نتایج جستجو برای: soil profile salinity

تعداد نتایج: 418613  

2003
Jean-Pierre Wigneron André Chanzy Jean-Christophe Calvet Albert Olioso Yann Kerr

Microwave radiometry at low frequencies (L-band: 1.4 GHz, 21 cm) is an established technique for estimating surface soil moisture and sea surface salinity with a suitable sensitivity. However, from space, large antennas (several meters) are required to achieve an adequate spatial resolution at L-band. So as to reduce the problem of putting into orbit a large filled antenna, the possibility of u...

Soil salinity is considered as one of the major challenges in coastal agriculture in Bangladesh yet geographical extent of soil salinity and nutrients status have received little or no attention. This study investigated the patterns of soil salinity, total nitrogen, phosphorous, potassium and sulfur between agricultural and fallow land along a 90 km distance from the coastline in Noakhali, Bang...

2001

The main scientific objectives of the Soil Moisture and Ocean Salinity (SMOS) mission are to observe two crucial variables: soil moisture over land surface and sea surface salinity over oceans. The mission should also provide information on root zone soil moisture and vegetation and contribute to significant research in the field of the cryosphere SMOS is a demonstrator with broad and ambitious...

2017
Zhiyu ZUO Xiangnan LI Chao XU Junjie YANG Xiancan ZHU Shengqun LIU Fengbin SONG Fulai LIU Hanping MAO

Zuo Z.Y., Li X.N., Xu C., Yang J.J., Zhu X.C., Liu S.Q., Song F.B., Liu F.L., Mao H.P. (2017): Responses of barley Albina and Xantha mutants deficient in magnesium chelatase to soil salinity. Plant Soil Environ., 63: 348–354. Soil salinity reduces the plant growth and grain yield in barley. The barley mutants Albina and Xantha, deficient in magnesium chelatase, represent a suitable model object...

Journal: :Journal of environmental management 2012
Fernando Visconti José Miguel de Paz María José Molina Juan Sánchez

SALTIRSOIL (SALTs in IRrigated SOILs) is a model for the medium to long term simulation of soil salinity in irrigated, well-drained lands. Once the algorithms were verified, the objective of our study was to validate SALTIRSOIL under one of several water quality and management scenarios in Mediterranean agriculture. Because drip and surface are the most common irrigation systems in irrigated ag...

2015
Daniele Daffonchio Heribert Hirt Gabriele Berg

Drought and salinity are major factors limiting agriculture in many regions in the world, and their importance is predicted to even increase in the near future in parallel with the ongoing global warming and climate changes. Soil and rhizosphere microbes are potential resources for counteracting such abiotic stresses in plants. The knowledge on the roles of root microorganisms in retaining soil...

2017
Fan Yang Jerry M. Baskin Carol C. Baskin Xuejun Yang Dechang Cao Zhenying Huang

Production of heteromorphic seeds is common in halophytes growing in arid environments with strong spatial and temporal heterogeneity. However, evidence for geographic variation (reflecting local adaptation) is almost nonexistent. Our primary aims were to compare the life history traits of two desert populations of this halophytic summer annual Suaeda corniculata subsp. mongolica and to investi...

Journal: Desert 2018
A. Ahmadi, A. Kazemi H. Toranjzar

Soil salinity phenomena are one of the main problems of arid and semi-arid lands. Saline soils constitute a huge part of Iran, and also threaten its neighboring lands. Therefore, in order to optimum exploitation of such soils, qualitative monitoring is necessary. Recently, remote sensing techniques have been increasingly applied in monitoring soil characteristics. The present study was carried ...

Journal: :مهندسی زراعی 0
صفورا جعفری کارشناسی ارشد، گروه خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز مصطفی چرم دانشیار گروه خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز نعیمه عنایتی ضمیر استادیار گروه خاکشناسی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز حسین معتمدی استادیار گروه میکروبیولوژی، دانشکده علوم، دانشگاه شهید چمران اهواز

soil salinity induces a stressful environment for soil micro-organisms and reduces their number and activity. the objective of this research is investigating the effect of different levels of salinity on some of soil biological indicators and also assessing the effect of two types of halotolerant rhizospheric bacteria on the value of these indexes in soil. 35 strains were isolated from saline r...

2016
Pichu Rengasamy Matthew Gilliham

The yield response of various crops to salinity under field conditions is affected by soil processes and environmental conditions. The composition of dissolved ions depend on soil chemical processes such as cation or anion exchange, oxidation-reduction reactions, ion adsorption, chemical speciation, complex formation, mineral weathering, solubility, and precipitation. The nature of cations and ...

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