Impacts of Pyroligneous Acid to Biological and Chemical Properties of Depleted Soil in Bohol, Philippines

• TRAVERO JOSE T.

  Bohol Island State University, Bilar Campus

• MIHARA MACHITO

  Faculty of Regional Environment Science, Tokyo University of Agriculture

Abstract

This paper presents a part of a bigger research project to validate the use of Coconut Shell Pyroligneous Acid (CSPA) in agriculture and to find out its efficacy in rehabilitating a depleted soil in Bohol, Philippines. Specifically, this study will find out the impacts of CSPA on the biological and chemical properties of depleted soil. Pyroligneous acid used in this study is a by-product of coconut shell charcoal making. The CSPA was used in combination with rain water. There were three concentrations used: 10%, 20% and 30%. Soil samples from depleted site in an upland farm were brought to the laboratory for analysis. Soil acidity changes in all treatments in an indirect proportion and organic matter has increased by 1 in soils receiving 10% and 30% CSPA and 0.5 in soils receiving 20% CSPA. From a baseline data of an “extremely acid soil”, soils receiving 10% and 20% CSPA lowers to “strongly acid” category while those receiving 30% changed to “very strongly acid”. Soils applied with 10% and 20% CSPA did not change the phosphorous value but it decreased by 3 in those applied with 30% CSPA. All treatments did not make any changes in potassium deficiency. For its biological study, it was found out that soil fauna in all treatments has a moderate Simpson’s index value. There were seven groups of arthropods found: order Acarina of class Arachnida and orders Coleoptera, Collembola, Dermaptera, Diptera, Hemiptera, and Hymenoptera of class Insecta. It was found out that treatments that received high percentage of pyroligneous acid got a high faunal population. The study concluded that pyroligneous acid has demonstrated impacts to the biologicl and chemical aspects to a depleted soil. The higher the rate of CSPA, the higher the population of arthropods. Pyroligneous acid has changed the chemical property in terms of soil pH value, Organic Matter value and phosphorous value. Potassium remains deficient before and after treatment in all levels.

Journal

• International Journal of Environmental and Rural Development

  International Journal of Environmental and Rural Development 6 (1), 132-137, 2015

  Institute of Environmental Rehabilitation and Conservation, Research Center

Keywords

• pyroligneous acid
• depleted soil
• arthropods
• soil fauna
• coconut shell

Details

• CRID: 1390002184892438656
• NII Article ID: 130007828781
• DOI: 10.32115/ijerd.6.1_132
• ISSN: 24333700
• ISSN: 2185159X
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed