Using the sensitivity of biomass production to soil water for physiological drought evaluation
The analysis of drought as a phenomenon and the proposal of how to define and quantify the deficiency of water in soil for plants, so called physiological drought, are described. The presented approach is based on the theoretical considerations supported by empirically estimated relationships betwee...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2008-12-01
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| Series: | Soil and Water Research |
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| Online Access: | https://swr.agriculturejournals.cz/artkey/swr-200810-0002_using-the-sensitivity-of-biomass-production-to-soil-water-for-physiological-drought-evaluation.php |
| _version_ | 1828007085962428416 |
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| author | Viliam Novák |
| author_facet | Viliam Novák |
| author_sort | Viliam Novák |
| collection | DOAJ |
| description | The analysis of drought as a phenomenon and the proposal of how to define and quantify the deficiency of water in soil for plants, so called physiological drought, are described. The presented approach is based on the theoretical considerations supported by empirically estimated relationships between the biomass production of a particular plant and the transpiration total of this plant during its vegetation period. This relationship is linear and is valid for particular plant and environmental conditions (nutrition, agrotechnics). Optimal plant production can be reached for maximum seasonal transpiration total, therefore the potential transpiration total corresponds to the maximum possible yield. The transpiration rate lower than the potential one leads to a biomass production decrease. This phenomenon can be used to define the physiological drought, under which the soil water content in the root zone decreases below the so called critical soil water content of limited availability for plants, under which the transpiration rate drops below its potential transpiration rate. Methodology is illustrated on the basis of the results of mathematical modelling of soil water movement in Soil - Plant - Atmosphere system, with loamy soil and maize canopy. |
| first_indexed | 2024-04-10T08:05:23Z |
| format | Article |
| id | doaj.art-926f9cca5e7e45bfad4023ff53a6bf9d |
| institution | Directory Open Access Journal |
| issn | 1801-5395 1805-9384 |
| language | English |
| last_indexed | 2024-04-10T08:05:23Z |
| publishDate | 2008-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Soil and Water Research |
| spelling | doaj.art-926f9cca5e7e45bfad4023ff53a6bf9d2023-02-23T03:48:09ZengCzech Academy of Agricultural SciencesSoil and Water Research1801-53951805-93842008-12-013Special Issue 1S116S12210.17221/1411-SWRswr-200810-0002Using the sensitivity of biomass production to soil water for physiological drought evaluationViliam Novák0Institute of Hydrology, Slovak Academy of Sciences, Bratislava, SlovakiaThe analysis of drought as a phenomenon and the proposal of how to define and quantify the deficiency of water in soil for plants, so called physiological drought, are described. The presented approach is based on the theoretical considerations supported by empirically estimated relationships between the biomass production of a particular plant and the transpiration total of this plant during its vegetation period. This relationship is linear and is valid for particular plant and environmental conditions (nutrition, agrotechnics). Optimal plant production can be reached for maximum seasonal transpiration total, therefore the potential transpiration total corresponds to the maximum possible yield. The transpiration rate lower than the potential one leads to a biomass production decrease. This phenomenon can be used to define the physiological drought, under which the soil water content in the root zone decreases below the so called critical soil water content of limited availability for plants, under which the transpiration rate drops below its potential transpiration rate. Methodology is illustrated on the basis of the results of mathematical modelling of soil water movement in Soil - Plant - Atmosphere system, with loamy soil and maize canopy.https://swr.agriculturejournals.cz/artkey/swr-200810-0002_using-the-sensitivity-of-biomass-production-to-soil-water-for-physiological-drought-evaluation.phpphysiological droughtsoil water contenttranspirationbiomass productionmathematical modellingmaize |
| spellingShingle | Viliam Novák Using the sensitivity of biomass production to soil water for physiological drought evaluation Soil and Water Research physiological drought soil water content transpiration biomass production mathematical modelling maize |
| title | Using the sensitivity of biomass production to soil water for physiological drought evaluation |
| title_full | Using the sensitivity of biomass production to soil water for physiological drought evaluation |
| title_fullStr | Using the sensitivity of biomass production to soil water for physiological drought evaluation |
| title_full_unstemmed | Using the sensitivity of biomass production to soil water for physiological drought evaluation |
| title_short | Using the sensitivity of biomass production to soil water for physiological drought evaluation |
| title_sort | using the sensitivity of biomass production to soil water for physiological drought evaluation |
| topic | physiological drought soil water content transpiration biomass production mathematical modelling maize |
| url | https://swr.agriculturejournals.cz/artkey/swr-200810-0002_using-the-sensitivity-of-biomass-production-to-soil-water-for-physiological-drought-evaluation.php |
| work_keys_str_mv | AT viliamnovak usingthesensitivityofbiomassproductiontosoilwaterforphysiologicaldroughtevaluation |