نتایج جستجو برای: soil fertility where the input labour

تعداد نتایج: 16142499  

Journal: :تحقیقات آب و خاک ایران 0
مینا ایمانی کارشناس ارشد رشتة خاک شناسی دانشکدة کشاورزی دانشگاه تربیت مدرس حسینعلی بهرامی دانشیار دانشکدة کشاورزی دانشگاه تربیت مدرس رضا سکوتی اسکویی استادیار پژوهش مرکز تحقیقات کشاورزی و منابع طبیعی استان آذربایجان غربی فائزه قربان نژاد کارشناس ارشد رشتة سنجش از دور دانشگاه تربیت مدرس

salinization and alkalization are the most problem in the arid and semi-arid regions, where precipitation is low than evapotranspiration. under such a climatic condition, soluble salts are accumulated in the soil, which cause lessening of the soil productivity and fertility. so, the identification of the salt affected areas is essential for sustainable soil management. the specific objective of...

Journal: :Journal of environmental quality 2011
Jérôme Cortet Dragi Kocev Caroline Ducobu Sašo Džeroski Marko Debeljak Christophe Schwartz

The amount of biosolids recycled in agriculture has steadily increased during the last decades. However, few models are available to predict the accompanying risks, mainly due to the presence of trace element and organic contaminants, and benefits for soil fertility of their application. This paper deals with using data mining to assess the benefits and risks of biosolids application in agricul...

2000
B. Kaya

Agricultural production in the Koutiala region, southern Mali, is based on cash sources (cotton and groundnut), cereal sources (maize, sorghum, millet), and a store of wealth (livestock). In these low-input farming systems, crop production is seriously constrained by soil fertility decline. Research is being conducted in the region to investigate the potential of improved fallows planted to leg...

Journal: :Animal : an international journal of animal bioscience 2007
A Legarra M Ramón E Ugarte M D Pérez-Guzmán

Economic weights have been estimated in two breeds (Latxa and Manchega) using economic and technical data collected in 41 Latxa and 12 Manchega dairy sheep flocks. The traits considered were fertility (lambing per year), prolificacy (number of lambs), milk yield (litres) and longevity (as productive life, in years). A linear function was used, relating these traits to the different costs in the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم انسانی 1391

from 1950s onward, new theories and critical approaches burgeoned across humanities. these theories were context-oriented; as a result, the analysis of discursive practices gained significance. thus, social, political, historical and cultural discourses that have been hitherto marginalized and considered inferior to literary texts, were introduced as important texts to be analyzed by critics. o...

2012
John Gum Amy L. Shober

Soils used for vegetable production in Florida are sandy, have low organic matter content and fertility, and can support the growth of soil-borne pathogens. Some growers choose to apply compost as an antagonistic suppression approach to combat soil-borne disease effects on crop yields or to increase organic matter and improve soil fertility. The objective of this on-farm study was to determine ...

Journal: :پژوهش های زراعی ایران 0
محسن جهان محمد بهزاد امیری مهسا اقحوانی شجری محمد کاظم تهامی

in recent years, in order to enhance the health of agroecosystems, concerns on ecological inputs especially to produce medicinal plants, has been increased. in order to evaluate the effects of winter cover crops on pgprs activities and soil nitrogen content in simultaneous application of organic manures and biological fertilizer in a low input production system of cucurbita pepo under minimum t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1389

this thesis is a study on insurance fraud in iran automobile insurance industry and explores the usage of expert linkage between un-supervised clustering and analytical hierarchy process(ahp), and renders the findings from applying these algorithms for automobile insurance claim fraud detection. the expert linkage determination objective function plan provides us with a way to determine whi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1382

‏‎translation as a comunicative process is always said to be associated with various aspects of meaning loss or gain. subtitling as a mode of translating, due to special discoursal and textual conditions imposed upon it, is believed to be an obvious case of this loss or gain. presenting the spoken sound track of a film in writing and synchronizing the perception of this text by the viewers with...

Journal: Desert 2019
R. Mohajer, Z. Rasaei

Although fertility capability classification (FCC) has high performance in land evaluation and soil maps interpretation, so far it has been less attended in land evaluation studies. Therefore, qualitative (FCC method) and quantitative (Riquer index) land fertility capability evaluation for Wheat and Rice cultivation and comparison of Soil Taxonomy and WRB classification with FCC were chosen as ...

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