SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Wailes, Eric J.; Chavez, Eddie C..

The Arkansas Global Rice Model is based on a multi-country statistical simulation and econometric framework. The model is disaggregated by five world regions: Africa, the Americas, Asia, Europe, and Oceania. Each region includes country models which have a supply sector, a demand sector, a trade, stocks and price linkage equations. All equations used in this model are estimated using econometric procedures or identities. Estimates are based upon a set of explanatory variables including exogenous macroeconomic factors such as income, population, inflation rate, technology development, and especially, government determined policy variables which reflect the various mechanisms by which countries intervene in their rice sector economy. Individual country...

Tipo: Report

Palavras-chave: Rice; Trade model; Policy; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies; CO2; C61; F11; F14; Q17; Q18.

Ano: 2011

URL: http://purl.umn.edu/102650

A COMPETITIVENESS STUDY OF FOUR RICE PRODUCTION SYSTEMS IN TRINIDAD AND TOBAGO

Seecharan, Denny; Jacque, Andrew Eliel.

Rice imports into Trinidad and Tobago in 2005 represented approximately 95% of domestic demand. Local production has been declining since reaching a peak of 21,000 tonnes in 1992. Present production is 3,500 tonnes. Rice is produced under a variety of production systems and on farms of varying sizes, productivity and quality of output. This paper examines the competitiveness of four production systems used in Trinidad and Tobago, viz.: the transplanting system (ST), the broadcast seeded system (SB)(both being small farms and highly labour intensive), the partially mechanized system of medium sized farms (MM) and a fully mechanized large farm utilizing aerial technology in the production system (CRP). The methodology involved the collection of data on...

Tipo: Conference Paper or Presentation

Palavras-chave: Rice; Policy analysis matrix; Competitiveness; Comparative advantage; Production systems; Trinidad and Tobago; CAES; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Farm Management.

Ano: 2007

URL: http://purl.umn.edu/36948

A COMPETITIVIDADE DO ARROZ IRRIGADO BRASILEIRO NO MERCOSUL

Jose Marion Filho, Pascoal; Eich Einloft, Neci.

This article evaluates the competitiveness of irrigated rice produced in Brazil, Uruguay and Argentina, the main partners in the commerce of this cereal. The rice production costs, the agricultural policies, the exchange rates and the common external tariff (CET) in the three countries are analyzed comparatively. The research shows that the rice produced in Argentina is the most competitive of the region, due to the lower production costs per hectare and per bag of 50 kg, followed by Uruguay and Brazil. Regarding the agricultural policy of each country, in Brazil policies are mainly oriented towards rural credit and short term actions, with reduced subsidies for large scale farmers and protection of family agriculture. In Uruguay, the agricultural policies...

Tipo: Journal Article

Palavras-chave: Rice; Competitiveness; Agricultural policy..

Ano: 2008

URL: http://purl.umn.edu/48436

A cultura do arroz em Rondônia.

A Dynamic Decision Model of Technology Adoption under Uncertainty: Case of Herbicide-Resistant Rice

RAPOSO, J. A. de A..

Procurou-se reunir informacoes iniciais sobre o arroz em Rondonia, atraves de observacoes proprias e informacoes colhidas entre os colonos da regiao. Alguns conceitos sao emitidos, de modo empirico, "in loco"no dia a dia. Apresenta o sistema de cultivo em uso e aspectos relativos a comercializadao do produto.

Tipo: Comunicado Técnico (INFOTECA-E)

Palavras-chave: Rondônia; Amazônia Ocidental; Western Amazon.; Arroz; Oryza Sativa; Plantio.; Rice; Rice; Planting..

Ano: 1979

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/697972

Annou, Mamane Malam; Wailes, Eric J.; Thomsen, Michael R..

Herbicide-resistant (HR) rice technology is a potential tool for control of red rice in commercial rice production. Using an ex ante mathematical programming framework, this research presents an empirical analysis of HR rice technology adoption under uncertainty. The analysis accounts for stochastic germination of red rice and sheath blight to model a profit maximization problem of crop rotation among HR rice, regular rice, and soybeans. The results demonstrate that risk attitudes and technology efficiency determine adoption rates and optimal rotation patterns.

