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A HEDONIC MODEL OF RICE TRAITS: ECONOMIC VALUES FROM FARMERS IN WEST AFRICA AgEcon
Dalton, Timothy J..
New crop varieties often have been promoted in developing countries based upon superior yield vis-a-vis locally available varieties. This research presents a hedonic model for upland rice by drawing upon the input characteristics and consumer good characteristics model literature. Model specification tests determine that a combination of production and consumption characteristics best explains the willingness to pay for new upland rice varieties. This non-separable household model specification determined that four traits explain the willingness to pay for new rice varieties: plant cycle length, plant height, grain elongation/swelling and tenderness. Yield was not significant explanatory variable for the willingness to pay for seed. The implications...
Tipo: Conference Paper or Presentation Palavras-chave: Hedonic; Upland rice; West Africa; Household modelling; Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/25804
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Crossing rate and distance in upland rice Bragantia
Silva,Edson Ferreira da; Silva,Lucielio Manoel da; Montalván,Ricardo.
Rice (Oryza sativa L.) is an autogamous species that shows natural crossing rates of up to 3%, where the variations are influenced by genotypes and environments. The present work aimed to evaluate the rates and distances of natural crossing between the upland rice cultivars Guarani and IAC 201. The study was done in the counties of Carpina and Recife, in the State of Pernambuco during the agricultural years of 2001 and 2002, respectively. The Guarani cultivar presents leaf pilosity conditioned by the dominant alleles HLHL and this character was used as a morphologic tracer. On the other hand, the IAC 201 cultivar does not show pilosity because it carries the recessive alleles (hlhl). The experiments were composed of four blocks, constituting of ten...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Oryza sativa L; Upland rice; Natural crossing.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052005000200005
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Cultivares de arroz de sequeiro para o Território Federal de Roraima. Infoteca-e
MASCARENHAS, R. E. B.; CORDEIRO, A. C. C.; ALVES, A. A. C..
bitstream/item/33539/1/CPATU-CirTec18.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Arroz de sequeiro; Avaliacao; Cultivar; Roraima; Brasil; Upland rice; Valuation; Yield; Variety.; Produtividade.; Amazonia..
Ano: 1981 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379477
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Cultivares de arroz de sequeiro para o Território Federal do Amapá. Infoteca-e
MASCARENHAS, R. E. B.; FIGUEIRÊDO, F. J. C..
bitstream/item/57592/1/CPATU-ComTec29.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Arroz de sequeiro; Cultivar; Amapá; Brasil; Upland rice; Variety; Production; Yield; Selection.; Produtividade; Produção; Seleção.; Amazonia..
Ano: 1979 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376055
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Desempenho de linhagens e cultivares de arroz de sequeiro favorecido no Estado do Amapá no ano agrícola 1995/96. Infoteca-e
ATROCH, A. L..
Visando minimizar o problema do uso de cultivares inadequadas pelos produtores, para que os materiais selecionados adaptem-se ao cultivo em sequeiro no modelo de exploração de roça e no modelo mais moderno, ou seja, utilizando-se as áreas de capoeira com uso de adubos e outros insumos, a EMBRAPA-Amapá (Centro de Pesquisa Agroflorestal do Amapá) vem executando um subprojeto de avaliação de linhagens e cultivares de arroz para cultivo em áreas de mata de terra firme no estado.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Linhagens; Brasil; Amapá; Upland rice; Genotypes.; Arroz Sequeiro; Oryza Sativa; Performance; Variedade.; Brazil; Varieties..
Ano: 1996 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/341846
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Doses econômicas de fertilizantes para a cultura do arroz de sequeiro em solo podzolico vermelho - amarelo no cerrado de Roraima. Repositório Alice
KITAMURA, P. C.; COUTO, W. S.; DUTRA, S.; CORDEIRO, A. C. C.; ALVES, A. A. C..
v.3 Culturas temporarias.
Tipo: Parte de livro Palavras-chave: Arroz de sequeiro; Produtidade; Roraima; Brasil; Upland rice; Ferilizer application.; Adubação; Análise Econômica.; Amazonia; Economic analysis; Yields..
