Ecogeographic and Genetic Diversity Analysis of Mango in Nepal / Subedi, A ; Bajracharya, J. ; Regmi, H.N. ; H. B. K. C ; Gupta, S.R. ; B.K. Joshi    

Public ISBD in Fourth national workshop on horticulture , March 2-4, 2004 ; Abstracts     Title : Ecogeographic and Genetic Diversity Analysis of Mango in Nepal Material Type: printed text Authors: Subedi, A, Author ; Bajracharya, J., Author ; Regmi, H.N., Author ; H. B. K. C, Author ; Gupta, S.R., Author ; B.K. Joshi, Author Pagination: 66-70 p. Languages : English (eng) Keywords: ccogcographic  survey,  genetic  diversity,  landraccs,  diversity  index Abstract: Mango is one of the important tropical fruits of Nepal ami occurs as a domesticated or ll'ild entity in the complex of biotic community of the ecosystem. Wide ecological variation and diverse needs of multi-ethnic comm1mities has enriched the country with genetic 1vealth of diverse mango varieties and land races. The tropical plain, river gorge areas and sub-tropical valleys are the regions that are rich in mango diversity. As a result, the global project on "Strengthening scientific basis of in-situ consen•ation of agricultural biodiversity on-farm, Nepal componellt" identified mango as a mandatol)' crop and under the project, ecogeographic sun•ey and genetic di1•ersity was carried to measure the extent of diversity. Siraha, Saptari, Dhading, Kavre, Parbat. Baglw1g and Dadeldlwra, the districts representing the Terai and mid-hill ecosystems ll'ere surreyed for mango diversity. Fruit samples of 216 mango trees collected in ecogeographic sun•ey were evaluated for nineteen nwrplwlogical characters of fruit to understand the genetic relationships. A mnge of \'(/riation e.risted in varietalfrmit of mango with dijferellf shapes, co/ow; sizes,j7al'fmr (aroma) and taste u·ith 25- 47 coefficiellts of variation and 0.59-0.87 Shannon Weaver index. Principal compm1e11t analysis of qualitative traits and quallfitative traits of fruits sholl'ed the existence of a collfinuum diversity of mango in Ne1}(ll with no ecogeograpflic differentiation and qualiwtive traits were of importance in determining tile groupings and relationships rif mcmgo \'Orieties under study. The ecogeographic survey findings and genetic di1•ersity results were discussed relative to the efficient utilization and c:onsen•ation. Link for e-copy: http://elibrary.narc.gov.np/?r=453 in Fourth national workshop on horticulture , March 2-4, 2004 ; Abstracts     Ecogeographic and Genetic Diversity Analysis of Mango in Nepal [printed text] / Subedi, A, Author ; Bajracharya, J., Author ; Regmi, H.N., Author ; H. B. K. C, Author ; Gupta, S.R., Author ; B.K. Joshi, Author . - [s.d.] . - 66-70 p. Languages : English (eng) Keywords: ccogcographic  survey,  genetic  diversity,  landraccs,  diversity  index Abstract: Mango is one of the important tropical fruits of Nepal ami occurs as a domesticated or ll'ild entity in the complex of biotic community of the ecosystem. Wide ecological variation and diverse needs of multi-ethnic comm1mities has enriched the country with genetic 1vealth of diverse mango varieties and land races. The tropical plain, river gorge areas and sub-tropical valleys are the regions that are rich in mango diversity. As a result, the global project on "Strengthening scientific basis of in-situ consen•ation of agricultural biodiversity on-farm, Nepal componellt" identified mango as a mandatol)' crop and under the project, ecogeographic sun•ey and genetic di1•ersity was carried to measure the extent of diversity. Siraha, Saptari, Dhading, Kavre, Parbat. Baglw1g and Dadeldlwra, the districts representing the Terai and mid-hill ecosystems ll'ere surreyed for mango diversity. Fruit samples of 216 mango trees collected in ecogeographic sun•ey were evaluated for nineteen nwrplwlogical characters of fruit to understand the genetic relationships. A mnge of \'(/riation e.risted in varietalfrmit of mango with dijferellf shapes, co/ow; sizes,j7al'fmr (aroma) and taste u·ith 25- 47 coefficiellts of variation and 0.59-0.87 Shannon Weaver index. Principal compm1e11t analysis of qualitative traits and quallfitative traits of fruits sholl'ed the existence of a collfinuum diversity of mango in Ne1}(ll with no ecogeograpflic differentiation and qualiwtive traits were of importance in determining tile groupings and relationships rif mcmgo \'Orieties under study. The ecogeographic survey findings and genetic di1•ersity results were discussed relative to the efficient utilization and c:onsen•ation. Link for e-copy: http://elibrary.narc.gov.np/?r=453

