Soil-Based Vegetation Technique to Quantify Effects of Rhizospheric Soil Osmotic and Matric Water Potentials on Crop Salt Tolerance

Schleiff, U. (2012) Soil-Based Vegetation Technique to Quantify Effects of Rhizospheric Soil Osmotic and Matric Water Potentials on Crop Salt Tolerance. Journal of Agronomy and Crop Science. 12 p..

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Abstract

In saline soils, plant water supply is the most critical growth factor. To better understand water supply and growth of soil-grown crops, research should focus on root water uptake in saline soils. Plant water supply and growth is complex. One has to consider, simultaneously, soil and plant parameters: (i) the soil physical parameters texture; pF curve; osmotic, matric and total water potential; salinity at the soil/root interface; and bulk soil salinity; and (ii) the plant parameters root mass and rooting density; root morphology; transpiration; and shoot growth. Technical devices for direct and simultaneous measurement of all parameters are not yet available. This study presents a vegetation technique (VeTe) that permits to determinate required data from continuous measurement of pot water losses and by indirect calculation. The VeTe was tested using young rape (Brassica napus, cv. Lingot) as the model plant, growing in a silty soil. Rape was selected for its efficient root system to explore soil determined growth factors. Basically, the VeTe requires two vegetation phases: a pre-cultivation phase, and an experimental phase....

Item Type: Article
Additional Information: I want to thank my friend Jim Hattab, Houston, for revision of English language and the reviewers for their helpful comments.
Uncontrolled Keywords: brackish irrigation; plant salt tolerance; rhizosphere; root morphology; root water uptake; soil salinity; vegetation technique
Author Affiliation: Independent Expert for Irrigation & Salinity – Fertilizers & Crops – Soils & Environment Wolfenbuettel, Germany
Subjects: Soil Science and Microbiology > Soil Sciences
Divisions: General
Depositing User: Mr Siva Shankar
Date Deposited: 16 Jul 2012 07:51
Last Modified: 16 Jul 2012 07:51
URI: http://eprints.icrisat.ac.in/id/eprint/6789

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