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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
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