Ano: 1986 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394622
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Doses econômicas de fertilizantes para a cultura do arroz de sequeiro em solo Podzolico Vermelho-Amarelo no cerrado de Roraima. Repositório Alice
KITAMURA, P. C.; COUTO, W. S.; DUTRA, S.; CORDEIRO, A. C. C.; ALVES, A. A. C..
Tipo: Parte de livro Palavras-chave: Arroz de sequeiro; Adubação NPK; Aspecto econômico; Roraima; Brasil; Upland rice; Economic situation.; Fertilizer application..
Ano: 1984 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/394852
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Ensaio comparativo preliminar de arroz de sequeiro - 91/92. Infoteca-e
ATROCH, A. L..
A rizicultura no Amapá e caracterizada pelo cultivo em solos de mata de terra firme, acidos e de baixa fertilidade natural. A Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA, através do Centro de Pesquisa Agroflorestal do Amapá - CPAF-Amapá, vem desenvolvendo um projeto de seleção de genotipos de arroz que visa identificar cultivares geneticamente superiores para plantio no Estado do Amapá.
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Brasil; Upland rice; Genotypes.; Arroz Sequeiro; Genótipo; Oryza Sativa.; Brazil..
Ano: 1994 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/341839
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Infecção e colonização de raízes de arroz de sequeiro por bactérias diazotróficas endofíticas. Infoteca-e
GUIMARÃES, S. L.; SILVA, R. A. da; SANTOS, C. C. R. dos; BALDANI, J. I.; BALDANI, V. L. D..
bitstream/CNPAB-2010/27159/1/cot030.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Bactéria diazotrófica endofítica; Upland rice; Colonization; Endophytic diazotrophy bacteria.; Arroz Sequeiro; Colonização; Infecção; Raiz.; Infection; Roots..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/623818
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Integrated on-farm crop diagnosis of upland rice yields in northern Thailand Thai Agricultural
Keer, K.Van; Trebuil, Guy.
Tipo: Collection Palavras-chave: Upland rice; Yields; On-farm crop diagnosis; Northern Thailand; ข้าวไร่; ผลผลิต; สภาพแวดล้อม; ระบบการปลูกพืช; การเขตกรรม; มวลชีวภาพ; ภาคเหนือ.
Ano: 2003 URL: http://anchan.lib.ku.ac.th/agnet/handle/123456789/3116
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Maravilha: a cultivar de arroz de sequeiro para os solos de mata em Rondonia. Infoteca-e
AZEVEDO, D. M. P. de.
bitstream/item/105680/1/CPAFRO-RT05-1997.pdf
Tipo: Recomendação Técnica (INFOTECA-E) Palavras-chave: Variedade maravilha; Brasil; Rondonia; Upland rice; Variety.; Arroz Sequeiro..
Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/700901
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Perdas de produção pela broca-do-colmo (Diatraea saccharalis Fabr. 1794) (Lepidoptera: Pyralidae) em genótipos de arroz de terras altas. Repositório Alice
FERREIRA, E.; BARRIGOSSI, J. A. F.; CASTRO, E. da M de; SANTOS, A. B. dos.
Estudou-se o efeito da infestação natural de Diatraea saccharalis na produção de espiguetas de 24 genótipos de arroz de terras altas, em um experimento de campo. O efeito de colmos infestados pelas lagartas D. saccharalis na massa de espiguetas de amostras e da área útil das parcelas foi estimado por um índice de perda e por análise de regressão. O índice utilizado quantifica a perda da massa de espiguetas por colmo brocado em relação à massa de espiguetas de colmo não brocado. As estimativas obtidas pelos dois métodos foram discrepantes. Menos de 10% dos genótipos manifestaram relação linear ou quadrática entre a infestação e o dano da broca-do-colmo. Perdas calculadas por esse índice mostraram-se mais adequadas às condições do experimento. A infestação...
