In modern agriculture, reducing fertilizers are the main objectives. Maize plant is an effective host of mycorrhiza in infertile conditions. In order to study effects of arbuscular mycorrhizal fungi (AMF) on phosphorus concentration (PC) and root colonization (RC) in maize (Zea mays L.), two field experiments were conducted in 2011 and 2012 (June 7th). The experiments were carried out split-plot factorial design based on randomized complete block design with three replications. Irrigation as the main plot was exerted in three levels; based on 70, 50 and 30% field capacity respectively. Mycorrhizal biofertilizer as the sub plot was applied in two levels; control and mycorrhizal biofertilizer application (100 kg ha-1). Phosphorus fertilizer as the sub plot was applied in three levels; 0, 75 and 150 kg ha-1 triple superphosphate respectively. The results of combined analysis showed that different irrigation treatments have significantly affected PC. The measured traits as affected by different irrigation regimes were decreased by increasing drought stress. Different P fertilizer levels and mycorrhizal biofertilizer have significantly affected PC and RC. Leaf P concentration and root colonization were increased and decreased by increasing P application respectively. AM plants have increased about 12% P concentration to their leaves compared with non-mycorrhizal.
کلید واژگان :Mycorrhiza, Drought Stress, Maize
ارزش ریالی : 600000 ریال
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