Improved Evaporimeter for Measuring Potential Evaporation from Field Soils

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Abstract

A new evaporimeter, which takes account of the effect of both atmospheric conditions and soil properties on the evaporation rate, was designed for measuring the potential evaporation from field soils. The evaporimeter consists of an evaporation pan packed with soil, a reservoir for measuring the water level with a sensor connected to a recorder, and a tube connected to both the pan and reservoir. The sensor is a differential transducer connected with a float. This sensor enabled to determine the changes in the water level within the range of ±0.5 cm with a sensitivity of 0.03 mm. By comparing the evaporation from soils with that from water, it was found that the potential evaporation rate from soils was higher than that from water, and that the evaporation from the evaporimeter responded to the external conditions almost without lag time, about 2 h earlier than that from water in a class A pan. The proposed simple evaporimeter was useful, and is recommended for measuring the potential evaporation from field soils. © Taylor & Francis Group, LLC.

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APA

Osozawa, S., & Kasubuchi, T. (1987). Improved Evaporimeter for Measuring Potential Evaporation from Field Soils. Soil Science and Plant Nutrition, 33(4), 531–538. https://doi.org/10.1080/00380768.1987.10557602

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