Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal / N.K Dangal    

Public ISBD in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.     Title : Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal Material Type: printed text Authors: N.K Dangal, Editor ; P Joshi ; D.L. Mandal, Author ; Chaudhary, R.N., Author ; Chaudhary, B.N., Author Pagination: 318-321 p. Keywords: Bio-control  agent  cercospora  zeae  maydis  ;  disease  severity  scory  yield Abstract: Grey leaf spot (GLS), caused by Cercospora zeae maydis, is a major disease of maize in the eastern hills of Nepal. It is also becoming a threat to maize cultivation in the western hills ofthe country. A field experiment was conducted during 2011 and 2012 in the eastern mid hills of Nepal to identify the effective pesticides for management of the disease. The experiment was conducted in Diktel, Khotang at 1400 mas) under natural incidence of grey leaf spot disease. The experiment was conducted in a randomized complete block design with 3 replications. Local variety of maize was planted in a plot of 9 m2 • Five pesticides including bio-control agents were evaluated along with a control (water spray) for their efficacy in the management of grey leaf spot of maize. The treatments were Metalaxyi+Mancozeb, Carbendazim, Copper oxychloride, Pseudomonas+ Trichoderma and Pseudomonas, The pesticideswere applied after the appearance of the disease at silking stage. Disease scoring was done at 15 days after spraying. Pesticides and bio-control agents differed significantly in controlling the target disease and producing higher grain yield. Carbendazim and Metalaxyi+Mancozeb were equally effective in lowering disease severity (45 .53 and 46.87%). Use of Copper oxychloride (48.33%) was similar to use of Pseudomonas+Trichoderma (54.17%) in minimizing disease severity. All chemicals and bio-control agents were superior to control in managing grey leaf spot and producing higher grain yield. Application of Carbendazim produced the highest grain yield (3.84 tlha) followed by Metalaxyl+Mancozeb (3.80 tlha) and Copper oxychloride (3.66 t/ha).The control plot recorded the highest disease severity of 61.53% with production of the lowest grain yield of 3.03 t/ha. Thus, incidence and severity of the grey leaf spot disease can be minimized with higher grain production of maize by the use of pesticide Carbendazim in the disease prone areas of eastern hills. Link for e-copy: http://elibrary.narc.gov.np/?r=961 in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.     Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal [printed text] / N.K Dangal, Editor ; P Joshi ; D.L. Mandal, Author ; Chaudhary, R.N., Author ; Chaudhary, B.N., Author . - [s.d.] . - 318-321 p. Keywords: Bio-control  agent  cercospora  zeae  maydis  ;  disease  severity  scory  yield Abstract: Grey leaf spot (GLS), caused by Cercospora zeae maydis, is a major disease of maize in the eastern hills of Nepal. It is also becoming a threat to maize cultivation in the western hills ofthe country. A field experiment was conducted during 2011 and 2012 in the eastern mid hills of Nepal to identify the effective pesticides for management of the disease. The experiment was conducted in Diktel, Khotang at 1400 mas) under natural incidence of grey leaf spot disease. The experiment was conducted in a randomized complete block design with 3 replications. Local variety of maize was planted in a plot of 9 m2 • Five pesticides including bio-control agents were evaluated along with a control (water spray) for their efficacy in the management of grey leaf spot of maize. The treatments were Metalaxyi+Mancozeb, Carbendazim, Copper oxychloride, Pseudomonas+ Trichoderma and Pseudomonas, The pesticideswere applied after the appearance of the disease at silking stage. Disease scoring was done at 15 days after spraying. Pesticides and bio-control agents differed significantly in controlling the target disease and producing higher grain yield. Carbendazim and Metalaxyi+Mancozeb were equally effective in lowering disease severity (45 .53 and 46.87%). Use of Copper oxychloride (48.33%) was similar to use of Pseudomonas+Trichoderma (54.17%) in minimizing disease severity. All chemicals and bio-control agents were superior to control in managing grey leaf spot and producing higher grain yield. Application of Carbendazim produced the highest grain yield (3.84 tlha) followed by Metalaxyl+Mancozeb (3.80 tlha) and Copper oxychloride (3.66 t/ha).The control plot recorded the highest disease severity of 61.53% with production of the lowest grain yield of 3.03 t/ha. Thus, incidence and severity of the grey leaf spot disease can be minimized with higher grain production of maize by the use of pesticide Carbendazim in the disease prone areas of eastern hills. Link for e-copy: http://elibrary.narc.gov.np/?r=961

