Indonesian

Abstract

Hadi M, Soesilohadi RCH, Wagiman FX, Suhardjono YT. 2015. Diversity of soil arthropods in organic and inorganic paddy rice field ecosystem. Pros Sem Nas Masy Biodiv Indon 1: 1577-1581. The use of chemical pesticides in paddy ecosystems have caused damage to paddy ecosystem and making it unstable. Risks posed by chemical pesticide residues not only can kill pests, but also can kill other non-target organisms including natural enemy groups. Inorganic paddy systems continue to use chemicals as a means of production, the negative impact such as pests become resistant, pollution and danger residue. People who are aware of the negative impact of the use of synthetic chemicals and then switch to apply the organic farming system by minimizing the use of chemicals as a means of production. Public awareness of the environment and health grows, the better because it appears the idea of another alternative technology known as organic farming, which is based on the principles of biological ecology. The study aims to compare the diversity of soil arthropods in paddy ecosystem organic and inorganic paddy. Research conducted Bakalrejo Village, Subdistrict Susukan, Semarang District, Central Java. Retrieving data using methods trap pitting (pit-fall traps). In each ecosystem installed 15 traps in 3 lines rice field. Traps placed throughout the evening began at 17:30 pm until 06:00 am. Identification carried out in the Laboratory of Ecology and Biosystematics, Department of Biology, FSM, Diponegoro University, Semarang. The results showed that soil arthropods members caught in organic rice field ecosystem numbered 8-14 families, whereas in the rice field ecosystem inorganic family numbered 5-11. Arthropod abundance members in organic farmland totaling 297 individuals while in the field of inorganic totaling 236 individuals. Diversity index (Shannon-Wiener) Arthropods in organic rice field ecosystem ranged between 1.02-1.64, whereas in the rice field ecosystem inorganic ranged between 0.95-1.39. There is a tendency for soil arthropods in organic rice field ecosystem more diverse than inorganic rice fields, however, actually not much different between the two, as indicated by the level of equality both more than 50%, ranging from 56-78%. Arthropods members of the families were found to have a role as a predator (10 families), herbivores (8 families) and pollinators (1 family).