Arbuscular mycorrhizal fungi (AMF) play significant roles in enhanced uptake and transport of immobile nutrient, improve water relation, control plant disease by reducing pathogenic fungi, reduce environmental stresses etc. Legumes are important agricultural crops in Bangladesh. These crops are usually grown in non-irrigated, poor nutrient conditions. Many soil borne pathogens are causing different types of diseases of the crops. The inoculation of AMF with legume crops in Bangladesh may be a suitable technology for growth improvement, nutrient uptake and suppression of soil borne diseases. The present research programme was conducted in Sher-E-Bangla Agricultural University, Dhaka and Chittagong University, Chittagong under a USDA funded project. We are grateful to the authorities to provide us facilities and USDA for financial assistance.

Effect of different grades of black pointed seeds on leaf blight severity and healthy seed production of wheat was conducted in field conditions. The grades were; 0= apparently healthy looking seeds (Free from infection), 1= only embryo blackish, 2= embryo and its adjacent area slightly infected, 3= embryo and less than 1/4 of grains are discolored, 4= embryo and 1/2 of grains are infected and 5= grains are shriveled, almost completely discolored or more than 1/2 of grains are discolored. Seedling emergence and vigor index were significantly decreased with the increase of severity grades of black pointed seed. Significantly highest and lowest leaf blight severity was recorded on the plants raised from grade 5 seeds and grade 0 seeds respectively. The highest 1000 seed weight and grain yield was recorded from the plots where apparently healthy seeds were sown. The apparently healthy seeds (grade 0) increased 29.69% grain yield over grade 5 seeds. Findings of the present study emphasized the sowing of physically sorted apparently healthy looking seeds to minimize leaf blight severity and increasing quality yield of whea