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Evaluation of wheat varieties for yield and disease resistance at Regional Farmers Field Trial in the Eastern Terai Region of Nepal / P Joshi ; S. Manandhar ; N.K Dangal ; B. Chaudhary ; R. Bhattarai ; Yadav, Y.P. ; Ang Tenjing Sherpa ; D.P Shrestha ; M. Ojha ; S.S. Vishwakarma ; B.B. Masrangi ; B. Raut ; Chaudhary, B.P.    

Public ISBD in Proceedings of the 11th National Outreach Workshop 9-10 June 2014 (26-27 Jestha 2071), held at Regional Agricultural Research Station, Lumle, Kaski / Deepak Bhandari     Title : Evaluation of wheat varieties for yield and disease resistance at Regional Farmers Field Trial in the Eastern Terai Region of Nepal Material Type: printed text Authors: P Joshi, Author ; S. Manandhar, Author ; N.K Dangal, Author ; B. Chaudhary, Author ; R. Bhattarai, Author ; Yadav, Y.P., Author ; Ang Tenjing Sherpa, Author ; D.P Shrestha, Author ; M. Ojha, Author ; S.S. Vishwakarma, Author ; B.B. Masrangi, Author ; B. Raut, Author ; Chaudhary, B.P., Author Pagination: 78-80 p. Languages : English (eng) Link for e-copy: http://elibrary.narc.gov.np/?r=2512 in Proceedings of the 11th National Outreach Workshop 9-10 June 2014 (26-27 Jestha 2071), held at Regional Agricultural Research Station, Lumle, Kaski / Deepak Bhandari     Evaluation of wheat varieties for yield and disease resistance at Regional Farmers Field Trial in the Eastern Terai Region of Nepal [printed text] / P Joshi, Author ; S. Manandhar, Author ; N.K Dangal, Author ; B. Chaudhary, Author ; R. Bhattarai, Author ; Yadav, Y.P., Author ; Ang Tenjing Sherpa, Author ; D.P Shrestha, Author ; M. Ojha, Author ; S.S. Vishwakarma, Author ; B.B. Masrangi, Author ; B. Raut, Author ; Chaudhary, B.P., Author . - [s.d.] . - 78-80 p. Languages : English (eng) Link for e-copy: http://elibrary.narc.gov.np/?r=2512

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Participatory evaluation of wheat genotypes for yield and disease resistance in the Eastern Terai Region of Nepal / N.K Dangal ; S. Manandhar ; B. Chaudhary ; P Joshi ; R. Bhattarai ; Basnet, R. ; Gautam, N.R. ; Yadav, Y.P.    

Public ISBD in Proceedings of the 11th National Outreach Workshop 9-10 June 2014 (26-27 Jestha 2071), held at Regional Agricultural Research Station, Lumle, Kaski / Deepak Bhandari     Title : Participatory evaluation of wheat genotypes for yield and disease resistance in the Eastern Terai Region of Nepal Material Type: printed text Authors: N.K Dangal, Author ; S. Manandhar, Author ; B. Chaudhary, Author ; P Joshi, Author ; R. Bhattarai, Author ; Basnet, R., Author ; Gautam, N.R., Author ; Yadav, Y.P., Author Pagination: 66-70 p. Languages : English (eng) Link for e-copy: http://elibrary.narc.gov.np/?r=2509 in Proceedings of the 11th National Outreach Workshop 9-10 June 2014 (26-27 Jestha 2071), held at Regional Agricultural Research Station, Lumle, Kaski / Deepak Bhandari     Participatory evaluation of wheat genotypes for yield and disease resistance in the Eastern Terai Region of Nepal [printed text] / N.K Dangal, Author ; S. Manandhar, Author ; B. Chaudhary, Author ; P Joshi, Author ; R. Bhattarai, Author ; Basnet, R., Author ; Gautam, N.R., Author ; Yadav, Y.P., Author . - [s.d.] . - 66-70 p. Languages : English (eng) Link for e-copy: http://elibrary.narc.gov.np/?r=2509

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