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RICE RATOONING IN RIO DE JANEIRO 59Table 5. Milling quality grain translucence, and 1,000 grain weight of main crop and ratooncrop of rice cultivars at 3 cutting heights, 1984. aMain cropRatoonCultivar Cutting MR HG GT 1,000-GW MR HG GT 1,000-GWheight (%) (%) (%) (g) (%) (%) (%) (g)(cm)MG209P102IR841P101L-5738P899Metica 1De Abril102030102030102030102030102030102030102030102030636659646367636563636258636766606063616365595958506052523650545143555742545454503238524953424542736674767779898689867176938184717774868180404141232222212221262526262626262525252426252325312825556151495561545659–4650505857575460575958–5953424849364360504955–3239405149352940414640–4544898784918988959193–8789969694787566928893–4141212221211820242424–2221222222232424202121–2825a Mean of three replications for each cutting height. MR = milled rice, HG = head grain, GT =grain translucence, GW = grain weight.7. Cutting height did not influence grain quality of the main crop or of the ratooncrop;8. Ratooning may be a satisfactory agronomic practice, requiring less labor andcosts than growing another conventional rice crop.REFERENCES CITED1. Andrade, W. E. de B., S. Amorim Neto, A. B. de Oliveira, and M. B. Fernandes. 1985. Height ofcutting of the main crop influences rice ratoon yield [in Portuguese]. Pages 173-178 in Irrigated riceworkshop, 14 Pelotas.2. Balasubramanian, B. Y., B. Morachan, and R. Kaliapa. 1970. Studies on ratooning in rice. Growthattributes and yield. Madras Agric. J. 57(11):565-570.3. T. Ishikawa. 1964. Studies on the ratoon of rice plant in early cultivation [in Japanese, with Englishsummary]. Bull. Fac. Agric. Univ. Jpn. 10(1):72-78.4. F. Nascimento Neto, L. Nunes Nunes, and M. de Andrade. 1984. Environmental factors can limit riceratoon utilization by farmers [in Portuguese]. PESAGRO-RIO Technical Paper 31, Nov 1984,Niteroi. 2 p.5. Oliveira, A.B. de, and S. Amorim Neto. 1979. Rice ratooning production of rice cultivars in differentsowing dates in the Norte Fluminense Region [in Portuguese]. PESAGRO-RIO Technical Pap. 31,Nov 1979, Niteroi. 3 p.
60 RICE RATOONING6. Parago, J. F. 1963. A review of work on rice ratooning in the Philippines. Agric. Ind. Life 25(7):8-9,39.7. Ramos, M. G., and R. C. Dittrich. 1981. Effect of height cutting of the main crop on rice ratooningyield [in Portuguese]. Pages 137-140 in Irrigated rice workshop, 11 Pelotas.8. Saran, A. B., and M. Prasad. 1952. Ratooning in paddy. Curr. Sci. 21(8):223-224.
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RICERATOONING1988INTERNATIONAL RICE
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ContentsForewordWelcome 1OverviewRi
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Genetics and varietal improvementIn
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2 RICE RATOONINGthe main crop. Harv
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4 RICE RATOONINGTable 1. Area, prod
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6 RICE RATOONINGTable 2. Rice varie
Page 15 and 16: 8 RICE RATOONING1. Effect of spacin
Page 17 and 18: 10 RICE RATOONINGHowever, no signif
Page 19 and 20: 12 RICE RATOONINGrelating to seed v
Page 21 and 22: 14 RICE RATOONING5. Cultivars that
Page 24 and 25: Economic perspectivesof rice ratoon
Page 26 and 27: ECONOMIC PERSPECTIVES OF RICE RATOO
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Page 39 and 40: 32 RICE RATOONINGla) Developmental
Page 41 and 42: 34 RICE RATOONINGCutting heightStub
Page 43 and 44: 36 RICE RATOONINGEarly flooding enc
Page 45 and 46: 38 RICE RATOONING2. Factors affecti
Page 47 and 48: 40 RICE RATOONING27. Nair, N.R., an
Page 49 and 50: 42 RICE RATOONING1. Changes in till
Page 51 and 52: 44 RICE RATOONINGTable 2. Character
Page 53 and 54: 46 RICE RATOONING9. International R
Page 55 and 56: 48 RICE RATOONINGplot size is 6 row
Page 57 and 58: 50 RICE RATOONINGimproved ratooning
Page 59 and 60: 52 RICE RATOONINGTable 6. Simple co
Page 62 and 63: Utilization of rice ratooningby far
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Page 68 and 69: Rice ratooningin the Dominican Repu
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Page 77 and 78: 89111306514772Special points Refere
Page 79 and 80: 72 RICE RATOONINGANDHRA PRADESHBasu
Page 81 and 82: 74 RICE RATOONINGrice observed at t
Page 83 and 84: 76 RICE RATOONINGTAMIL NADUBalasubr
Page 85 and 86: 78 RICE RATOONING19. Reddy, T.G., M
Page 87 and 88: 80 RICE RATOONING1. Rice-growing re
Page 89 and 90: 82 RICE RATOONING2. High cutting he
Page 91 and 92: 84 RICE RATOONINGTable 3. Yield tri
Page 94 and 95: Rice ratoon crop managementin the h
Page 96 and 97: RICE RATOON CROP MANAGEMENT IN KARN
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Page 102: RICE RATOON CROP MANAGEMENT IN KARN
Page 105 and 106: 98 RICE RATOONING1. The Tungabhadra
Page 107 and 108: 100 RICE RATOONINGthe results of po
Page 109 and 110: 102 RICE RATOONINGTable 4. Effect o
Page 112 and 113: Ratoon rice researchin Karnataka, I
Page 114 and 115: RATOON RICE RESEARCH IN KARNATAKA 1
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RATOON RICE RESEARCH IN KARNATAKA 1
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112 RICE RATOONINGTable 1. Area and
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114 RICE RATOONINGonly 7.5-49.7% of
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116 RICE RATOONINGTable 5. Relation
