effects of different concentrations of boron on concentration and distribution of this element and some other nutrients in hydroponic condition in two olive cultivars
نویسندگان
چکیده
boron toxicity usually occurs in arid and saline soils. among all the pollutant'sresource, irrigation water is the most important factor in boron elevating in the soil.modification of boron-rich soils is difficult and in this case, resistant varieties can playan important role in increasing the cultivation in areas with high boron level. to assessthe effects of different concentrations of boron on nutrient concentration and itsdistribution in olive plants, a factorial experiment was carried out in completelyrandomized design with six levels of boron (0,2, 10, 20, 30, 40 and 50 mg l-1) and twovarieties (konservolia and amygdalolia) with four replicates. results showed that withincreasing the levels of boron, the level of nitrogen, phosphorus, potassium and calciumdecrease significantly. with increasing of boron concentration to 50 mg l-1, nitrogenlevels decreased to 47% in amygdalolia compared to control. boron concentrations inall plant parts increased with increasing boron level in the nutrient solution. describeddiagnostic symptoms of boron toxicity were appeared 45 days after beginning of theexperiment in the concentrations of (30, 40 and 50 mg l-1) and in konservolia appeared75 days after beginning of the experiment in the concetrations of 40 and 50 mg l-1.
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عنوان ژورنال:
علوم باغبانی ایرانجلد ۴۵، شماره ۱، صفحات ۹۳-۱۰۱
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