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BATANGAS – An environment and human friendly system of agricultural farm pest repellent using ultrasonic waves has been found to show positive result for rice farmers in Nasugbu town.

The farm pest repellent that can help in deterring pests from infesting the crops was installed at the rice fields in Barangay Putat, Nasugbu town by a group of graduating electronics engineering as part of their thesis.

The students-researchers are Kristine Castillo, Shekinah Faith Castillo, David Aaron Dinglasan, Ren Delton Gerner, Katelyn Ramos, and Ma. Laissa Therese Serrano studying Bachelor of Science in Electronics Communication Engineering (BSECE).

The title of the research study is “Design and Implementation of a Solar-Powered Electronic Farm Pest Repellent with Remote Control.”

The young researchers believe that their study is the first of its kind in the country of using ultrasonic waves to repel pests rather than chemicals.

It includes how ultrasonic frequency deter pests using ultrasonic sensors together with PIR (passive infrared) sensors that were used to detect movements of every pest that surrounds the crops.

It only covers the design and implementation of a solar-powered electronic farm pest repellent, not other agricultural materials or machines that could be used to control pest infestations.

“As the electronic pest repellents are introduced to repel and deter unwanted animals such as insects, rodents, and birds, it emits a high-pitched sound that a human ear cannot detect because of its audio frequency range of more than 20,000 hertz,” the study said.

Compared to chemical repellents, the electronic repellents are power efficient that can operate on a minimal voltage equivalent to five volts which makes the device cost-efficient and compact in design.

This also includes a power indicator that makes the apparatus easy to identify whether it is working or not, according to the study.

In addition, with regards to safety, this method causes no harm and toxicity. It does not produce smoke, gases, or radiation, the research pointed out, the research assured.

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