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Johnson DE, Mortimer AM. 2005. Issues for integrated weed management and decision supportin direct seeded rice. In: Rice is life: scientific perspectives for the 21st century.Proceedings of the World Rice Research Conference held in Tokyo and Tsukuba, Japan,4-7 November 2004. Los Baños (Philippines): International Rice Research Institute,and Tsukuba (Japan): Japan International Research Center for Agricultural Sciences.CD. p 211-214.Koshta VK, Baghel SS, Shrivastava MN. 1991. Rainfed lowland rice-based farming systems inMadhya Pradesh: farmers’ practices and progress of research towards higher productivityand sustainability. In Proc. Rainfed Lowland Rice Farming Research Planning Meeting,Myanmar, 2-6 August 1991. Los Baños (Philippines): International Rice ResearchInstitute. p 77-90.Mazid MA, Bhuiyan SI, Mannan MA, Wade LJ. 2002. Dry seeded rice for enhancing productivityof rainfed drought-prone lands: lessons from Bangladesh. In: Pandey S, MortimerM, Wade L, Tuong TP, Lopez K, Hardy B, editors. Direct seeding: research issues andopportunities. Proceedings of the International Workshop on Direct Seeding in Asian RiceSystems: Strategic Research Issues and Opportunities, 25-28 January 2000, Bangkok,Thailand. Los Baños (Philippines): International Rice Research Institute. p 185-200.Mazid MA, Jabber MA, Mortimer M, Wade LJ, Riches CR, Orr AW. 2003. Improving rice-basedcropping systems in north-west Bangladesh: diversification and weed management. TheBCPC International Congress, Crop Production and Protection. p 1029-1034.Mazid MA, Mortimer AM, Riches CR, Orr A, Karmarker B, Ali A, Jabbar MA, Wade LJ. 2005.Rice establishment in drought-prone areas of Bangladesh. In: Rice is life: scientific perspectivesfor the 21st century. Proceedings of the World Rice Research Conference heldin Tokyo and Tsukuba, Japan, 4-7 November 2004. Los Baños (Philippines): InternationalRice Research Institute, and Tsukuba (Japan): Japan International Research Center forAgricultural Sciences. CD. p 193-195.Moody K. 1989. Weeds reported in rice in South and Southeast Asia. Metro Manila (Philippines):International Rice Research Institute. 442 p.Mortimer AM, Hill JE. 1999. Weed species shifts in response to broad spectrum herbicides insub-tropical and tropical crops. The Brighton Conference – Weeds, BCPC Conference,Farnham, UK. p 425-436.Nantasomsaran P, Moody K. 1995. Weed management for lowland rice. In: Ingram KT, editor.Rainfed lowland rice – agricultural research for high environments. Metro Manila(Philippines): International Rice Research Institute. p 157-166.Nayak BC, Lenka D. 1988. Studies on cultural practices for rainfed lowland rice drought pronemedium land rice. Indian J. Agron. 33(1):1-6.Pandey S, Velasco L. 2002. Economics of direct seeding in Asia: patterns of adoption andresearch priorities. In: Pandey S, Mortimer M, Wade L, Tuong TP, Lopez K, Hardy B,editors. Direct seeding: research issues and opportunities. Proceedings of the InternationalWorkshop on Direct Seeding in Asian Rice Systems: Strategic Research Issuesand Opportunities, 25-28 January 2000, Bangkok, Thailand. Los Baños (Philippines):International Rice Research Institute. p 3-14.Pandey S, Velasco L. 2005. Trends in crop establishment methods in Asia and research issues.In: Rice is life: scientific perspectives for the 21st century. Proceedings of the WorldRice Research Conference held in Tokyo and Tsukuba, Japan, 4-7 November 2004. LosBaños (Philippines): International Rice Research Institute, and Tsukuba (Japan): JapanInternational Research Center for Agricultural Sciences. CD. p 178-181.Direct seeding of rice and opportunities for improving productivity in Asia 213
Pane H, Noor ES, Jatmiko SY, Johnson DE, Mortimer M. 2005. Weed communities of gogorancahand walik jerami rice in Indonesia and reflections on management. Proceedingsof the BCPC International Congress on Crop Science and Technology – 2005, SECC,Glasgow, UK. 1:533-544.Rathore AL, Sahu KK. 2002. Effect of dry seeded and transplanted rice on water use and productivityof rice and chickpea grown under rainfed lowland ecosystem. Presented at theInternational Conference on Environmental Sustainable Agriculture for Dry Areas forthe 3 rd Millennium, Shijiazhuang, China, 15-19 Sept. 2002. (Unpublished.)Rosegrant M. 1991. Irrigation investment and management in Asia: trends, priorities and policydistortions. Paper Presented at World Bank Conference on Agricultural Technology,Virginia.Saleh AFM, Bhuiyan SI. 1995. Crop and rainwater management strategies for increasing productivityin rainfed lowland rice. Agric. Syst. 48(3):259-276.Saleh AFM, Mazid MA, Bhuiyan SI. 2000. Agrohydrologic and drought risk analyses of rainfedcultivation in northwest Bangladesh. Proceedings of the International Workshopon Characterizing and Understanding Rainfed Environments. Los Baños (Philippines):International Rice Research Institute. p 233-244.Sharma G, Patil