نتایج جستجو برای: agricultural systems
تعداد نتایج: 1272109 فیلتر نتایج به سال:
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...
Sustainable agricultural and rural development requires knowledge and information, skills, attitudes and technologies, which run through a network of actors to produce, distribute and use it in a particular place. The model of the Agriculture Knowledge and Information Systems (AKIS) is designed based on this recognition. In Iran, There are about decades of experience in the development of this ...
the main purpose of this study was to investigate the major barriers to application of good agricultural practices (gaps) technologies in sustainability of livestock by ranchers of meshkinshahr. a sample of 120 farmers was selected by using proportional random sampling method. data were collected by means of a questionnaire. validity of questionnaire was determined through agricultural jihad ex...
Introduction Lack of a comprehensive framework is one of the most important challenges in sustainability assessment of Agricultural Exploitation Systems. This is the reason of tunnel vision in many researches in the field of sustainability. The history of Agricultural Exploitation Systems in Iran is back to thousands years ago, when ancient Iranian tried to domesticate wild animals and cerea...
Among the biodiversity of soil microorganisms, bacteria have the basic role in soil functions. In order to determine the diversity and abundance of soil bacteria in arid regions, and also to study the effect of agricultural practices on them, a study was conducted in winter wheat fields on Shirvan, Mashhad and Gonabad. In each region, high and low input fields of winter wheat and a natural syst...
This paper tries to comparatively study agricultural products insurance factors and the international agricultural products insurance systems in developed and developing countries. It analyses these supporting systems typology form the view points of variables such as covered risk factors, program insurer and the insured, insurance projects operational fundamentals, insurance system type (priva...
this study was based on the hypothesis that “ecotourism is an important instrument in sustainable rural development and ecologically-based landscape planning approaches which take the objectives of socio-economic development and nature conservation have an effective role in this issue”. for this purpose, the necessity of ecologically-based landscape planning approaches in the planning and imple...
Studies on sustainable agricultural have not paid adequate attention to farmers' behaviour regarding sustainability. The objectives of this research were: 1) to determine the relationship between socio-economic and farming factors with “sustainable agricultural knowledge”, 2) to predict “sustainable agricultural knowledge” based on socio-economic and farming factors, and 3) to determine the rel...
Studies on sustainable agricultural have not paid adequate attention to farmers' behaviour regarding sustainability. The objectives of this research were: 1) to determine the relationship between socio-economic and farming factors with “sustainable agricultural knowledge”, 2) to predict “sustainable agricultural knowledge” based on socio-economic and farming factors, and 3) to determine the rel...
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