Plant Sap Flow, Irrigation, Growing Degree Units, and Yield Relations in Different Maturity Group Soybeans with Various Planting Times.

Autor: Ismanov, M., Henry, C., Espinoza, L., Francis, P.
Předmět:
Zdroj: B.R. Wells Rice Research Studies - Arkansas Agricultural Experiment Station, University of Arkansas System; Dec2022, Issue 689, p155-162, 8p
Abstrakt: A study was initiated to measure plant transpiration using sap flow sensors, air, and canopy temperature, leaf area index, growing degree days, and yields across different planting dates for soybean [Glycine max (L.) Merr.]. On average, soybean transpires 15.3 in. of water in the season. Water use by the growth stage reveals that yields of earlier planted maturity group (MG) 5 soybeans were higher and transpired water more than MG 3 and 4 soybeans. In addition, canopy temperatures were 2-5 °F lower than the ambient air temperature in the R4 growth stage when the hourly sap flow is 10-12 g/h and 3-5 °F higher in the R7 growth stage when the hourly sap flow is 1-2 g/h. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index