Tipo: Journal Article

Palavras-chave: Biotechnology; Herbicide resistance; Mathematical programming; Profit maximization; Rice; Risk; Rotation; Technology; Adoption; Crop Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q16; Q18; O33; C61.

Ano: 2005

URL: http://purl.umn.edu/43724

A new approach for obtaining rapid uniformity in rice (Oryza sativa L.) via a 3x x 2x cross

Genet. Mol. Biol.

Xing,Shaochen; Cai,Yuhong; Zhou,Kaida.

A triploid (2n = 3x = 36) rice plant was obtained by screening a twin seedling population in which each seed germinated to two or three sprouts that were then crossed with diploid plants. One diploid plant was chosen among the various F1 progenies and developed into an F2 population via self-pollination. Compared with the control variety Shanyou 63, this F2 population had a stable agronomical performance in field trials, as confirmed by the F-test. The stability of the F2 population was further substantiated by molecular analysis with simple sequence repeat markers. Specifically, of 160 markers assayed, 37 (covering all 12 chromosomes) were polymorphic between the parental lines. Testing the F1 hybrid individually with these markers showed that each PCR...

A study the effect of two machine types in some technical indicators

Palavras-chave: F-test; Polyploidy; Rice; SSR marker; Stability.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200020

CIGR Journal

Alwan, salih kadhim.

The experiment has been conducted to evaluate the effect in some technical indicators of husking and whitening machines for cultivar rice (DM), in the labrotaries of the Tehran University in 2015. This research includes the using of two types of machines (Satake and Yanmar),),under three clearance between cylinders levels 0.4 , 0.6 and 0.8 mm and three grain moisture levels 10-12% , 12- 14% and 14-16%. The results showed that the Satake type machine is significantly better than the Yanmar type machine in all studies properties .While clearance o.8 significant superiorly on two 0.4,0.6 mm levels as well as moisture cotent of grain 10-12% is superior significantly on two 12-14%,14-16% levels in all studied properties . The best results have come...

A walk on the wild side: Oryza species as source for rice abiotic stress tolerance

Palavras-chave: Agriculture engineering Husking; Grain moisture content; Machine; Clearance; Rice; Technical indicators.

Ano: 2016

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3840

Genet. Mol. Biol.

Menguer,Paloma Koprovski; Sperotto,Raul Antonio; Ricachenevsky,Felipe Klein.

Abstract Oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. Although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call for new, fast generation of stress tolerant rice germplasm, and current within-species rice diversity might not be enough to overcome such needs. The Oryza genus contains other 23 wild species, with only Oryza glaberrima being also domesticated. Rice domestication was performed with a narrow genetic diversity, and the other Oryza species are a virtually untapped genetic resource for rice stress tolerance...

Accounting of agricultural and nonagricultural impacts of irrigation and drainage Systems: A report of research in Taiwan and Sri Lanka in 2003

Palavras-chave: Oryza; Rice; Wild species; Abiotic stress; Domestication.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200238

Accuracy and precision of phytonematode sampling plans

This paper is a collaborative research between the International Water Management Institute (IWMI) and the Agricultural Engineering Research Centre of Taiwan. This study contributes to IWMI’s program on the Comprehensive Assessment of Water Management in Agriculture. The research in 2003 consists of two components. First, research in Taiwan continues on estimating the positive and negative externalities of paddy-rice production. Second, research is being conducted in Sri Lanka to assess more broadly the impact of water resource development. In addition, two extensive literature reviews have been completed

Tipo: Working or Discussion Paper

Palavras-chave: Irrigation programs; Drainage; Rice; Crop production; Case studies; Consumer/Household Economics; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies.

Ano: 2004

URL: http://purl.umn.edu/92407

CIGR Journal

Abd-Elgawad, Mahfouz Mohamed Mostafa.

