Effect of inoculated AMF on red clover in utilizing organic phosphorus

In order to study the role of AMF(Arbuscular Mycorrhizal Fungus) hyphae in absorbing phosphorus from organic phosphorus sources, a pot experiment was carried out under controlled conditions. The pot consists of three compartments. The root compartment was separated from the hyphal compartment by a nylon net with 30 m mesh . Red clover were grown in the root compartments inoculated or uninoculated with AM fungus Glmous versiforme. Different organic phosphorus sources were added uniformly in the hyphae compartments except for the control treatments in which no phosphorus was added. The results showed that mycorrizal infection significantly increased phosphorus uptake of red clover from different phosphorus sources and growth of plants. Inorganic phosphorus (KH2PO4) had better effect on growth of plants than organic phosphorus, but no significant differences lie in all inoculated treatments. The results obtained clearly demonstrated that efficiency of AM hyphal in utilisation of organic phosphorus by red clover. Plants inoculated with AMF were effective in the hydrolysis of organic phosphorus and confirmed the important direct contribution of AM hyphae to plant P nutrition.