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A gender performance indicator for irrigation: Concepts, tools and applications AgEcon
van Koppen, Barbara.
Although gender issues are today a priority on the agendas of irrigation policy makers, interventionists, farm leaders and researchers, there is still a considerable gap between positive intentions and concrete action. An important but hitherto ignored reason for this is the lack of adequate generic concepts and tools that are policy-relevant and can accommodate the vast variation in irrigation contexts worldwide. The Gender Performance Indicator for Irrigation (GPII) aims to fill this gap. In any particular scheme, this tool diagnoses the gendered organization of farming and gender-based inclusion or exclusion in irrigation institutions. It informs irrigation agencies what they themselves can do for effective change-if necessary. The tool also identifies...
Tipo: Report Palavras-chave: Gender; Women; Irrigation management; Water management; Policy; Decision making; Performance evaluation; Indicators; Irrigated farming; Farming systems; Case studies; Water users' associations; Leadership; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Productivity Analysis.
Ano: 2002 URL: http://purl.umn.edu/44562
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A GENERAL FRAMEWORK FOR EVALUATION OF CNP'S GRAIN PRICE POLICIES IN COSTA RICA AgEcon
Cervantes, Carlos F..
Among the different institutions through which the Costa Rican government influences production and internal marketing of agricultural commodities, the Consejo Nacional de Produccion (CNP) is the most important one. The Consejo is given by law a great deal of authority in fomenting production and stabilizing prices of food products. It is also entitled to perform a wide range of activities and marketing functions affecting the food system (buying and selling, assembling, transporting, storing and processing, importing and exporting, price fixing, input distribution, etc.). Because of the strategic role of agriculture in the country, and due to very significant influence of the Consejo's intervention upon production, marketing and consumption in...
Tipo: Thesis or Dissertation Palavras-chave: Agricultural and Food Policy; Crop Production/Industries.
Ano: 1975 URL: http://purl.umn.edu/11192
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A GENERAL FRAMEWORK FOR GRAIN BLENDING AND SEGREGATION AgEcon
Sivaraman, Eswar; Lyford, Conrad P.; Brorsen, B. Wade.
The Hennessy and Wahl model of optimal grain blending and segregation (GBS) is extended to the case where it is not possible to separate components within a load. Analytical solutions are not available when segregation is the optimal strategy, and so solutions are obtained with nonlinear optimization. The model is then used to determine the optimal sorting of hard red winter wheat by protein content. Most of the benefits from sorting can be obtained with only two bins.
Tipo: Journal Article Palavras-chave: Blending; Grain; Segregation; Crop Production/Industries.
Ano: 2002 URL: http://purl.umn.edu/14723
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A Genetically Engineered Crop's Impact on Pesticide Use: A Revealed-Preference Index Approach AgEcon
Sydorovych, Olha; Marra, Michele C..
A revealed-preference-based method is proposed for assessment of the environmental and human health impact of genetically engineered (GE) crops. This method employs the relative pesticide toxicity information from farmers' pesticide choices combined with volume of pesticides as an alternative to previous methods which are based on volume only, on number of pesticide applications, or on stated preferences. The method is applied to estimate the changes in the impact of herbicides after environmental and health perspective. The results indicate that, on average, a reduction in herbicide human heath and environmental impacts occurs when farmers adopt RR soybean varieties.
Tipo: Journal Article Palavras-chave: Environmental impact; Genetically engineered crops; Pesticide risk index; Revealed preference information; Roundup Ready soybeans; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007 URL: http://purl.umn.edu/7083
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A global perspective on water scarcity and poverty: achievements and challenges for water resource management AgEcon
Barker, Randolph; van Koppen, Barbara; Shah, Tushaar.
Tipo: Book Palavras-chave: Water scarcity; Poverty; Water resources development; Groundwater management; Food security; Irrigated farming; Agricultural production; Tube well irrigation; Sustainability; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Production Economics; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/118302
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A Globally Flexible Model for Crop Yields Under Weather Risk AgEcon
Cooper, Joseph C.; Wallander, Steven.
The literature on climate change and crop yields recognizes the need to allow for highly non-linear marginal effects. This study combines these two areas of the literature by using Flexible Fourier Transforms (FFT’s) to ensure flexibility for both the time trend and the weather effects. This study also illustrates how FFT’s can be combined with quantile regression (QR) to provide both robustness to outliers and information on the scale effects of time and weather variables. For U.S. county level data on corn, soybeans, and winter wheat, we estimate the relationship between yield and temperature and precipitation using a traditional parametric expected-yield estimator, our quantile-FFT regression evaluated at the median, and our QR-FFT regression that...
