نتایج جستجو برای: texture of soil

تعداد نتایج: 21188303  

Adaptation of plants under drought and salinity stress depends directly on the type of soil texture. Therefore, in this research, the morpho-physiological variations of Stachys multicaulis, an Iranian wild endemic plant species, were investigated in different soil textures under drought and salinity stress. For this purpose, plants were cultivated in three different light, medium and h...

2010
Katherine Grote Cale Anger Bridget Kelly Susan Hubbard Yoram Rubin

Accurate characterization of near-surface soil water content is vital for guiding agricultural management decisions and for reducing the potential negative environmental impacts of agriculture. Characterizing the near-surface soil water content can be difficult, as this parameter is often both spatially and temporally variable, and obtaining sufficient measurements to describe the heterogeneity...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده کشاورزی 1389

چکیده توان بالقوه تجاری سلولازها و کاربردهای گوناگون آن ها در بسیاری از صنایع انگیزه ای قوی برای تحقیق در این زمینه طی چند دهه گذشته بوده است. با توجه به کاربردهای فراوان این آنزیم در صنایع غذایی? در این پژوهش تصمیم به جداسازی ریزسازواره های تولید کننده سلولاز از خاک درختان انار، انگور، خرمالو و گردو حیاط دانشکده کشاورزی تربیت مدرس، گرفته شد. در این بین خاک درخت خرمالو به دلیل دارا بودن تعداد ...

Journal: :آب و خاک 0
مریم علیزاده فرهاد میرزایی تیمور سهرابی

abstract rice can be cultivated in various soils but soil with heavy texture and low permeability is more appropriate for its growth than other types of soil texture. it’s assumed that existence of zeolite in soil can be effective for moisture retention and avoiding of occurrence of crack in soil. in order to investigation of the effect of zeolite on moisture status and hydraulic properties of ...

ژورنال: علوم آب و خاک 2017

This research investigated the effects of super absorbentpolymers on root characteristics of Avena fatua under two soil textures and three irrigation regimes. The study was arranged according to a factorial experiment based on a completely randomized design with three replications. Hydrogel compositions included three types of super absorbents (Aquasorb, Boloorab A and Stockosorb) with two leve...

Journal: :بوم شناسی کشاورزی 0
علیرضا کوچکی الهام عزیزی آسیه سیاهمرگویی مریم جهانی کندری

in order to investigate the effects of soil texture and density on corm and flower yield of saffron (crocus sativus l.) an experiment was conducted as a factorial layout based on complete randomized block design with three replications at the faculty of agriculture, ferdowsi university of mashhad during two growing seasons of 2009-2010 and 2010-2011. treatment included 6 soil textures (clay loa...

2015
De-Cai Wang Gan-Lin Zhang Ming-Song Zhao Xian-Zhang Pan Yu-Guo Zhao De-Cheng Li Bob Macmillan Jingdong Mao

Numerous studies have investigated the direct retrieval of soil properties, including soil texture, using remotely sensed images. However, few have considered how soil properties influence dynamic changes in remote images or how soil processes affect the characteristics of the spectrum. This study investigated a new method for mapping regional soil texture based on the hypothesis that the rate ...

Journal: :آب و خاک 0
کمال نبی الهی احمد حیدری روح الله تقی زاده مهرجردی

soil texture is an important soil physical property that governs most physical, chemical, biological, and hydrological processes in soils. detailed information on soil texture variability is crucial for proper crop and land management and environmental studies. therefore, at present research, 103 soil profiles were dogged and then sampled in order to prepare digital map of soil texture in bijar...

Journal: :تحقیقات آب و خاک ایران 0
علیرضا خداشناس دکتری، مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی علیرضا کوچکی استاد، دانشگاه فردوسی مشهد پرویز رضوانی مقدم استاد، دانشگاه فردوسی مشهد امیر لکزیان دانشیار، دانشگاه فردوسی مشهد مهدی نصیری محلاتی استاد، دانشگاه فردوسی مشهد

soil quality is the most suitable index to an assessment of the stability of terrestrial ecosystems, especially agro-ecosystems. to determine the effects of agricultural practices on soil organic matter, species richness and abundance of soil invertebrates, a study was conducted in three regions of razavi and northern khorasan provinces, iran. soil were taken from in each winter wheat field of ...

2016
Luis A. Méndez - Barroso Enrique R. Vivoni Giuseppe Mascaro

Soil depth and texture exert strong controls on the spatial distribution of water and energy fluxes and states in semiarid watersheds. As a result, realistic representations of the spatial soil characteristics within watersheds are important for the improvement of process-based distributed hydrologic modeling applications. In this study, we evaluated the effects of combinations of soil thicknes...

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