| Autor: |
Ismanov, M., Henry, C. G., Espinoza, L., Francis, P. B. |
| Předmět: |
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| Zdroj: |
B.R. Wells Rice Research Studies - Arkansas Agricultural Experiment Station, University of Arkansas System; Dec2021, Issue 680, p185-189, 5p |
| Abstrakt: |
Plant water demands vary by soybean varieties and by climate and are specific to each region. Sap flow is a direct measure of plant transpiration, the primary component of evapotranspiration. Understanding the relationship between crop yield, plant biomass, soil moisture, amount of nutrients, and plant sap flow is critical to developing irrigation practices that result in higher water use efficiency in soybean (Glycine max. L. Merr.), especially during drought or lack of irrigation water. Sap flow was measured for maturity groups 3, 4, and 5 soybean varieties adapted to the mid-south. Measurements were taken during all reproductive growth stages using a Flow 32 K-1 system. Multiple linear regression sap flow sap equations were developed for R4-R8 growth stages using the solar radiation, air temperature, air relative humidity, dew point, and soil moisture. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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