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- Title
PARTICIPATORY CROP IMPROVEMENT: EFFECT OF FARMERS' SELECTION CRITERIA ON DIVERSITY OF RICE GROWN IN UPLANDS OF NEPAL.
- Authors
Subedi, Sushil; Rosyara, Umesh Raj; Adhikari, Bhinu Bilas; Ojha, Bishnu R.; Ghimire, Devi Prasad; Dhakal, Durga Datta; Gurung, Hari Bhagat; Pandey, Sushil
- Abstract
Envisioned important advantage of participatory varietal selection (PVS) is increased adoption of improved cultivars due to speedy uptake by farmers. Conventionally adoption of improved cultivars is considered to have negative impact on biodiversity with declined the on-farm biodiversity. In contrast, participatory plant breeding techniques, including PVS, has been reported to increase biodiversity with some examples although increase process is not fully elucidated. As a part of International Rice Research Institute, Philippines and Institute of Agriculture and Animal Science, Nepal collaborative project, PVS was practiced in four villages of Sundar Bazaar, Lamjung, Nepal. Eight genotypes, (IR-55435-5, Ghaiya-2, Bindeshwori, Radha-32, B6149-MR-7, NR- 1824-21-1-1, IR55539-2, Radha-4 ) five each for direct seeded and transplanted rainfed rice, alongwith local checks (Phakhe Jhinuwa and Gokule Mansuli) were grown in farmers' field in mother and baby trial design. Situation of onfarm diversity, farmers' selection criteria, and socio-economic conditions were studied using participatory tools including household survey, farmers' group discussions, farmers' field days and on-farm experimentation. Before PVS, considerable diversity was found for transplanted rainfed rice (Varietal Diversity Index; VDI; 0.64) in contrast to very low diversity of direct seeded rice (VDI = 0.01). Following first cycle of PVS, there was tremendous increase in diversity of direct seeded upland rice (VDI = 0.65) whereas there was considerable increase in transplanted rainfed rice (VDI = 0.81). Difference in adoption of cultivars was found connected with difference in selection criteria which was eventually based on socio-economic context of farmers. Consequently, increase in varietal diversity of upland rice is related with diversity in selection criteria and priority linked with difference in socioeconomic conditions.
- Subjects
LAMJUNG (Nepal : District); CROP management; RICE; UPLANDS; CULTIVARS; CROP insurance; AGRICULTURAL research
- Publication
Journal of Agricultural Research (03681157), 2011, Vol 49, Issue 1, p83
- ISSN
0368-1157
- Publication type
Article