting percentage, irregular hull cracking percentage, yield fresh weight, yield dry weight, blank nuts weight, splitting percentage, nut ounce content, B1 and total aflatoxin content. Furthermore, by using of sieves with different sizes on their mesh, nuts were grouped to very small, small, large and very large and then ounce of these graded nuts were determined. A completely randomized design was used for evaluation of those characteristics and the means were compared by Duncan's test at 5% level. The results indicated that the evaluated characters in various experimental treatments, different experimental years of study and interaction between treatment type and year of study were significantly differed. Additionally, in this study they were cleared that characters like early splitting percentage, total number of fruits per tree, yield fresh weight, yield dry weight, blank nuts weight, splitting percentage and the contents of yield contamination to B1 and total aflatoxin were affected under the alternate yield bearing and their differences were significant. It was concluded that the yield content could be effective on occurrence of early splitting, but would not on irregular hull cracks.
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