نتایج جستجو برای: cropping pattern

تعداد نتایج: 357359  

ژورنال: علوم آب و خاک 2009
الوانچی, محسن, صبوحی, محمود,

Optimum allocation on inputs is more difficult when there are several objectives in agriculture activities. For this, it is necessary using methods that several objectives approximate to ideal point simultaneously. IN addition, no attention to farmer preferences in farm planning causes the troubles for farmers in accepting planning. So in present study it is tried to attention these subjects wi...

J.S. Rawat M. Yadav M.P. Sharma P. Bisht P. Kumar R.S. Hooda

Agriculture resources reflected to be one of the most imperative renewable and dynamic natural resources. Agricultural sustainability has the premier priority in all countries, whether developed or developing. Cropping system analysis is indispensable for grinding the sustainability of agricultural science. Crop alternation is stated as growing one crop after another on the same piece of la...

الوانچی, محسن, صبوحی, محمود,

Optimum allocation on inputs is more difficult when there are several objectives in agriculture activities. For this, it is necessary using methods that several objectives approximate to ideal point simultaneously. IN addition, no attention to farmer preferences in farm planning causes the troubles for farmers in accepting planning. So in present study it is tried to attention these subjects wi...

Journal: :آب و خاک 0
نجمه مجیدی امین علیزاده محمد قربانی

abstract in refrence to un appropriate time and place dispersal of precipitation in iran and having low efficiency in agriculture, water as the most limitative factor in agriculture is discussing. in this study, the existing pattern of mashhad-chenaran plain is considering and with gathering data related to 1388, with target of decrease in water consuming, optimum and nearly optimum cropping pa...

ژورنال: علوم آب و خاک 2008
زیبایی, منصور , شعبانی, محمد کاظم , هنر, تورج,

Limitations of rainfall and surface water resources farmers have to use both surface and subsurface resources for growing different crops. In this study optimal management of irrigation water allocation and cropping pattern utilizing conjunctive use of surface and subsurface water resources is studied. Also the effect of reducing water consumption in different growth stages with different irrig...

Journal: :international journal of agricultural management and development 2015
roya eshraghi samani alireza poursaeed

in this study, the comparative advantage of main agricultural products and its relation to cropping pattern was studied in ilam province. for data analyzing the comparative advantage and government policies effects indices, policy analysis matrix (pam) were used. the obtained results for the comparative advantage indices of domestic resource cost (drc), social cost benefit (scb) and net social ...

2013
M. K. ALAM N. SALAHIN

A series of field experiments was conducted at BARI central farm to observe the changes in soil densities, moisture retentive properties, and crop productivity as influenced by different tillage depths and cropping patterns. The tillage depth showed significant effect on wheat yield. Grain yield of wheat significantly increased from 2.86 t/ha (minimum tillage depth) to 5.33 t/ha (tillage depth ...

Journal: :اقتصاد و توسعه کشاورزی 0
قادر دشتی پروین قادری نژاد

abstract with consideration to the resource limitation, it seems necessary to design cropping pattern scientifically in order to increase productivity of production factors and to decrease production average costs. this studyaimed at identifying the optimum cropping pattern based on comparative advantage in three counties of ilam province including darreh shahr, ivan, and shirvan chardaval. to ...

زیبایی, منصور , شعبانی, محمد کاظم , هنر, تورج,

Limitations of rainfall and surface water resources farmers have to use both surface and subsurface resources for growing different crops. In this study optimal management of irrigation water allocation and cropping pattern utilizing conjunctive use of surface and subsurface water resources is studied. Also the effect of reducing water consumption in different growth stages with different irrig...

Journal: :ecopersia 0
mohammad reza dahmardeh ghaleno former ph.d. student, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran. at present: assistant professor, department of watershed and rangeland management, university of zabol, zabol, iran vahedberdi sheikh associate professor, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran amir sadoddin associate professor, department of watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran mahmood sabouhi sabouni professor, department of agricultural economics, ferdowsi university of mashhad, mashhad, iran

the optimal cropping pattern for sistan water resources management was determined through a goal programming technique within the gams programming environment. results showed that the optimum cultivation area and net profit of the agricultural sector in the sistan region could increase up to 18.1 and 39.8%, respectively, compared to the current status. an increase in the farm irrigation efficie...

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