SK, Buresh RJ, Mishra VN, Das RO, Haefele SM, Shrivastava LK. 2005. Cropperformance and nitrogen dynamics in rainfed lowland rice–legume cropping systemsas related to rice establishment method. Field Crops Res. 92:17-33.Singh G, Singh Y, Singh VP, Johnson DE, Mortimer M. 2005. System-level effects in weedmanagement in rice-wheat cropping in India. Proceedings of the BCPC InternationalCongress on Crop Science and Technology – 2005, SECC, Glasgow, UK. 1:545-550.Singh AK, Tuong TP, Wopereis MCS, Boling A, Kropff MJ. 1995. Quantifying lowland riceresponses to soil-water deficit. In: Fragile lives in fragile ecosystems. Proceedings ofthe International Rice Research Conference, 13-17 Feb. 1995. Los Baños (Philippines):International Rice Research Institute. p 507-520.Tomar VS. 2002. The beushening system of rice crop establishment in eastern India. In: PandeyS, Mortimer M, Wade L, Tuong TP, Lopez K, Hardy B, editors. Direct seeding: researchissues and opportunities. Proceedings of the International Workshop on Direct Seeding inAsian Rice Systems: Strategic Research Issues and Opportunities, 25-28 January 2000,Bangkok, Thailand. Los Baños (Philippines): International Rice Research Institute. p53-74.Tuong TP. 1999. Productive water use in rice production: opportunities and limitations. J. CropProd. 2:241-264.Watanabe H, Zuki MI, Ho NK. 1997. Response of 2,4-D resistant biotypes of Fimbristylismiliacea (L.) Vahl. to 2,4-D dimethylamine and its distribution in Muda plain, PeninsulaMalaysia. J. Weed Sci. Technol. 42(3):240-249.Zeigler RS, Puckridge DW. 1995. Improving sustainable productivity in rice based rainfedlowland systems of South and South-East Asia. GeoJournal 35(3):307-324.Zhao DL, Atlin GN, Bastiaans L, Spiertz HJ. 2006a. Cultivar weed-competitiveness in aerobicrice: heritability, correlated traits, and the potential for indirect selection in weed-freeenvironments. Crop Sci. 46(1):372-380.214 Johnson et al
Page 2:
Improving AgriculturalProductivity
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Bangladeshi experiences with a drum
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AcknowledgmentsIRRI is most gratefu
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The High Barind Tract: a challengin
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irrigation across the entire Barind
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Workshop synthesis
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and, with representatives from the
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Subsistence pressureLand pressure,
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HerbicidesEarlier efforts to introd
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volume). PVS is an effective way to
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Farmers may use wet-seeded DSR as a
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process and distributing HNPV to fa
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an NGO, have successfully collabora
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Workshop discussionParticipants dis
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How can we identify a short-duratio
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to fixed tenancy. The implication i
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Opportunities for improving ricepro
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that the reliability and productivi
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Table 1. Planting dates, direct-see
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Table 2. (A) Mean effect of fertili
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Table 5. On-farm trials of a drum s
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Upper toposequenceYield (t ha -1 )7
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and perennial grasses (e.g., Ischae
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Direct-seeded rice in the HighBarin
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Table 1. Sample selection for costs
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Table 4. Variations in weed managem
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Table 7. Labor requirements (days h
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Table 10. Farmer perceptions of dis
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Farmers (no.)1412108DSRWet-seededDr
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able commercially. Other OFT farmer
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Box 1. Farmers’ comments on DSRPo
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NotesAuthors’ addresses: M.A. Jab
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This paper explores the role of som
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(Olsen method, atomic absorption),
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Mean biomass (g m −2 )1,000.000Fi
