Test of Land Potential Sensor Tools Based on Biomass on Measurements of Temperature, Moisture, and Soil pH and Their Relationship to the Biomass Values in Marginal Land

Abstract

This research aims to test the accuracy of biomass-based land potential sensor devices. The indicators tested were the results of measurements of growing environmental conditions including temperature, humidity and soil pH, as well as measurements of tree biomass. The analysis technique is carried out in 2 stages, namely the comparative measurement test stage and the biomass calculation application test in the field. The research results show that the average measurement of pH = 5.7493, humidity = 88.0616% and temperature = 27.016ºC is generally not significantly different at the 95% t-confidence interval from the average of the measurement results from the 3 comparison sensor devices. In the pH measurement test, the 3 comparison devices had the lowest MSE value and the lowest standard deviation was in the pH-1 device of 0.03346, the humidity test in the RH-1 device was 0.03 and the temperature in the Temp-1 device was 0.0142. This shows that the sensor device built has quite accurate and valid measurement values with a fairly low error rate. The results of the application of sensor devices to measure tree biomass values obtained an average value of 163.878 kg/ha with a standard deviation of ± 68.878 and provided a significant difference at the 0.001 level for the 11 villages measured, as well as the relationship between biomass values and the growing environment is not linear.