Tipo: Conference Paper or Presentation Palavras-chave: Crop yield distributions; Flexible fourier transforms; Quantile regression; Crop Production/Industries; Risk and Uncertainty.
Ano: 2010 URL: http://purl.umn.edu/103560
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A GROSS MARGIN COMPARISON OF RETURNS TO NEMATICIDE TREATMENT IN CONTINUOUS AND ROTATION TRITICALE-SOYBEAN PRODUCTION AgEcon
Stark, C. Robert, Jr.; Dowler, C.C.; Johnson, A.W.; Baker, S.H..
A study of irrigated strip-till soybean production compared gross margins over nematicide expense for a continuous triticale-soybean system versus a two-year rotation system alternating triticale-soybean with triticale-cotton. Half of the replicated plots under each system received nematicide treatment. Gross margins were calculated using recorded yields and Georgia average market prices by marketing years. Mean gross margins for untreated plots were not significantly different between crop-sequence systems. Within each system, however, mean gross margins were significantly higher for plots not receiving nematicide treatment versus treated plots, even when treated plots produced greater yields.
Tipo: Journal Article Palavras-chave: Conservation tillage; Gross margin; Irrigation; Meloidogyne incognita; Root-knot nematode; Rotation; Soybean; Triticale; Crop Production/Industries.
Ano: 2000 URL: http://purl.umn.edu/14715
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A GSD ESTIMATION OF THE RELATIVE WORTH OF COVER CROPS IN COTTON PRODUCTION SYSTEMS AgEcon
Giesler, G. Grant; Paxton, Kenneth W.; Millhollon, E.P..
Cover crops can help reduce the negative environmental impacts of cotton production. Using time series yield data, this study utilizes generalized stochastic dominance to evaluate the relative worth, via risk premiums, of three cover crop and two conventional production systems based on expected net returns of each system and decision maker risk attitude. Results indicate, within the limitation of the study, two cover crop regimes possess a high degree of dominance over conventional systems. Determination of the dominant regime depends upon the risk attitude of a specific decision maker. This research suggests cover crop production systems may be feasible alternatives to conventional practices.
Tipo: Journal Article Palavras-chave: Crop Production/Industries; Environmental Economics and Policy.
Ano: 1993 URL: http://purl.umn.edu/30821
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A Guide to the Zygotic Embryo Culture of Coconut Palms (Cocos nucifera L.) AgEcon
Ashburner, G.R.; Faure, M.G.; Tomlinson, D.R.; Thompson, W.K..
Tipo: Report Palavras-chave: Crop Production/Industries.
Ano: 1995 URL: http://purl.umn.edu/113904
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A hazai zöldség- és gyümölcságazat fejlődési kilátásai AgEcon
Erdesz, Ferencne.
A magyarországi zöldség- és gyümölcságazat felkészülése az uniós csatlakozásra nem volt igazán eredményes, uniós tagságunk eddigi tapasztalatai, eredményei is felemásak. A csatlakozásnak eddig több a negatív, az ágazat jövőjét veszélyeztető következménye, mint a pozitív hozadéka. A korábbi gyengeségek – alacsony szervezettség, elavult műszaki színvonal, hiányos logisztikai rendszerek, elaprózott birtokstruktúra, szélsőségesen differenciált termelési (gazdálkodási) színvonal – következtében itthon piacvesztés, strukturális feszültségek jöttek létre. Későn és lassan indult meg a gazdák összefogása, együttműködése, értékesítő tevékenységük megszervezése. A termelők gyenge piaci alkuereje kedvezőtlenül befolyásolta mind az értékesítést, mind a...
Tipo: Journal Article Palavras-chave: Termelés; Versenyképesség; Szervezettség; Kilátások; Fejlesztési feladatok; Production; Competitiveness; Organisation; Prospects; Development tasks; Agribusiness; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/57736
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A hazai zöldségtermelés megújítása AgEcon
Hodossi, Sandor; Dudas, Laszlo; Fari, Miklos Gabor.
