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Showing 1 to 20 of 37 for “"soil salinity"”.
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SOIL SALINITY AND SODICITY OF GALVESTON AND PELICAN ISLANDS, TEXAS
… of the island with seawater, causing elevated soil salinity levels that killed much of the vegetation on the island, including tens of thousands of trees. Residual salinity in soils and groundwater has hampered vegetation re-establishment in some areas.</p> <p>This project aims to create a map …
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Soil Salinity Study in Northern Great Plains Sodium Affected Soil
… and sodium (Na) transport in undisturbed soil columns and to develop a remote sensing technique to characterize salinization in South Dakota soils. Fortyeight undisturbed soil columns (30 cm x 15 cm) collected from White Lake, Redfield, and Pierpont were used to assess the chemical …
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Spatial modeling of soil salinity using remote sensing, GIS, and field data
… was developed to generate accurate predicted soil salinity maps using remote sensing data. The techniques used include integrating field data, geographic information systems (GIS), remote sensing, and spatial modelling techniques. Com and alfalfa crops were selected as indicators of soil …
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Space-time variability of soil salinity in irrigated vineyards of South Africa
Salts present in the soil and surface waters of the Western Cape Province of South Africa represent a limitation to farming activities. Therefore the management of salinity in the landscape, which includes measuring, mapping and monitoring of its behaviour on a regional scale, is the subject of …
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Use of remote sensing to estimate soil salinity and evapotranspiration in agricultural fields
In recent years, methods for detecting soil salinity have improved greatly. This research describes methods to detect soil salinity levels in agricultural lands based on crop conditions and evapotranspiration (ET) using satellite imagery. Elevated levels of soil salinity affect the growth of most …
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Geochemical study of soil salinity in a toposequence near Riebeeck West, South Africa
… investigation of salt distribution in soils of the semi-arid of Western Cape, South Africa, was carried out following a pilot study which revealed widespread soil salinity in the Berg River catchment. The present study looks at the distribution of the salts along a toposequence in a …
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Changes in Soil Salinity Levels with the Use of Recycled Water on Cool Season Vegetables
… to reduce groundwater removal. The dominant soil types in the region are clay loam and clay soils, which are both susceptible to sodium (Na) accumulation and water infiltration problems. Recycled water blended with well water is used to irrigate cool season vegetables (i.e., artichokes, …
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Evaluation of the space-time variability of soil salinity by statistical, geostatistical and bayesian maximum entropy methods
… of space time data and their application to soil salinity. Special emphasis was put on how to characterize soil salinity. Also, the focus was on three groups of methods, i.e. statistical, geostatistical and Bayesian maximum entropy (BME) approaches. Although, the methods were applied to soil …
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Modeling salt movement and halophytic crop growth on marginal lands with the APEX model
Saline soils negatively impact crop productivity in nearly 20% of irrigated agricultural lands worldwide. Cultivation of highly salt-tolerant plants, or halophytes, may increase productivity compared to conventional salt-sensitive crops (i.e., glycophytes), thereby increasing the economic potential …
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Economic assessment of water management in agriculture: managing salinity and waterlogging in the Arkansas River basin and environmental water shortages in the Platte River basin
… about current agricultural practices, soil salinity levels, water table depths, and the response functions of crop yields to both waterlogging and soil salinity are used to estimate the current losses associated with waterlogging and salinization. The average forgone profit across the …
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Quantifying Soil and Groundwater Chemistry in Areas Invaded by Tamarix spp. Along the Middle Rio Grande, New Mexico
… and global levels, with supposed impacts on soil and water chemistry. One of the most often cited mechanisms of ecosystem change by <em>Tamarix</em> is through its ability to deposit salty exudates and salt-rich leaf litter. The degree to which <em>Tamarix</em> relates to elevated soil and …
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Salinity, radon, and radon precursors in the soils of Grand Forks County, North Dakota
… Red River Valley in North Dakota with elevated soil salinity also exhibit higher equivalent uranium (eU) concentrations than soils of lesser salinity. This study examined relationship between soil salinity, radon precursors, radon, and radon progeny in Grand Forks County, North Dakota. …
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A Bioinspired Approach to Engineer the Seed Microenvironment
… problems that are linked to climate change, soil degradation and increasing population. In particular, our objective is to augment agricultural outputs (i.e. crop yield and production) while decreasing inputs (e.g. water, energy, fertilizers, land, pesticides) by developing new technology to …
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Crop traits to improve plant water relations under abiotic stresses
… and threat food security: agricultural drought, soil salinity, and nitrogen management. The challenges and perspectives for increasing crop productivity under these stresses are highlighted and enriched with experimental evidence, to support breeding programs in light of climate-smart agriculture …
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Response of tall fescue to saline water as influenced by leaching fractions and irrigation uniformity distributions
… interactions were observed for depth-weighted soil salinity, yield, ET, tissue moisture content and canopy temperatures. Results suggest that plant response can be maintained when the LF is lowered, within limits, if the CUC is kept high.
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The effect of oily waste and nutrient amendments on soil fertility and oat growth
… conducted with a sandy, marginal agricultural soil from the Brown soil zone near Richmound, Saskatchewan. The objective of the study was to determine how oily waste from heavy oil upgrader affects soil fertility, plant growth and microbial activity under controlled environmental conditions. The …
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Comparison of soil properties and Kentucky bluegrass shoots mineral composition prior to and after 10-11 years irrigation with recycled water
… of this research were to: 1) assess changes in soil chemical properties after 5 and 11 years of recycled water irrigation, 2) determine if there is any heavy metal accumulation in soil after 11 years of recycled water irrigation, 3) evaluate Kentucky bluegrass (Poa pratensis L.) (KBG) turf …
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Analysis of AtNHX1-expressing transgenic cotton under high salt conditions and in the field
Drought and salinity are two major limiting factors in crop productivity. To improve the salt tolerance in crops, one approach is to increase the solute concentration in the vacuoles of plant cells by sequestering sodium ion (Na+) into the vacuoles of plant cells. Consequently, it would reduce the …
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Improving Pearl Millet (Pennisetum glaucum (L.) R.Br.) Productivity in Salt-affected soils in Senegal: A Greenhouse and Field investigation
The primary soil limitations to crop yield in the Senegalese "Peanut Basin" include salinity, acidity, and fertility. Crop yield may be increased by use of soil amendments and salt-tolerant cultivars. Objectives of this research were to evaluate salt tolerance of various millet (Pennisetum glaucum …
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