Consulta: subjectFacets:"Wheat production"
Registros recuperados: 8
Data/hora: 02/06/2024 00:47:54

Revenue volatility faced by Australian wheat farmers
Provedor de dados: 31
Autores: Kingwell,   Ross S.
This paper uses variance decomposition modelling to explore how wheat revenue volatility in Australia has changed spatially and temporally. The components of revenue variance are the variances and covariances of wheat prices, the area of wheat harvested and the yield of wheat. The key finding is that the volatility of wheat revenue (detrended) has more than doubled in every main wheat-growing State in Australia over the last 15 years or so Changes in wheat areas are mostly a minor source of revenue variance. The principal cause of volatility is yield changes with price changes increasing slightly in absolute importance when compared to their adjacent previous period. Greater downside yield risk is often the principal cause of the increased yield variance....
Tipo: Conference Paper or Presentation
Palavras-chave: Risk; Wheat production; Variance decomposition; Wheat farming; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/100572

REGIONAL FACTOR DEMAND IN U.S. WHEAT PRODUCTION
Provedor de dados: 31
Autores: Mao,   Weining; Koo,   Won W.
This study applies a translog cost function to analyze factor demands in four U.S. wheat production regions.  The results show that factor demands are inelastic across all regions.  The interdependent relationships among inputs and the effects of price changes on the relative cost shares are substantially
Tipo: Working or Discussion Paper
Palavras-chave: Wheat production; Factor demand; Elasticity of substitution; Regional comparisons; Translog models; Curvature condition; Demand and Price Analysis; Production Economics.
Ano: 1997
URL: http://purl.umn.edu/23091

Impact of global warming on Chinese wheat productivity
Provedor de dados: 31
Autores: You,   Liangzhi; Rosegrant,   Mark W.; Fang,   Cheng; Wood,   Stanley.
Climate change continues to have major impact on crop productivity all over the world. While many researchers have evaluated the possible impact of global warming on crop yields using mainly indirect crop simulation models, there are relatively few direct assessments on the impact of observed climate change on past crop yield and growth. We use a 1979-2000 Chinese crop-specific panel dataset to investigate the climate impact on Chinese wheat yield growth. We find that a 1 percent increase in wheat growing season temperature reduces wheat yields by about 0.3 percent. This negative impact is less severe than those reported in other regions. Rising temperature over the past two decades accounts for a 2.4 percent decline in wheat yields in China while the...
Tipo: Working or Discussion Paper
Palavras-chave: Global warming; Wheat yield; Production function; Marginal impact; Panel data; Climate; Wheat production; Crop Production/Industries; Environmental Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/58588

Measuring the Efficiency of Wheat Production of Western Australian Growers
Provedor de dados: 31
Autores: Tozer,   Peter R.
Using stochastic frontier analysis, efficiency of production of wheat in Western Australia was studied. The production function model used was a relatively simple input model, consisting of wheat yield, effective rainfall, fertilizer application rates and year of study. Inefficiency was captured in a second model that incorporated machinery capital investment, opening equity level, and year of study. Data covered the production years 2004 through to 2007. The results demonstrated that inefficiency was present in wheat production in Western Australia and that inefficiency increased over the period from 18% in 2004 to 29% in 2007. Higher machinery investment per hectare and opening equity levels reduced inefficiency, due to producers having sufficient...
Tipo: Conference Paper or Presentation
Palavras-chave: Wheat production; Efficiency; Fertiliser; Rainfall.; Farm Management.
Ano: 2010
URL: http://purl.umn.edu/59168

Area response in wheat production: The Australian wheat-sheep zone
Provedor de dados: 31
Autores: Culas,   Richard J.
This paper investigates the key decision parameters of farmers related to the allocation of land between wheat production and pasture for sheep (wool) production. Wheat area supply response, is estimated across the Australian wheat-sheep zone using data for the period 1991 to 2004. Statistical results reveal that wheat growers in Western Australia are more price responsive than growers in the eastern states. Area adjustment is not significantly different between the regions. Rainfall has a positive influence on wheat production while time-related exogenous factors such as technical progress seemed to have little influence on the wheat yield over this period.
Tipo: Article
Palavras-chave: Wheat area supply response; Farmer‟s decision parameters; Wheat production; Australian wheat-sheep zone; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/120909

Farmer management of production risk on degraded lands: the role of wheat genetic diversity in Tigray Region, Ethiopia
Provedor de dados: 31
Autores: Di Falco,   Salvatore; Chavas,   Jean-Paul; Smale,   Melinda.
This paper investigates the effects of wheat genetic diversity and land degradation on risk and agricultural productivity in less favored production environments of a developing agricultural economy. Drawing production data from household survey conducted in the highlands of Ethiopia, we estimate a stochastic production function to evaluate the effects of variety richness, land degradation, and their interaction on the mean and the variance of wheat yield. Ethiopia is a centre of diversity for durum wheat and farmers manage complex variety mixtures on multiple plots. Econometric evidence shows that variety richness increases farm productivity. Variety richness also reduces yield variability but only for high levels of genetic diversity. Simulations with...
Tipo: Report
Palavras-chave: Land degradation; Wheat production; Productivity; Risk; Genetic diversity; Household surveys; Biodiversity; Stochastic analysis; Crop Production/Industries; Risk and Uncertainty.
Ano: 2006
URL: http://purl.umn.edu/55417

Energy Efficiency and Shadow Costs of Energy Saving in Conventional Agricultural Production: The Case of Czech Wheat Production
Provedor de dados: 31
Autores: Curtiss,   Jarmila; Jelinek,   Ladislav.
Increasing worldwide energy demand and diminishing supplies of fossil fuels have necessitated the development and increasing use of new sustainable energy sources, as well as more parsimonious energy use. In the context of agriculture, research has focused predominantly on the production of bio-energy, while only a limited number of studies have investigated the energy use and possible energy saving in conventional agricultural production. In response to this lack in empirical research this study aims (i) to measure the farm-level energy and cost efficiency of conventional agricultural (wheat) production, (ii) to identify the potential for energy saving in conventional agriculture and quantify its shadow cost, (iii) to identify production technologies and...
Tipo: Conference Paper or Presentation
Palavras-chave: Energy efficiency; Cost efficiency; Shadow cost of energy saving; Agriculture; Czech farm; Wheat production; Agribusiness; Crop Production/Industries; Production Economics; Productivity Analysis; D24.
Ano: 2011
URL: http://purl.umn.edu/103410

Analysis of changes in energy use pattern of wheat crop in two decades – A study of central India
Provedor de dados: 111
Autores: Shrivastava, Atul kumar; guru, prabhat kumar; Khandelwal, N K; Dubey, R K.
For sustainable agriculture a fair balance between different categories of input energy with optimum output need to be established. The main objective of this paper was to investigate the energetics of wheat production for long term (20 years) in central India through a large scale survey which focused on (i) Farmers categories wise energy use pattern (ii) operation wise energy use pattern (iii) source wise energy use pattern. The finding of this research showed that as the farm size increased the input energy per unit was also increased. The input energy was found minimum for marginal farmer’s categories and the maximum energy input for large farmers. The minimum and maximum input energy among all the survey period was found in range of 4780 to 7199 MJ...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural energy; Energy audit; Land holding; Long term survey; Operation-wise energy; Source-wise energy; Wheat production.
Ano: 2022
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6999