Tipo: Artigo de periódico Palavras-chave: Arroz de terras altas; Avaliação de genótipos; Upland rice; Stem borer; Genotype evaluation.; Amostragem; Broca do Colmo; Arroz; Phaseolus Vulgaris.; Sampling..
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/202882
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Proteomic analysis of upland rice (Oryza sativa L.) exposed to intermittent water deficit. Repositório Alice
RABELLO, F. R.; VILLETH, G. R. C.; RABELLO, A. R.; RANGEL, P. H. N.; GUIMARAES, C. M.; HUERGO, L. F.; SOUZA, E. M.; PEDROSA, F. O.; FERREIRA, M. E.; MEHTA, A..
Tipo: Separatas Palavras-chave: Differential expression; Upland rice; 2-DE; Mass spectrometry.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1006453
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Resultados de pesquisa com arroz de sequeiro na Transamazônica, Pará - 1972/81. Infoteca-e
CARVALHO, E. J. M.; CORREA, J. R. V.; POLTRONIERI, L. S..
bitstream/item/66789/1/Altamira-Doc4.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Arroz de sequeiro; Cultivar; Transamazônica; Pará; Brasil; Upland rice; Yield; Fertilizer; Variety.; Adubação; Pesquisa; Produtividade.; Amazonia; Research..
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383048
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Sensitivity of APSIM/ORYZA model due to estimation errors in solar radiation Bragantia
Heinemann,Alexandre Bryan; van Oort,Pepijn A.J.; Fernandes,Diogo Simões; Maia,Aline de Holanda Nunes.
Crop models are ideally suited to quantify existing climatic risks. However, they require historic climate data as input. While daily temperature and rainfall data are often available, the lack of observed solar radiation (Rs) data severely limits site-specific crop modelling. The objective of this study was to estimate Rs based on air temperature solar radiation models and to quantify the propagation of errors in simulated radiation on several APSIM/ORYZA crop model seasonal outputs, yield, biomass, leaf area (LAI) and total accumulated solar radiation (SRA) during the crop cycle. The accuracy of the 5 models for estimated daily solar radiation was similar, and it was not substantially different among sites. For water limited environments (no irrigation),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop model; Calibration; Upland rice.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000400016
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Variedades de arroz para o cultivo de sequeiro no Estado do Pará. Infoteca-e
LOPES, A. de M.; KASS, D. L..
bitstream/item/114591/1/COMUNICADO-TECNICO-15.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Arroz de sequeiro; Cultivar; Cultivo; Altamira; Bragança; Castanhal; Santarém; Pará; Brasil; Upland rice; Variety; Cultivation; Yield.; Produtividade..
Ano: 1972 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376690
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การคัดเลือกข้าวไร่พื้นเมืองทนทานต่อสภาพแล้งต้นฤดูปลูก Thai Agricultural
Kittichai Narenut; Jirawat Sanitchon; Patcharin Songsri.
Upland rice occupied 47 percent of rice production area of the northern Thailand. Production of upland rice is facing with drought particularly in early stage of growth. This study was aimed at evaluation of indigenous upland rice for early drought resistance. The experiment was conducted in greenhouse. One hundred and eighty seven upland rice varieties including ULR 135 (resistant check) were grown in plastic pots. Randomized complete block design with 2 replications was laid out. Seeds were sown in pots under greenhouse condition. Two seedling were let to grow in each pot. Early drought was performed at 28 days after planting (DAP) for 17 days. Leaf rolling was recorded at 38 and 43 DAP whereas death leaf and recovery percentage was evaluated at 45 and...
Tipo: Collection Palavras-chave: Upland rice; Drought tolerance; ข้าวไร่; ข้าวพื้นเมือง; การคัดเลือกพันธุ์; ความสามารถในการฟื้นตัว; ความทนแล้ง; การม้วนใบ; ผลผลิต; ฤดูปลูก; การปรับปรุงพันธุ์.
