Some Studies On Brown Stem Rot Of Soybean caused By Cephalosporium Gregatum

This work wsa designed to isolate and identify the causal organism to study some physiological factors on the growth of the isolated orgenism . the reaction of different soybean cultivars to the fungus, fertilization ,date of planting fungicides ,NPK conect of infected plants previously treated with different levels of NPK fertilizers also evaluated and histopathological studies took place to reveal some aspects of infection.