EFEKTIVITAS PUPUK ORGANIK DAN PUPUK HAYATI CAIR TERHADAP PEMULIHAN TANAH TERDEGRADASI DI DESA SUCOPANGEPOK

Abstract

ABSTRAK. Keberlanjutan produksi padi bergantung pada pemberian input yang digunakan, khususnya pupuk. Selain pupuk sudah menjadi kebutuhan, aplikasi pupuk yang tidak tepat dapat mengakibatkan degradasi tanah. Salah satu cara yang dapat dilakukan untuk mengembalikan kesuburan pada tanah terdegradasi yaitu pemberian nutrisi tambahan berupa pupuk. Pupuk yang dapat digunakan yaitu pupuk organik dari kombinasi biochar, kotoran ayam, limbah ikan dan pupuk hayati cair sebagai bionematisida dan biopestisida. Pupuk organik dan pupuk hayati ini diharapkan dapat mencukupi unsur hara pada lahan yang telah terdegradasi. Penilitian ini bertujuan untuk menilai efektivitas pupuk organik dan pupuk hayati cair terhadap pemulihan tanah terdegradasi. Penelitian ini dilaksanakan di Laboratorium Kesuburan Tanah Fakultas Pertanian Universitas Jember dan pada lahan sawah di Desa Sucopangepok. Penelitian ini menggunakan rancangan acak kelompok dengan 2 faktor dan 5 ulangan. Hasil menunjukkan bahwa perlakuan dengan pemberian pupuk hayati cair dan dosis pupuk organik 10 ton/ha efektif mampu menaikkan nilai N tanah sebesar 47,87%, menaikkan nilai P tanah tiga kali lebih besar, dan menaikkan nilai KTK tanah sebesar 2,6% dari perlakuan kontrol. Perlakuan dengan pemberian pupuk hayati cair dan dosis pupuk organik 5 ton/ha efektif mampu menaikkan nilai K tanah sebesar 40,22% dan menaikkan nilai C-Organik sebesar 75,44% dari perlakuan kontrol. Perlakuan tanpa pemberian pupuk hayati cair dan dosis pupuk organik 10 ton/ha efektif mampu menaikkan nilai pH sebesar 2,82% dari perlakuan kontrol.

ABSTRACT. Sustainability of rice production depends on the provision of inputs used, especially fertilizers. In addition to fertilizers that have become a necessity, improper application of fertilizers can lead to soil degradation. One way that can be done to restore fertility in degraded soils is the provision of additional nutrients in the form of fertilizers. Fertilizers that can be used are organic fertilizers from a combination of biochar, chicken manure, fish waste and liquid biofertilizers as bionematicides and biopesticides. Organic fertilizers and biological fertilizers are expected to meet the nutrients in degraded land. This study aims to assess the effectiveness of organic fertilizers and liquid biofertilizers on the recovery of degraded soils. This research was conducted at the Laboratory of Soil Fertility, Faculty of Agriculture, University of Jember and on rice fields in Sucopangepok Village. This study used a randomized block design with 2 factors and 5 replications. The results showed that the treatment with liquid biofertilizer and organic fertilizer dose of 10 tons/ha was effective in increasing the N value of the soil by 47.87%, increasing the P value of the soil three times, and increasing the CEC value of the soil by 2.6% from the treatment. control. Treatment with liquid biofertilizer and organic fertilizer dose of 5 tons/ha was effective in increasing the K value of the soil by 40.22% and increasing the C-Organic value by 75.44% from the control treatment. The treatment without the application of liquid biofertilizer and a dose of 10 tons/ha of organic fertilizer was effectively able to increase the pH value by 2.82% from the control treatment.