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Growth analysis and competition studies involving red rice and rice "Oryzica 1" were conducted at CIAT, Colombia, during 1989 and 1990. In competition red rice (2 biotypes) grew taller than Oryzica 1, but had similar leaf area. During the first 60 days after emergence (d.a.e.) Oryzica 1 tillered ...


Fischer, Albert J.Ramírez Suárez, A.[Red rice (oryza sativa): competition studies for management decisions]Red rice (oryza sativa): competition studies for management decisions

Sanint, Luis RobertoSeré Rabé, CarlosRivas Ríos, LibardoRamírez Suárez, A.[The savannas of South America: towards a research agenda for CIAT: (summary of the rapid appraisals conducted in Brazil, Colombia and Venezuela, 1990-91)]The savannas of South America: towards a research agenda for CIAT: (summary of the rapid appraisals conducted in Brazil, Colombia and Venezuela, 1990-91)

The critical period of rice-weed competition was studied for the rice varieties Oryzica 1 and CICA 8, in 1989 and 1990. Weed species were: Eleusine indica, Echinochloa crus-galli, Echinochloa colonum, Cyperus difformis, Cyperus esculentus, Cyperus iria, Leptochloa filiformis, and Eclipta alba. Co...


Fischer, Albert J.Lozano, J.C.Ramírez Suárez, A.Sanint, Luis Roberto[Yield loss prediction for integrated weed management in direct-seeded rice]Yield loss prediction for integrated weed management in direct-seeded rice

Weed control in Latin America is costly and heavily dependent upon herbicides. Often irrigated rice farmers spray herbicides in late post-emergence at 30 to 44 days after emergence (d.a.e.). The economic benefits from such late applications are often unclear. Two experimental approaches involving...


Fischer, Albert J.Ramírez Suárez, A.[Mixed weed infestations : prediction of crop losses for economic weed management in rice]Mixed weed infestations : prediction of crop losses for economic weed management in rice
Ramírez Suárez, A.Seré Rabé, CarlosUquillas, JE[Impacto socioeconómico de sistemas agroforestales en la Selva Baja del Ecuador]Impacto socioeconómico de sistemas agroforestales en la Selva Baja del Ecuador
Fischer, Albert J.Ramírez Suárez, A.[Estimación de pérdidas de rendimiento en arroz para el manejo económico del arroz rojo (Oryza sativa L.)]Estimación de pérdidas de rendimiento en arroz para el manejo económico del arroz rojo (Oryza sativa L.)
Ramírez Suárez, A.Seré Rabé, CarlosUquillas, JE[Impacto socioeconómico de sistemas agroforestales en la región amazónica del Ecuador]Impacto socioeconómico de sistemas agroforestales en la región amazónica del Ecuador

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