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Fig. 3. Log rank abundance of weed
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attested by Fig. 2). Diversity in t
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Bangladeshi experiences with a drum
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Table 1. Grain yield and crop durat
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Table 5. Grain yield and growth dur
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ACEy = 0.0001x + 0.7089Yield (t ha
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Table 11. Partial budget analysis f
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ConclusionsDirect wet-seeded rice u
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A 178% increase in rice production
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Table 1. Components of yield gaps d
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Table 3. Weed management in Comilla
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Table 5. Weed management practices
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Table 7. Significance (P H o ) of t
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Since 2000, there has been an incre
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Identifying varieties for the High
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Table 1. Rice varieties bred by cli
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Table 2. Grain yield advantage of J
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Table 3. Plant height and crop dura
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Table 6. Summary of adoption and sp
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Freeman GH, Perkins J.M. 1971. Envi
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Opportunities for improving rabi cr
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Grain yield (t ha -1 )2.0npp1.5LSD
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In each of the plots, numbers of He
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Table 2. Effect of IPM components o
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Unit plot size was 10 10 m and the
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Yield (t ha -1 )5Straw4321GrainP (g
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Nodulation score3AControl Soil Mo P
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even at low levels of production. B
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Integration of chickpea and other r
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Grain yield (t ha -1 )3.02.51989-99
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Improved Improved Rainfed rainfed C
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Table 1. Preharvest and postharvest
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Greater resistance to Helicoverpa p
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wheat varieties). There is also sco
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Developing seed systems fordissemin
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This paper describes attempts to em
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seed needed to attain the recommend
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introduced to permit sale beyond th
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pesticides, inoculation with benefi
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for the rabi crop in 2001. Hence, b
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where farmers decided not to relay-
Page 174 and 175: Table 2. Mean dates of T. aman harv
Page 176 and 177: Table 4. Subsistence pressure and r
Page 178 and 179: Table 7. Subsistence pressure and r
Page 180 and 181: cite the absence of rent as a facto
Page 182 and 183: abi cropping in the HBT through ear
Page 184 and 185: Formulation and dissemination ofimp
Page 186 and 187: in India, for which shorter-duratio
Page 188 and 189: Applied researchOFTsAdaptive resear
Page 190 and 191: Table 1. Recommended package of pra
Page 192 and 193: Table 2. Grain yields (kg ha -1 ) o
Page 194 and 195: Table 4. Grain yields (t ha -1 ) of
Page 196 and 197: Table 6. Mean grain yields (t ha -1
Page 198: constraints present. This in itself
Page 202 and 203: Extending rabi cropping in rice fal
Page 204 and 205: Table 1. Estimates of rice area dur
Page 206 and 207: Yield (kg ha -1 )1,2001,00080060040
Page 208 and 209: Future disseminationThrough dialogu
Page 210 and 211: Direct seeding of rice andopportuni
Page 212 and 213: Table 1. Time of establishment and
Page 214 and 215: Table 3. Weed density and biomass a
Page 216 and 217: than in Central Java and many farme
Page 218 and 219: Proportion abundance (log scale)Ran
Page 220 and 221: CAN FIELD BE DRAINED?YesCAN FIELD B
Page 224: Zhao DL, Atlin GN, Bastiaans L, Spi
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