B. Gogoi , R. K. Borah

Abstract

Forest Fire, an anti environmental human activity, is becoming a great threat for eco restoration of Cherrapunjee-the site famous as wettest place on earth. Human's carelessness, negligence and ignorance are the main causes of annual ground fire resulting into pronounced and prolonged ill effect on climate, land use, land cover, biodiversity and forest ecosystem. There is an urgent need of fire management practices based on scientific technology, where emphasis should be given on people's participation through Joint Forest Management Programme.

Keywords

Wildgroundfire, Ill Effects, Management, Cherrapunjee

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Rajesh Kumar , Debu Moni Baruah , Ashwani Tapwal , R. K. Borah

Abstract

Verticillium dahliae was identified as a pathogen causing wilt disease of Polyalthia longifolia. It was isolated from the infected ischolar_mains of the seedlings collected from Central Forest Nursery of Imphal, Manipur, India. Four fungicides viz. Bavistin 50% WP, Dithane M-45, Dithane Z-78 and Fytolan 50% WP were screened against the pathogen at different concentrations using poison food technique in vitro and then in field-conditions using soil drenching technique. The results revealed that Bavistin 50% WP was most effective at 75 ppm with 100% growth inhibition followed by Dithane M-45, Dithane Z-78 and minimum efficacy was observed by Fytolan 50% WP with 31.27% growth inhibition in laboratory conditions. All selected fungicides were evaluated against pathogen in field conditions at 0.1% and 0.2 % concentrations. Bavistin 50% WP was found to be the most effective at 0.2% concentration. Thus the present study recommends soil drenching with Bavistin 50% WP at aminimal concentration of 0.2% for management of the disease.

Keywords

Verticillium dahliae, Wilt, Polyalthia Longifolia, Disease Management

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