Sampling accuracy and precision are basic to nematode research and rational management decision. Taylor's Power Law is used to determine sample size. The published power law parameters are used here differently to define levels of reliability associated with a fixed, cost-determined, sample size. Such levels may provide the decision-maker with more informative data on sampling methods and their reliabilities. Instead of solving for unknown sample number, the rearranged equation to solve for sampling accuracy permitted the use of exact Student’s t-values. The t-values for confidence limits and standard normal variate were used. Both statistical techniques resulted in identical confidence band, in terms of being below, at, or above the economic threshold...

Acondicionamento do arroz em medas.

Palavras-chave: Action thresholds; Berseem clover; Citrus; Economics; Nematode distribution; Rice.

Ano: 2018

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4371

CAMPOS, I. S.; MEDEIROS, J. A..

A prática de acondicionamento do arroz em medas, há muito utilizada na Ásia, Índia e Japão, vem sendo empregada em alguns estados brasileiros e , neste trabalho, procurou-se comprovar a viabilidade de seu uso nas condições climáticas do Acre.

Tipo: Comunicado Técnico (INFOTECA-E)

Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Factores ambientales; Envasado; Rendimiento de los cultivos; Oriza sativa; Secado.; Secagem natural; Arroz; Acondicionamento; Meda; Condição ambiental; Rendimento; Características Agronômicas.; Rice; Packaging; Drying; Environmental factors; Agronomic traits; Crop yield..

Ano: 1982

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492320

Adoption and impacts of zero tillage as a resource conserving technology in the irrigated plains of South Asia

Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Haryana, India

Erenstein, Olaf; Farooq, Umar; Malik, R.K.; Sharif, Muhammad.

The recent stagnation of productivity growth in the irrigated areas of the Indo-Gangetic Plains of South Asia has led to a quest for resource-conserving technologies that can save water, reduce production costs and improve production. The present synthesis of two detailed country studies confirmed widespread adoption of zero tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State (34.5% of surveyed households) and Pakistan’s Punjab province (19%). The combination of a significant “yield effect” and “cost-saving effect” makes adoption worthwhile and is the main driver behind the rapid spread and widespread acceptance of ZT in Haryana, India. In Punjab, Pakistan, adoption is driven by the significant ZT-induced cost savings for wheat...

Tipo: Report

Palavras-chave: Zero tillage; Rice; Wheat; Water conservation; India; Pakistan; Haryana; Punjab; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Land Economics/Use; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Risk and Uncertainty.

Ano: 2007

URL: http://purl.umn.edu/91816

Adoption and Impacts of Zero-Tillage in the Rice-Wheat Zone of Irrigated Punjab, Pakistan

Erenstein, Olaf; Malik, R.K.; Singh, Sher.

This study documents the adoption and impacts of zero-tillage (ZT) wheat in the rice-wheat systems of India’s Haryana State primarily drawing on a detailed empirical survey of 400 rice-wheat farmers. Our random stratified sample revealed 34.5% to be ZT wheat adopters and a quarter of the wheat area in the surveyed communities to be under ZT. The study suggests the potential for further diffusion but also flags the issue of disadoption (10%). ZT adopters, non-adopters, and disadopters differ significantly in terms of their resource bases, with adopters typically showing the most favorable values. ZT drastically reduces tractor operations in farmers’ ZT wheat fields from an average of 8 passes to a single pass, implying a saving of 6 tractor hours and 36...

Tipo: Report

Palavras-chave: Wheat; Rice; Agricultural development; Innovation adoption; Drilling equipment; Farming systems; Zero tillage; Production costs; Credit; Income; India; Crop Production/Industries; E16; F08.

Ano: 2007

URL: http://purl.umn.edu/56092

Farooq, Umar; Sharif, Muhammad; Erenstein, Olaf.

This study documents the adoption and impacts of zero-tillage (ZT) wheat in the ricewheat systems of Pakistan’s Punjab province primarily drawing on a detailed empirical survey of 458 rice-wheat farmers. Our random stratified sample revealed 19% to be ZT wheat adopters and a similar share of the wheat area in the surveyed communities to be under ZT. The study suggests that diffusion has stagnated and also flags the issue of disadoption (14%). ZT adopters, non-adopters, and disadopters differ significantly in terms of their resource bases, with adopters typically showing the most favorable values. ZT drastically reduces tractor operations in farmers’ ZT wheat fields from an average of 8 passes to a single pass, implying a saving of 7 tractor hours and 35...

