Calibration equations for two capacitance water content probes

2012 ◽  
Vol 26 (3) ◽  
pp. 285-293 ◽  
Author(s):  
C. Paraskevas ◽  
P. Georgiou ◽  
A. Ilias ◽  
A. Panoras ◽  
C. Babajimopoulos
Keyword(s):  
Regression Analysis ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Water Depth ◽  
Time Intervals ◽  
Volumetric Soil Water Content ◽  
Site Specific ◽  
Calibration Equations ◽  
Volumetric Soil Water

Calibration equations for two capacitance water content probesThis paper presents the calibration equations of two capacitance probes for monitoring the soil water content in a lysimeter field. Capacitance probes provide readings at desired depths and time intervals. The calibration equations are derived by regression analysis between measurements of scaled frequency and volumetric soil water content. The calibration equations are compared with the manufacturer default equations to estimate the irrigation water depth. The accuracy of capacitance probes in monitoring soil water content increased by using the site-specific calibration equations rather than the manufacturer default equation.

scholarly journals Effects of volumetric soil water content and fertilizer rate on growth and baicalin accumulation in two species of Scutellaria

2018 ◽  
Vol 10 (6) ◽  
pp. 97-105 ◽  
Author(s):  
Morgan Amanda ◽  
Joseph Pearson Brian ◽  
Shad Ali Gul ◽  
Moore Kimberly ◽  
Osborne Lance
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Fertilizer Rate ◽  
Volumetric Soil Water Content ◽  
Volumetric Soil Water

scholarly journals Postharvest Performance of ‘Pacific Rose™’ Apple Grown Under Partial Rootzone Drying

HortScience ◽  
2008 ◽  
Vol 43 (3) ◽  
pp. 952-954 ◽  
Author(s):  
Jorge A. Zegbe ◽  
M. Hossein Behboudian ◽  
Brent E. Clothier ◽  
Alexander Lang
Keyword(s):  
Weight Loss ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Quality Attributes ◽  
Volumetric Soil Water Content ◽  
Lower Weight ◽  
Partial Rootzone Drying ◽  
Two Sides ◽  
Volumetric Soil Water

Quality and storability of ‘Pacific Rose™’ apple grown under partial rootzone drying (PRD) were studied over 2 years. The treatments were commercial irrigation (CI) and PRD, which were applied by watering one side of the tree row throughout the season (Expt. 1) or by alternating irrigation between two sides of the tree row when volumetric soil water content ranged between 0.18 and 0.22 m3·m−3 (Expt. 2). The PRD and CI fruit had similar quality attributes at harvest and after storage except that the former had lower weight loss during storage in Exp. 1 and a lower firmness after storage in Exp. 2. Compared with CI, PRD saved water by 0.15 mega liters per hectare in Exp. 1 and by 0.14 mega liters per hectare in Exp. 2. We recommend PRD for humid environments similar to ours.

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