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Scope for rice ratoon croppingin th
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RATOON CROPPING IN NORTHEASTERN IND
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Scope for rice ratoon croppingin th
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RATOON CROPPING IN CENTRAL AND NORT
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RATOON CROPPING IN CENTRAL AND NORT
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Potential of rice ratooningin Madag
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RICE RATOONING IN MADAGASCAR 131a.
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RICE RATOONING IN MADAGASCAR 133Tab
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Potential for rice ratooningin east
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RICE RATOONING IN EASTERN INDIA 137
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Ratooning in Bangladesh:prospects a
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RATOONING IN BANGLADESH 145RATOON C
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RATOONING IN BANGLADESH 147Table 4.
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RATOONING IN BANGLADESH 149OTHER FA
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152 RICE RATOONINGTable 1. Hybrid s
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154 RICE RATOONINGThe studies sugge
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156 RICE RATOONINGVARIETIES AND CUL
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158 RICE RATOONINGspikelet primordi
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160 RICE RATOONINGTable 5. Effect o
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Agronomic principles and practiceso
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AGRONOMIC PRINCIPLES AND PRACTICES
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Rice ratooning: breeding,agronomic
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BREEDING, AGRONOMIC PRACTICES, AND
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188 RICE RATOONINGwas the most effe
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190 RICE RATOONINGRESULTSMain crop
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192 RICE RATOONINGRatoon tiller reg
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194 RICE RATOONING9. Rister, M. E.,
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196 RICE RATOONINGExcept for rice w
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198 RICE RATOONINGInsect survivorsh
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200 RICE RATOONING1. Stem borer occ
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202 RICE RATOONING3. Population dyn
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204 RICE RATOONING2, 3). Microvelia
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206 RICE RATOONINGplant chemicals a
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208 RICE RATOONING17. Krishnamurthy
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210 RICE RATOONING1. Yellow dwarf c
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212 RICE RATOONING3. The effect of
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214 RICE RATOONINGAlthough the inte
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216 RICE RATOONINGTable 6. Sheath b
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Yellow dwarf disease in ratoon rice
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YELLOW DWARF DISEASE IN RATOON RICE
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228 RICE RATOONINGTable 1. Estimate
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Main crop a Ratoon crop b53.956.155
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Disease and insect pestsand their c
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DISEASE AND INSECT PESTS IN RICE RA
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DISEASE AND INSECT PESTS IN RICE RA
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Inheritance of ratooning abilityin
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INHERITANCE OF RATOONING ABILITY IN
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248 RICE RATOONINGShould the season
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250 RICE RATOONINGYield and yield-c
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252 RICE RATOONINGMain-crop photosy
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254 RICE RATOONINGShort-termGiven t
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Commercial ratoon rice productionin
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COMMERCIAL RATOON RICE PRODUCTION I
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0.180.200.490.250.160.270.390.350.3
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268 RICE RATOONING1. Path analysis
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270 RICE RATOONINGRecommendationsVa
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ParticipantsT. AhmedRice Experiment
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Varietal indexA200, 221Achra 108/1,
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VARIETAL INDEX 277IR2061-465-1, 12I
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VARIETAL INDEX 279RU7502006, 49, 51
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RICE RATOONING - IRRI books - International Rice Research Institute

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