Effect of automatic plant acoustic frequency technology (PAFT) on mustard pakcoy (Brassica rapa var. parachinensis) plant using temperature and humidity parameters

Plant Acoustic Frequency Technology (PAFT) is a tool with the method of using acoustic waves to stimulate the opening of stomata, the purpose is to intensify the absorption of nutrients needed by plants through the leaves. The purpose of this research is to design and make PAFT for plant growth stimulus by utilizing the principle of photosynthesis process in plants, so as to improve the quality and increase the crop yield. The research method used is the design and manufacture of tools and experimental studies by conducting a descriptive research approach. The results of PAFT test using mustard pakcoy was able to increase the average of plant height by 10,4%, increase the leaf area by 30,9%, increase the stomatal opening by 28,4%, increase the total chlorophyll content higher by 27,7%, increased the absorption of nitrogen (N) content by 25,36% and increased the absorption of potassium (K) by 34,42% from the control treatment, and able to increase the yield of greater harvest weight than the control treatment, that is fresh weight of 25,6% and dry weight 58,7%.