نتایج جستجو برای: irrigated area

تعداد نتایج: 591575  

2017
Susan C. Loeb SUSAN C. LOEB

Pocket gophers were collected from irrigated alfalfa fields (IRR) and non-irrigated fallow fields (NIRR) in Davis, California, for 2 years. Reproduction was continuous in IRR fields with very little seasonal variation in reproductive activity. In contrast, reproduction in NIRR fields occurred primarily during the rainy season (winter and spring). Females in IRR fields produced approximately twi...

Journal: :دو فصلنامه علمی - تخصصی پژوهش های اقتصاد توسعه و برنامه ریزی 0
الهامر پورمختار دانشجو دکترا اقتصاد کشاورزی دانشگاه آزاد تهران-واحد علوم تحقیقات حامد قادرزاده استادیار گروه اقتصاد کشاورزی دانشگاه کردستان

the current study attempted to investigate the mathematical sturcuture of cost function of irrigated wheat crop in kurdistan province. the methodolgy is based on duality assumption. the sample size is 257 farmers for the agricultural year 2011-2012.data was collected byinterviewwith farmers and writing writerquestionnaire.the multistage cluster random sampling used. the results showed that, the...

ژورنال: سلامت و محیط زیست 2018

Background and Objective: The main objective of this study was to evaluate the surface and deep distribution of Pb, Ni and Cu in the wastewater-irrigated area of south of Tehran using GIS and Hydrus. It was expected to find a comprehensive information of heavy metals distribution and their accumulation in the soil.  Materials and Methods: This study was carried out in wastewater-irrigated area...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

‏‎applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...

2004
JAMES A. ENTRY R. E. SOJKA

Inorganic C reactions are among the most important chemical reactions that occur in irrigated soils and may contribute to the total amount of C sequestered in those soils. Because CO2 can escape from soils to the atmosphere or return to precipitate carbonate minerals, soils are open systems with regard to inorganic C. We measured inorganic and organic C stored in southern Idaho soils having lon...

Journal: :Journal of Wildlife Management 2022

For a colonial-nesting bird, like the white-faced ibis (Plegadis chihi), landscape surrounding breeding colony can be important. White-faced must rely on areas outside their for foraging, but this part of life history has received little attention, and management even less so. To address knowledge gap, we conducted road-based driving surveys randomly selected, spatially balanced sample survey a...

Journal: :The Journal of Agricultural Science 1913

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