نتایج جستجو برای: Agricultural production decisions

تعداد نتایج: 807042  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1394

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

2005
RUBEN N. LUBOWSKI MICHAEL J. ROBERTS

In theory, lump-sum transfers are a way to redistribute wealth without distorting production decisions. Recent agricultural policy reforms are an unusual large-scale application of this concept. The 1996 Federal Agricultural Improvement and Reform (FAIR) Act removed most price-contingent agricultural subsidies and replaced them with Production Flexibility Contracts—lump-sum payments with few ti...

2017
Chen Ji Hongdong Guo Songqing Jin Jin Yang

China has recorded positive growth rates of grain production for the past eleven consecutive years. This is a remarkable accomplishment given that China's rapid industrialization and urbanization has led to a vast reduction of arable land and agricultural labor to non-agricultural sectors. While there are many factors contributing to this happy outcome, one potential contributing factor that ha...

2012
David J. Muth Douglas S. McCorkle Jared M. Abodeely Joshua Koch Richard Nelson

Agricultural residues have significant potential as a feedstock for bioenergy production, but removing these residues from the land can have negative impacts on soil health. Because of this computational tools are needed that can help guide decisions on the amount of agricultural residue that can be sustainably removed. Models and datasets that can support decisions about sustainable agricultur...

2004
Ling Sun Zhiqing Jin Yu Liu Jilin Zhang Zesheng Zhu

Agricultural Disaster Management System (ADMS) has become an important tool and technology in modern agricultural production. In this paper, we present a new method for the design and implementation of ADMS. This method is based on a new layered architecture model, which integrates flexibly GIS, simulation models and expert system in ADMS and simplifies its design and implementation. This syste...

2011
JORDAN CHAMBERLIN

The opportunities and constraints facing Ethiopian agriculture are strongly influenced by geographical location. Ethiopia’s diverse landscape defines certain agricultural production potentials, access to input and output markets, and local population densities, which determine both labor availability and local demand for food. Understanding the geographical expression of Ethiopia’s agricultural...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2005
Roger C Stone Holger Meinke

Integrated, interdisciplinary crop performance forecasting systems, linked with appropriate decision and discussion support tools, could substantially improve operational decision making in agricultural management. Recent developments in connecting numerical weather prediction models and general circulation models with quantitative crop growth models offer the potential for development of integ...

Energy plays a significant role in today's developing societies. The role of energy demands to make decisions and policy with regard to its production, distribution, and supply. The vital importance of energy, especially fossil fuels, is a factor affecting agricultural production. This factor has a great influence on the production of agricultural products in Iran. The forecast of the con...

Journal: :journal of agricultural science and technology 2015
m. safa s. samarasinghe m. nejat

an artificial neural network (ann) approach was used to model the wheat production. from an extensive data collection involving 40 farms in canterbury, new zealand, the average wheat production was estimated at 9.9 t ha-1. the final ann model developed was capable of predicting wheat production under different conditions and farming systems using direct and indirect technical factors. after exa...

2005
Guilherme F. Marques Jay R. Lund Richard E. Howitt

[1] Farmers make joint water and land use decisions for economic purposes based in part on water availability and reliability. A two-stage economic production model is developed to examine the effects of hydrologic uncertainty and water prices on agricultural production, cropping patterns, and water and irrigation technology use. The model maximizes net expected farm profit from permanent and a...

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