Effects of Pyroligneous Acid to Growth and Yield of Soybeans (Glycine max)

Abstract

In the Philippines, there is at present a Soybean Roadmap which has two major components, namely: Organic Soybean Production and Organic Soybean Utilization, Processing and Marketing. This research project compliments the Philippine National Soybean Program by developing appropriate organic technologies especially on its external inputs like fertilizer. The main objective of this research was to find out the effects of pyroligneous acid on the growth and yield of soybeans. Philippine Seed Board Soya 6 (PSB SY6) or commonly called Tiwala 8 is an approved variety for use in the country which was planted in field condition of the university research area in 2 x 2 meter plots. This was four (4) times replicated by using randomized complete block design (RCBD). Coconut shell vinegar (pyroligneous acid) was used in this study. There were three levels of pyroligneous acid being tested: 10%, 20%, and 30% which represented Treatment 1, Treatment 2 and Treatment 3, respectively. Treatment 4 served as the control. Statistical analysis revealed that all treatments had not affected to the growth of the soybean plants. However, it was noted that there was a significant effect of wood vinegar on the yield.