Kepadatan dan Frekuensi Kehadiran Makrofauna Tanah Pada Areal Tanaman Jagung (Zea mays L.) di UPT. Benih Induk Tanjung Selamat Kabupaten Deli Serdang

Abstract

Technical implementation unit (UPT). Mainspring Seeds of Palawija and Horticulture Tanjung Selamat is a Research Center located in Tanjung Selamat Village, Sunggal District, Deli Serdang Regency, North Sumatra Province. The purpose of this study was to analyze the presence of species, density, relative density and frequency of presence. Determination of sampling points using purposive sampling with the Quadratic method at both locations. The results showed that there were 30 species of soil macrofauna in the maize area, 21 species were found in location I, and 22 species were found in location II. The highest density values at location I (young corn) were 3 species, namely Cydnus aterrimus (52.50 ind/m2), Pontoscolex corethrurus (48.39 ind/m2), and Oxidus gracilis (32.26 ind/m2) m2). At location II (mature maize) as many as 2 species, namely Pheretima sp. (220.32 ind/m2), and Pontoscolex corethrurus (56.60 ind/m2). The highest constant value at both locations with absolute constants (very frequent), namely Pheretima sp. and Pontoscolex corethrurus. There were 4 bioindicator species at both locations, namely (Pontoscolex corethrurus, Pheretima sp., Cydnus aterrimus, and Oxidus gracilis)