Pengaruh Penambahan Pupuk dengan Kandungan Magnesium dan Senyawa Asam Humat Terhadap Komponen Hasil Jagung Manis

Abstract

Peningkatan penggunaan pupuk merupakan hal yang sangat perlu diperhatikan, mengingat salah satu hambatan produksi suatu tanaman adalah kekurangan unsur hara dalam tanah. Pemupukan yang tepat dapat menghasilkan produksi jagung manis yang optimal. Penelitian ini bertujuan mempelajari pengaruh penambahan pupuk dengan kandungan magnesium dan senyawa asam humat terhadap komponen hasil jagung manis. Percobaan dilakukan pada bulan Maret 2024 hinga bulan Juni 2024 di kebun Percobaan Pusat Penelitian Kelapa Sawit Unit Bogor. Penelitian ini menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal dengan 7 perlakuan dan empat kali ulangan. Perlakuan berupa kontrol (tanpa pemupukan), pupuk standar, dan pupuk gabungan antara (magnesium dan asam humat) dan pupuk anorganik. Penambahan pupuk dengan kandungan magnesium dan senyawa asam humat berpengaruh tehadap karakter agronomi dan karakter hasil jagung manis pada pengamatan tinggi tanaman, jumlah daun, diameter batang, panjang tongkol, panjang tongkol berbiji, bobot tongkol berkelobot, dan nilai Brix. Perlakuan tertinggi dihasilkan oleh perlakuan kombinasi pupuk (magnesium + asam humat) 100% + pupuk anorganik 100% dan perlakuan (magnesium + asam humat) 150% + pupuk anorganik 100% pada hasil produktivitas (8,70 ton ha-1 dan 8,76 ton ha-1) dan nilai Relative Agronomic Effectiveness (RAE) (126% dan 128%).

Increasing the use of fertilizers needs attention, considering that one of the obstacles to producing a plant is a lack of nutrients in the soil. Proper fertilization can produce optimal sweet corn production. This research aims to study the effect of adding fertilizers made from active magnesium and humic acid compounds on sweet corn yield components. The experiment was conducted from March 2024 to June 2024 at the Experiment Station of the Bogor Oil Palm Research Center. This study used a single factor completely randomized complete group design (RKLT) with 7 treatments and four replications. Treatments were control (no fertilization), standard fertilizer, combined fertilizer (magnesium and humic acid), and inorganic fertilizer. The addition of fertilizers made from magnesium and humic acid compounds had an effect on agronomic characters and sweet corn yield characters in the observation of plant height, number of leaves, stem diameter, cob length, cob length, cob weight, and Brix value. The highest treatment was produced by the fertilizer combination treatment (magnesium + humic acid) 100% + inorganic fertilizer 100% and treatment (magnesium + humic acid) 150% + inorganic fertilizer 100% on productivity results (8.70 tons ha-1 and 8.76 tons ha-1) and Relative Agronomic Effectiveness (RAE) values (126% and 128%).