نتایج جستجو برای: soil s

تعداد نتایج: 882813  

2015
Aneta Lipińska Jadwiga Wyszkowska Jan Kucharski

Polycyclic aromatic hydrocarbons are organic compounds with highly toxic, carcinogenic, and mutagenic properties, which adversely affect the basic biological parameters of the soil, including the count of microorganisms, and the enzymatic activity. In addition to disturbances to the biological activity of the soil, PAHs may also exhibit toxic effects on plants. In view of the above, the study i...

2005
S. Schlaeger

A fast TDR-inversion technique for the reconstruction of spatial soil moisture content S. Schlaeger Soil Moisture Group (SMG), University of Karlsruhe, Germany SCHLAEGER – mathematical solutions, Karlsruhe, Germany Received: 2 May 2005 – Accepted: 17 May 2005 – Published: 13 June 2005 Correspondence to: S. Schlaeger ([email protected]) © 2005 Author(s). This work is licensed under a Crea...

2016
Natthanej Luplertlop Potjaman Pumeesat Watcharamat Muangkaew Thanwa Wongsuk Ana Alastruey-Izquierdo

The Scedosporium apiospermum species complex, comprising filamentous fungal species S. apiospermum sensu stricto, S. boydii, S. aurantiacum, S. dehoogii and S. minutispora, are important pathogens that cause a wide variety of infections. Although some species (S. boydii and S. apiospermum) have been isolated from patients in Thailand, no environmental surveys of these fungi have been performed ...

2017
James W. Raich

The principal objective of this study was to determine if there is consistent temporal variability in soil respiration from different forest plantations in a lowland tropical rainforest environment. Soil respiration was measured regularly over 2004 to 2010 in replicated plantations of 15to 20-year-old evergreen tropical trees in lowland Costa Rica. Statistically significant but small difference...

2011
Rongzhong Ye J. Mabry McCray Alan L. Wright

The objective of this study was to assess the functional response of microbial communities to sulfur amendment in calcareous organic soils of the Everglades Agricultural Area in south Florida. Soils under sugarcane cultivation were amended with elemental S at four rates up to 448 kg S ha to decrease pH and enhance nutrient availability. Soil samples were collected 2, 6, 9, and 13 months after S...

2007
Cheryl Palm Pedro Sanchez Sonya Ahamed Alex Awiti

Soils are viewed in the context of ecosystem services, soil processes and properties, and key attributes and constraints. The framework used is based on the premise that the natural capital of soils that underlies ecosystem services is primarily determined by three core soil properties: texture, mineralogy, and soil organic matter. Up-todate descriptions and geographical distribution of soil or...

Journal: :Ecotoxicology 2012
Yuanhu Shao Weixin Zhang Zhanfeng Liu Yuxin Sun Dima Chen Jianping Wu Lixia Zhou Hanping Xia Deborah A Neher Shenglei Fu

Both soil nematodes and microorganisms have been shown to be sensitive bioindicators of soil recovery in metal-contaminated habitats; however, the underlying processes are poorly understood. We investigated the relationship among soil microbial community composition, nematode community structure and soil aluminum (Al) content in different vegetated aluminum-rich ecosystems. Our results demonstr...

2017
Amrakh I. Mamedov Chi-hua Huang Fazil A. Aliev Guy J. Levy

Understanding the effects of soil intrinsic properties and extrinsic conditions on aggregate stability is essential for the development of effective soil and water conservation practices. Our objective was to evaluate the combined role of soil texture, aggregate size and application of a stabilizing agent on aggregate and structure stability indices (composite structure index [SI], the α and n ...

The protection and improvement of natural resources especially for desert vegetation need a comprehensive recognition of natural resources and relationship on Soil characteristics. One of the most important species growing in sabzevar desert is Stipagrostis pennata and in the current research the relationship between the physicochemical properties of the soils and growth characteristics of the ...

Journal: :علوم گیاهان زراعی ایران 0
سید محمد سیدی دانشجوی دکتری اکولوژی گیاهان زراعی، دانشکدۀ کشاورزی دانشگاه فردوسی مشهد محمد خواجه حسینی استادیار دانشکدۀ کشاورزی دانشگاه فردوسی مشهد پرویز رضوانی مقدم استاد دانشکدۀ کشاورزی دانشگاه فردوسی مشهد حمید شاهنده استاد گروه علوم خاک و گیاه دانشگاه تکزاس آمریکا

in order to evaluate the effect of increasing soil soluble phosphorus (p) and its effect on nitrogen (n) and p uptake, p uptake efficiency and p harvest index of black seed (nigella sativa l.) in a calcareous soil; a field experiment was conducted as factorial layout based on a randomized complete block design with three replications at research station, faculty of agriculture, ferdowsi univers...

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