Vol. 7, Issue 4 (2019)
Study on soil moisture variations in responding to Tensiometer and soil moisture meter with respect to gravimetric method
Author(s): Tanmoy Majhi and Nabanita Sarkar
Abstract: The field experiment was conducted at the Instructional Farm of Faculty of Agricultural Engineering, BCKV, Mohanpur, Nadia, West Bengal during the year of 2017-18. In this study the volumetric soil moisture contents were calculated by using tensiometer, soil moisture meter and gravimetric method. The variations of volumetric soil moisture contents obtained from tensiometer and soil moisture meter were examined with respect to gravimetric method which was considered as reference method. It was estimated that the coefficient of variation (CV) and standard deviation (STD) were 0.237, 6.78 and 0.247, 6.59 respectively for tensiometer and soil moisture meter. The volumetric soil moisture by tensiometer and soil moisture meter were estimated from the equations of the curves, y = 0.0091x2 + 0.7791x + 7.0596 and y = - 0.024x2 + 2.3447x - 9.9318 which were generated by plotting volumetric soil moisture content under tensiometer and soil moisture meter against volumetric soil moisture by gravimetric method (observed data). By using these developed equations the soil moisture data for tensiometer and soil moisture meter were estimated. The average of the observed soil moisture values by gravimetric method and estimated soil moisture under tensiometer and soil moisture meter were 29.48, 37.99 and 37.93 respectively. The difference of values was 8.51% and 5.45% higher in comparison to gravimetric method. Finally after statistical test the highest and lowest percentage deviation values calculated were 10.85, 8.02 and 12.86, 0.71 respectively for tensiometer and soil moisture meter.
Pages: 3179-3188 | 281 Views 128 Downloads
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How to cite this article:
Tanmoy Majhi, Nabanita Sarkar. Study on soil moisture variations in responding to Tensiometer and soil moisture meter with respect to gravimetric method. Int J Chem Stud 2019;7(4):3179-3188.