Az éghajlatváltozás hatásai a minőségi termelés követelményei, a rentábilis termelés igénye, a termeléstechnológiai elemek megújításának, korszerűsítésének szükségessége egyaránt sürgetik a fenti követelményeket szem előtt tartó, annak megfelelni akaró módszert, a szabadföldi intenzív termelést, melynek legfontosabb elemei: az időszakos talaj-, növény- és légtértakarás, a víztakarékos öntözési módok alkalmazása és a retardált műtrágya használata. Az időszakos talaj-, növény- és légtértakarással a szedési időszak meghosszabbítható, és egyúttal javítható a talaj vízgazdálkodása, valamint visszaszorítható a gyomosodás. A mikroöntözés alkalmazásával, azonos vízmennyiséggel kétszer akkora terület öntözhető. Retardált (fékezett lebomlású) műtrágyák...
Tipo: Journal Article Palavras-chave: Zöldségtermelés; Feldolgozóipar; Speciális készítmények; Tájtermelés; Intenzív termesztés; Vegetable production; Territory; Assortment; Canning industry; Special products; Growing regions; Intensity; Crop Production/Industries; Farm Management.
Ano: 2010 URL: http://purl.umn.edu/99199
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A Hedonic Analysis on the Implicit Values of Fresh Tomatoes AgEcon
Huang, Chung L.; Lin, Biing-Hwan.
The food habits and dietary patterns of American consumers are changing and they are increasingly demanding food products that possess certain attributes relating to how the food was produced or processed. The objectives of the study are to analyze household purchase of fresh tomatoes and to determine the magnitudes of the price premium paid for the organic tomatoes by estimating a hedonic price model. The study uses the 2003 ACNielsen Homescan panel data. The data set represents a nationally representative panel of U.S. households, which provide food purchase data for at-home consumption. For empirical implementation, parameters of the hedonic model were estimated using the Box-Cox transformation procedure. The results indicated that consumers value the...
Tipo: Conference Paper or Presentation Palavras-chave: Box-Cox transformation; Fresh tomatoes; Hedonic price; Organic produce; Product attributes; Crop Production/Industries; D1; Q11.
Ano: 2006 URL: http://purl.umn.edu/25404
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A hedonic approach to estimating the supply of variety attributes of a subsistence crop AgEcon
Edmeades, Svetlana.
The paper extends the household hedonic model, as a non-market valuation tool, by estimating a supply function for variety attributes of a subsistence crop in a developing country. The model is applied to bananas in Uganda, making use of disaggregated data on variety-specific farm-gate banana bunch prices and attributes. The hedonic analysis is applied at the farm-gate, the first link in the market chain, while accounting for the semi-subsistence nature of banana producing households. Within the framework of the agricultural household, where consumption and production decisions are non-separable, prices reflect the implicit marginal valuation of both consumption and production attributes jointly. The paper is motivated by the need to quantify the value of...
Tipo: Report Palavras-chave: Small farms; Households models; Agricultural sector; Crops; Economic aspects; Crop diversification; Variety attributes; Decision making; Crop Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/55424
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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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A Hedonic Price Analysis of Corn and Soybean Herbicides AgEcon
Vassalos, Michael; Dillon, Carl R..
Herbicides account for approximately 2.2% of total farm expenses and are applied to more than 80% of farmland in the USA. The widespread adoption of herbicides contributed to the increased and relatively cheaper productivity of modern intensively managed agricultural systems in developed countries. The present study uses a hedonic framework to analyze the effect of selected attributes on the price of corn and soybean herbicides. Two different empirical models were estimated separately for the two crops. The data include information on 51 herbicides, 27 for corn and 24 for soybean crops used in Kentucky. Findings indicate that efficacy against weeds and crop response (illustrates the potential of an herbicide to injure a crop) of herbicides are significant...
Tipo: Conference Paper or Presentation Palavras-chave: Hedonic price analysis; Herbicide pricing; Herbicides mode of action; Herbicides characteristics; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Land Economics/Use; Production Economics; Productivity Analysis.
Ano: 2010 URL: http://purl.umn.edu/109419
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A HEDONIC PRICE STUDY OF PESTICIDES IN FRUITS AND VEGETABLES; Proceedings of the Fifth Joint Conference on Agriculture, Food, and the Environment, June 17-18, 1996, Padova, Italy AgEcon
Antonovitz, Frances; Liu, Donald J..
This study estimates a hedonic price equation to assess consumers' willingness-to-pay for reduction in pesticide residues in fifteen fruits and vegetables. A unique feature of the study is its employment of the FDA's Total Diet Study data which attempts to measure actual pesticide ingestion by the American public in table-ready or prepared foods. The results indicate that consumers would be willing to pay approximately $.08 per pound to reduce pesticeds by one part per million in the prepared fruits and vegetables that they consume.
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries.
