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Authors
Affiliations
1 Sugarcane Research Station, Bethuadahari 741 126, Nadia, West Bengal, IN
2 Department of Plant Protection, Institute of Agriculture, Visva-Bharati, Sriniketan 731236, Birbhum, West Bengal, IN
Source
Journal of Biological Control, Vol 24, No 3 (2010), Pagination: 288-290
Abstract
Root holoparasitic angiosperm, Aeginetia pedunculata (Roxb.) Wall. (Orobanchaceae) causes wilt disease in sugarcane around sugar factory areas at Plassey, West Bengal. Periodic surveys in the infected sugarcane plots revealed the occurrence of two insect herbivores, Spilosoma obliqua and Gonocephalum depressum and two fungal pathogens, Fusarium oxysporum and Erysiphe cichoracearum on A. pedunculata. It was estimated from field observations that these insect and fungal species reduced seed capacity of A. pedunculata by 25.1, 88.5, 80.0 and 50.9%, respectively. Though the insect species are polyphagous and the fungal pathogens are polytrophic in nature, these were found to reduce the seed production capacity of the ischolar_main parasitic angiosperm causing wilt disease in sugarcane. A suitable strategy for enhancing the activities of these agents in nature and studying the specificity of F. oxysporum and E. cichoracearum to A. pedunculata may lead to the management of this parasitic angiosperm in the sugarcane ecosystem.
Keywords
Sugarcane, Parasitic Weed, Aeginetia pedunculata, Spilosoma obliqua, Gonocephalum depressum, Fusarium oxysporum, Erysiphe cichoracearum.
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