Bioefficacy of plant extract on Alternaria leaf spot of soybean (Glycine max (L.) Merr)

Shrikant B. Bhosale; D.S. Jadhav; Ashok M.Chavan; B.Y. Patil

Volume : IV, Issue : XI, November - 2014

Bioefficacy of plant extract on Alternaria leaf spot of soybean (Glycine max (L.) Merr)

Shrikant B. Bhosale, D. S. Jadhav, Ashok M. Chavan, B. Y. Patil

Abstract :

Soybean is the most important oil yielding, leguminous and pulse producing crop. It is grown in both kharip and rabbi season. Infected leaf samples of soybean were collected from the different regions of Marathwada directly on the field. Samples collected in gunny (polythin) bags. Samples were ought in the laboratory. Fungal species isolated by Agar plate (9cm) method. PDA (Potato dextrose agar) used for the isolation. In present studies near about 9 fungal species were isolated which are A.flavus, A. niger, F. oxysporum. F. solani, C. sojina,C. kikuchii, Alternaria alternata, Phoma spp Tricoderma spp etc. But Alternaria leaf spot is the major disease of the soybean causing severe damage to the leaf. Spraying of most of the synthetic fungicides created different types of environmental, biodiversitycal and ecological problems. Treatment gives to petridis contenting Alternaria alternata of different concentration of angiospermic plant extract (10%, 15% &amp;amp; 20%) Allium sativum and Allium cepa ought about significant reduction in disease intensity caused by Alternaria alternata leaf spot on the soybean crop. Angiospermic plant extract have bioefficiency to reduction the incidence of disease in soybean crop. Pharmacologists, doctors, plant pathologist&amp;rsquo;s works on the development of an interesting lead compound into an exploitable product by the plant.