Ano: 1996 URL: http://purl.umn.edu/14389
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A INFLUÊNCIA DA PRODUÇÃO INTERNA E DAS IMPORTAÇÕES ORIZÍCOLAS DO MERCOSUL NO PREÇO INTERNO DO ARROZ COM CASCA AgEcon
Sonaglio, Claudia Maria; Zamberlan, Carlos Otavio; Coronel, Daniel Arruda; Silva, Angelita Freitas Da; Farias, Giuliana Mendonca De.
O setor primário brasileiro é de grande importância para sua economia e a lavoura orizícola gaúcha está inserida nesse contexto, também com grande relevância, pois tem significativo número de produtores que auferem seus rendimentos dessa atividade. Entretanto, há uma redução de rentabilidade no setor atribuída às Importações Mercosulinas que, alegam os produtores brasileiros, pressionam os preços internos. Também, o crescimento da produção interna pode causar o mesmo efeito. Esse trabalho busca provar que o arroz importado do Mercosul e a Produção Gaúcha de arroz exercem influencia no preço interno e que as relações entre as variáveis ocorrem de forma curvilinear e não podem ser analisadas por métodos lineares. Para tanto, fez-se uso da estatística...
Tipo: Conference Paper or Presentation Palavras-chave: Mercosul; Setor orizícola; Preço; Mercosur; Orizícula sector; Price; Crop Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/108563
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A KOMPOLTI ŐSZI ÁRPA NEMESÍTÉS HELYE EURÓPÁBAN AgEcon
Muranyi, Istvan; Simon, Anna.
A növénynemesítés fokozatosan romló működési körülményei, a hatékony marketing és a vetőmagkereskedelem hiányosságai, a külföldi fajták nyomása következtében több növényfajban a hazai nemesítés jelentősége csökkent az utóbbi 20 évben, sőt néhány növényfaj nemesítése Magyarországon meg is szűnt. A Kompolton folyó őszi árpa nemesítés eredményesen állt helyt a külföldi fajtaelőállítók nyomásának. Fajtáink kiváló termőképessége mellett, kiemelkedő télállósággal, igen jó szárszilárdsággal, megbízható állóképességgel, összességé-ben kiváló alkalmazkodóképességgel rendelkeznek. Összesen 12 takarmányárpa és 2 őszi sörárpa fajtánkkal minden termesztési választékkal rendelkezünk. 2004-ben az OMMI kísérletekben a korai és a középérésű csoportban is két-két fajtánk...
Tipo: Journal Article Palavras-chave: Növénynemesítés; Új kihívások és irányok; Hybridization; New challenges and directions; Crop Production/Industries; Production Economics.
Ano: 2005 URL: http://purl.umn.edu/54859
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A KUKORICATERMESZTÉS HATÉKONYSÁGÁNAK ÉS EREDMÉNYESSÉGÉNEK VIZSGÁLATA 2003-2006 ÉVI TESZTÜZEMI ADATOK ALAPJÁN AgEcon
Barkaszi, Levente.
Its importance is going to last or even increase in the coming years. That is why the rational and efficient utilisation of the inputs devoted to maize production is equally important from the point of view of the environment and the profit for the farmers. For analysing the question I have examined the production data of Hungarian FADN farms producing more than 5 hectares of maize during 2003-2006. This way taking the four years’ data I have concluded the analysis of 2982 individual and 761 corporate farms. For analysis purposes I have calculated the total direct cost spent on the production of 1 ton of grain maize and grouped the farms into 5 even groups according to this. At each group I have examined the main inputs in connection with maize production,...
Tipo: Book Palavras-chave: Ráfordítás felhasználás; Költségszerkezet; Herbicid felhasználás; Szakértelem; Input use; Cost structure; Herbicide use; Importance of knowledge; Agribusiness; Crop Production/Industries; Production Economics.
Ano: 2008 URL: http://purl.umn.edu/43313
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A LINEAR APPROXIMATE ACREAGE ALLOCATION MODEL AgEcon
Holt, Matthew T..
It is shown that the first-order differential acreage allocation model developed by Bettendorf an Bloome and by Barten and Vanloot, and based on certainty equivalent profit maximization, may be extended to a levels version. The levels model, referred to as a linear approximate acreage allocation model, is potentially useful when panel or cross-sectional data are employed. An empirical application with U.S. state-level corn flex acreage data for the period 1991-95 indicates the feasibility of the approach. Estimated price and scale elasticities are generally larger than previous estimates, and are perhaps indicative of acreage response under the provisions of the 1996 Farm Act.
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1999 URL: http://purl.umn.edu/30792
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