Majid Esmaeilizadeh; mohammadreza pourrajabi nejad; Hamid Reza Karimi; Aliakbar Mohammadi Mirik
Abstract
To investigative the effect of benzyladenine and eliminate of irrigation in winter on vegetative growthparameters and chemical composition of tree and nut quantitative characteristics of pistachio trees cv.Kaleh-Ghoochi, an experiment was done in 2010 to 2012 years. In this study, the effect of two irrigationregimes ...
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To investigative the effect of benzyladenine and eliminate of irrigation in winter on vegetative growthparameters and chemical composition of tree and nut quantitative characteristics of pistachio trees cv.Kaleh-Ghoochi, an experiment was done in 2010 to 2012 years. In this study, the effect of two irrigationregimes includes irrigation and non-irrigation in winter combined with three levels of benzyladenine (0,20 and 40 mg L-1) was investigated. The experiment design was randomized complete block design withthree replications. The data obtained from both experiment analyzed as the combined analysis. Irrigationtreatment was done as similar as common irrigation program in orchard, and in non- irrigation treatment,there wasn’t irrigation from January to April in both years. Application of benzyladenine treatment wasdone at inflorescence buds swollen time. The results showed, 40 mg L-1 benzyladenine had the mosteffective on vegetative growth of trees compared with the other treatments. Also benzyladeninetreatments compared with the control had significant increase in the ecophysiological parameters; leavesbiochemical compounds contents, leaves nutrient elements concentration and caused reducing inpercentage of early splitting fruit and bud abscission significantly. Also, results showed that eliminationof irrigation in winter had no significant effect on the mentioned parameters. Thus, based on the results ofthis study it seems that elimination of winter irrigation doesn’t have any effect on vegetative growth anddevelopment of pistachio tree, but application of BA in late winter has positive effects.