Penetapan Dosis Pupuk Kalium dan Pupuk Kandang Ayam terhadap Produksi Tanaman Jagung (Zea mays L.) di Kecamatan Munte Kabupaten Karo

Abstract

This study aims to obtain the right dose of potassium fertilizer and chicken manure and the interaction between the two for the growth and production of corn (Zea mays L.) plants in Munte District, Karo Regency. This research was conducted in Singgamanik Village, Munte District, Karo Regency at an altitude of + 1,046 meters above sea level. Analysis of soil, chicken manure, and plants was carried out at the Laboratory of the Agricultural Instrument Standardization Agency (BSIP), Medan from December 2024 to April 2025. This study used a Randomized Block Design with 2 treatment factors and 2 blocks. The first factor is K fertilizer consisting of 5 treatment levels, namely 0% (0 kg K2O), 50% (30 kg K2O), 100% (60 kg K2O), 150% (90 kg K2O), 200% (120 kg K2O) recommended dose of K fertilizer. The second factor is chicken manure consisting of 4 treatment levels, namely 0 tons/ha, 1.5 tons/ha, 3 tons/ha, 4.5 tons/ha. The research parameters included root dry weight, shoot dry weight, K nutrient absorption, weight of husked cobs, weight of husked cobs and seed weight. The results showed that the provision of potassium fertilizer at various levels could not improved all research parameters. The provision of chicken manure at various levels improved affected the weight of husked cobs, weight of husked cobs and seed weight. The combination of K fertilizer and chicken manure treatments improved affected the weight of husked cobs, weight of husked cobs and seed weight with the best treatment at the level of 0 kg K2O and 4.5 tons/ha of chicken manure.