A field practice report on the measurement of soil hydrologic properties on paddy fields at the International Rice Research Institute, Laguna, Philippines

Date

12-2014

Degree

Bachelor of Science in Agricultural and Biosystems Engineering

Major Course

Major in Land & Water Resources Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Joan Cecilia M. Catubig-Casila

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The field practice at IRRI was conducted with the general objective of being able to apply engineering principles in the measurement of hydrologic properties of soil on paddy fields at the International Rice Research Institute, Laguna, Philippines. Moreover, the student aimed to measure the bulk density and saturated hydraulic conductivity of the soil. By soil sampling, the measurement of the bulk density and saturated hydraulic conductivity was done at 3 KN2 plots of IRRI experimentation station while the calibration of the sensors was performed at the laboratory using a data-logging system. Having Day 0 as the day of transplanting, bulk densities were measured at different depths in all 3 plots from before land preparation up to Day 9 of the 90-day cropping period of NSICRC 238 rice variety. The saturated hydraulic conductivities were measured at different depths from Day 0 up to Day 5 of the 90-day cropping period of the same rice variety at the same plots. It was concluded that before land preparation bulk densities were higher compared to Day 0 up to Day 9. Saturated hydraulic conductivity on the other hand decreases from Day 0 up to Day 5. Lastly, calibration of 5TE sensors used in determining the volumetric water content of the soil was performed. The calibration of sensors was performed and verified by gravimetric method. Using MS Excel, the calibration of 5TE sensors was best fitted by a polynomial equation.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2014 A2 /F86

Document Type

Thesis

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