Application of Modern Technology for Tree Growth Monitoring in Plantations

Abstract

Modern technology aims to track tree growth uses Internet of Things (IoT) with growth monitoring tool to create a real-time monitoring system. This study aims to reduce manpower and human error during forest inventory. The prototype system works by monitoring movement of a slider resistor sensor as the tree grows and such growth data is then automatically sent to the user without the need of people to collect information at the stand. The diameter at breast height (DBH) was measured among the automated dendrometer prototype with other popular tools such as diameter tape, diameter steel tape, Vernier Caliper and manual band dendrometers. It is found that tree growth data collected by all equipments are not significantly different (F = 0.012, p-value = 1.000), thus tree growth data obtained from the prototype tool is valid and comparable to other tools. Besides, the lead time for data collection, it is found that manual band dendrometers spent least time for data collection. However,This time depends on the skills of  the user handing the device. The investment for developing a single prototype is approx. 15,782 baht. When the entire rotation period of 30 years is considered, the operational cost of manual method is 5,250 where the prototype is 126,223.60 baht. Although operational cost of prototype is pretty much higher than ordinary tools, but the prototype may reduce human error and provide real-time monitoring capability which is useful for plantation management in the long run. Further studies should focus on cost reduction and investment feasibility as the cost of electronic devices decreases.