Comparison in Types and Numbers of Macro Fauna of Vegetable Fields from Organics, GAP and Chemical Crop Production in Nakhon Pathom Province

Abstract

The purpose of this research was to study the differences in the types and numbers of macro fauna populations in the Organic, GAP and Chemical crop production system (2 fields/ system). This study was conducted in vegetable fields in Nong Ngu Lueam sub-district, Mueang Nakhon Pathom district, Nakhon Pathom province. The Quadrat size 1x1 meter random sampling of 5 points per field was used for classification and the determination of the diversity index. The result found that Organics, GAP and Chemical crop production had the index of species diversity of macro fauna at 1.705-1.730, 1.424-1.507 and 1.261-1.346, respectively. The most common macro fauna were fire ant (Solenopsis geminate) and black ant (Paratrechina longicornisI) which are found mostly in organic plant production systems. It was also found that there was the insects act as predators and parasitoids to ants, spiders, earwig, centipede and small nonpoisonous centipede-like reptile in organic more than GAP and chemical crop production system. Due to a crop production with a chemical is toxic to insects repellent thus affect the type and number of benthic organisms, both directly and indirectly.