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Participatory Idm Research on Potato Late Blight Through Farmers field school / Sharma, B.P. ; H. B. K. C    

Public ISBD in Fourth national workshop on horticulture , March 2-4, 2004 ; Abstracts     Title : Participatory Idm Research on Potato Late Blight Through Farmers field school Material Type: printed text Authors: Sharma, B.P., Author ; H. B. K. C, Author Pagination: 205-210 p. Languages : English (eng) Keywords: cost  analysis,  empowerment,  IDM,  late  blight,  participatory  research Abstract: Late blight caused by Phytophthora itifestans (Mom.) DeBary is the most devastating disease of potato causing substantial yield loss in the country. Various agro-inputs are being advertised and made available to the farmers for the control of late blight. Farmer's Field School (FFS) has been under way since 1998 in the Kathmandu valley to empower the potato fanners for profitable technology and input selection with great emphasis on integrated disease management (/DM) assess in terms of cost effectiveness against late blight. FFS conducted during Jan-April 2003 at Mulpani-2 Kathmandu, revealed that participated farmers became able to select technology and inputs as per cost effectiveness and their requirements. The outstanding experiences of FFS were (I) Variety Khumal Seto-1 was unanimously selected for higher yield (31.44 tlha) with late blight resistance. (2) Farmers convinced themselves to grow spring season potato without fungicides spray (3) Farmers realized that use of "EM"(essential microorganism) and "Magic" (concentrated natural seaweed fertilizer) spray on potato increased tuber yield but not found cost effective. (4) Application of Trichoderma harzianum (NIP ROT) was not found effective for late blight control. (5) Commercial adjuvant (APSA-80), when added into spray solution, was found to be quite effective to increase the efficacy of fungicide. IDM applied plot produced 34-47 % more tuber yield than existing farmers practice. Farmers were empowered for technology and input selection based on per unit cost of production. Link for e-copy: http://elibrary.narc.gov.np/?r=494 in Fourth national workshop on horticulture , March 2-4, 2004 ; Abstracts     Participatory Idm Research on Potato Late Blight Through Farmers field school [printed text] / Sharma, B.P., Author ; H. B. K. C, Author . - [s.d.] . - 205-210 p. Languages : English (eng) Keywords: cost  analysis,  empowerment,  IDM,  late  blight,  participatory  research Abstract: Late blight caused by Phytophthora itifestans (Mom.) DeBary is the most devastating disease of potato causing substantial yield loss in the country. Various agro-inputs are being advertised and made available to the farmers for the control of late blight. Farmer's Field School (FFS) has been under way since 1998 in the Kathmandu valley to empower the potato fanners for profitable technology and input selection with great emphasis on integrated disease management (/DM) assess in terms of cost effectiveness against late blight. FFS conducted during Jan-April 2003 at Mulpani-2 Kathmandu, revealed that participated farmers became able to select technology and inputs as per cost effectiveness and their requirements. The outstanding experiences of FFS were (I) Variety Khumal Seto-1 was unanimously selected for higher yield (31.44 tlha) with late blight resistance. (2) Farmers convinced themselves to grow spring season potato without fungicides spray (3) Farmers realized that use of "EM"(essential microorganism) and "Magic" (concentrated natural seaweed fertilizer) spray on potato increased tuber yield but not found cost effective. (4) Application of Trichoderma harzianum (NIP ROT) was not found effective for late blight control. (5) Commercial adjuvant (APSA-80), when added into spray solution, was found to be quite effective to increase the efficacy of fungicide. IDM applied plot produced 34-47 % more tuber yield than existing farmers practice. Farmers were empowered for technology and input selection based on per unit cost of production. Link for e-copy: http://elibrary.narc.gov.np/?r=494

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