Struktur Komunitas Makrofauna Tanah pada Lahan Pertanian Anorganik dan Organik di Kabupaten Karo

Abstract

This study was aimed to know about community structure of soil macrofauna in anorganic and organic farmland at Karo regency, was done in June 2013. The sampling point is determined using Purposive Random Sampling. Conducted using Pitfall Trap, Squares and Hand Sorting method. The number of soil macrofauna obtained includes 3 phyla, 8 classes, 17 orders, 28 families and 32 species. Location II (organic farmland) has the highest density of 404,100 Ind/m2 while location I (anorganic farmland) has the density of 265,455 Ind/m2 . Rated frequency of attendance at both locations are relatively similar between Accidental and Assesori. Soil macrofauna characteristics is Nitidula rufipes and Odontoponera denticulata. The highest diversity index value is obtained at the location II with a value of 2,743, while the location I has the value of 2,582. The highest equitability index value is obtained at the location I with a value of 0,823, while the location II has the value of 0,806. Similarity index value of soil macrofauna of both locations is very similar to the value of 79,245%. Pearson correlation test showed varying relationships between soil physical and chemical factors with soil macrofauna phyla were found.