Tipo: Report

Palavras-chave: Wheat; Rice; Agricultural development; Drilling equipment; Economic analysis; Innovation adoption; Farming systems; Cropping patterns; Production costs; Zero tillage; Pakistan; Crop Production/Industries; E16; F08.

Ano: 2007

URL: http://purl.umn.edu/56095

Adoption of New Seed Varieties Under Production Risk: An Application to Rice in Iran

Bakhshoodeh, Mohamad; Shajari, S..

This paper focuses on linkage between new rice seed varieties and production risk and also factors affecting adoption of these varieties in Iran. Farm-level data were collected from a sample of 154 rice farms located in two major districts of Fars province in Southern Iran for 2001-02. The risk-premium associated with the use of seed is estimated following by analyzing a moment-based production risk approach. The results show that the risk premium increases with new seed varieties in the lack of appropriate production conditions implying that new seed varieties is a riskincreasing input and involves a higher cost of risk. However, under suitable production conditions, the cultivation of new rice varieties on average ensures greater yield and at the same...

Tipo: Conference Paper or Presentation

Palavras-chave: Production risk; Moments-based estimation; New seed varieties; Rice; Crop Production/Industries; D8; Q12; Q16.

Ano: 2006

URL: http://purl.umn.edu/25578

Adoption of Resource Conservation Technologies in Indo-Gangetic Plains of India: Scouting for Profitability and Efficiency

Adubação mineral de arroz em latossolo de campo cerrado de Roraima.

Singh, N.P.; Singh, R.P.; Kumar, Ranjit; Vashist, A.K.; Khan, Farida; Varghese, Nisha.

This study has evaluated the superiority of resource conservation technologies (RCTs) over conventional methods of cultivation and has identified the factors influencing adoption of these technologies. It has provided succinct evidences from four states — Bihar, Haryana, Punjab and Uttar Pradesh — by comparing the adopters and non-adopters of RCTs in the rice-wheat cropping system of the Indo-Gangetic Plains of India. The study has highlighted superiority of RCTs over the conventional practices in terms of cost saving and efficient inputs-use. However, there is a need to internalize the RCTs in their totality by applying plans and strategies based on local dynamics. The study has suggested the need of policy formulations for dissemination and wider...

Tipo: Journal Article

Palavras-chave: Resource conservation technologies; Economic efficiency; DEA approach; RCTs; Indo-Gangetic Plains; Wheat; Rice; Agricultural and Food Policy; Q30; Q34; Q32.

Ano: 2011

URL: http://purl.umn.edu/109410

COUTO, W. S.; CORDEIRO, A. C. C.; ALVES, A. A. C..

bitstream/item/60093/1/CPATU-PA74.pdf

Tipo: Séries anteriores (INFOTECA-E)

Palavras-chave: Roraima; Brasil; Mineral nutrients; Zincsulphate.; Análise Econômica; Arroz; Cloreto de Potássio; Cerrado; Nutriente Mineral; Uréia.; Sulfato de Zinco; Superfosfato Triplo; Amazonia; Economic analysis; Potassium chloride; Rice; Superphosphate; Urea..

Ano: 1982

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380935

Adubação mineral do arroz em solos de campo cerrado de Roraima.

COUTO, W. S.; CORDEIRO, A. C. C.; ALVES, A. A. C..

bitstream/item/60128/1/CPATU-PA47.pdf

Tipo: Séries anteriores (INFOTECA-E)

Palavras-chave: Mineral nutrients.; Análise Econômica; Arroz; Cloreto de Potássio; Nutriente Mineral; Uréia.; Superfosfato Triplo; Economic analysis; Potassium chloride; Urea.; Superphosphate; Rice.

Ano: 1981

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379483

Agricultura conservacionista: solução de inovação tecnológica e econômica para a produção diversa em solos arenosos do Juruá, Acre, Sudoeste da Amazônia - resultados integrados de 13 Anos.