Ano: 2011 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5164
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การคัดเลือกพันธุ์และการผลิตข้าวไร่พื้นเมืองโดยเกษตรกรมีส่วนร่วมเพื่อการบริโภคในท้องถิ่น Thai Agricultural
Wattana Posiri; Warunya Dantaweesin; Raumjit Nokkoul.
This research aimed to access farmer participatory breeding in selecting the local upland rice varieties for desirable agronomic traits, good cooking and eating grain characteristics. The research carried out in the land reform area of amphoes Mueang, Lamae, Thung Tako in Chumphon province. The experiment comprised 12 upland rice varieties, 11 experimental lines and 1 standard check, by using the Randomized Complete Block design with 4 replications. Results indicated that farmers had selected Samdeaun, Phukhaotong, Nahngkruan, Lebnok and Dawkkham varieties for desirable agronomic traits with reasonable uniform panicle, good tillering ability, long panicle, many secondary branches, large and heavy grains. For cooking and eating qualities, they selected...
Tipo: PhysicalObject Palavras-chave: Upland rice; Farmer participatory; Plant breeding; Agronomic traits; Cooking qualities; Eating qualities; Food security; ข้าวไร่; เกษตรกร; การผลิตข้าว; การคัดเลือกพันธุ์; การปรับปรุงพันธุ์; การทดสอบพันธุ์; คุณภาพผลผลิต; การมีส่วนร่วม; การบริโภคในครัวเรือน; ความมั่นคงทางอาหาร; พันธุ์พื้นเมือง.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5670
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การปรับปรุงดินก่อนปลูกอ้อยโดยใช้ประโยชน์จากวัชพืชในธรรมชาติ และวัสดุหรือพืชบำรุงดินชนิดต่างๆ Thai Agricultural
Santimaitree Gonkhamdee; Prasit Jaisil; Wanwipa Kaewpradit Polpinit; Tassanee Wongphet.
Tipo: PhysicalObject Palavras-chave: Sugarcane; Sugarcane production; Soil improvement; Weed; Green manure; Upland rice; Crotalaria juncea; Filter cake; Soil amendment; Fallow; Soil management; Organic matter; Total nitrogen; Available phosphorus; อ้อย; การปลูกอ้อย; การปรับปรุงดิน; วัชพืช; พืชบำรุงดิน; ข้าวไร่; ปอเทือง; วัสดุปรับปรุงดิน; กากตะกอนหม้อกรอง; การจัดการดิน; อินทรียวัตถุ; ปริมาณไนโตรเจนทั้งหมด; ปริมาณฟอสฟอรัสที่เป็นประโยชน์; การเพิ่มความอุดมสมบูรณ์ดิน; วิธีการที่เหมาะสม; การลดต้นทุนการผลิต.
Ano: 2012 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5823
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การปลูกพืชสลับในไร่อ้อยเพื่อปรับปรุงดินและเพิ่มผลผลิตอ้อย ในภาคตะวันออกเฉียงเหนือ Thai Agricultural
Putchanee Arpornrat; Usa Jakrarat.
The experiment aimed to study the effects of crop rotation in sugarcane field during the last ratoon harvest and planting a new sugarcane crop, on soil improvement, increasing sugar yield and economic return in northeast Thailand. The effect of Jack bean (Canavalia ensiformis), sunn hemp (Crotalaria juncea), upland rice (Oryza saliva L.) fallowed as the rotation system. The experiment was a Randomize Complete Block Design with three replications and 7 treatments. They included T1) farmer’s method (fallow followed by sugarcane receiving chemical fertilizer control (15-15-15 at 50 kg/rai), T2) fallow followed by sugarcane receiving chemical fertilizer (16-16-16 at 25 kg/rai+22-8-10 at 25 kg/rai and compost fertilizer at 2 tons/rai), T3) sunn hemp planting as...
Tipo: Collection Palavras-chave: Sugarcane; Saccharum officinarum L.; Soil improvement; Economic return; Upland rice; Green manure; อ้อย; การปรับปรุงดิน; ผลตอบแทนทางเศรษฐกิจ; ข้าวไร่; ปุ๋ยพืชสด.
Ano: 2012 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5565
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