Optimasi Dosis Pupuk N, P dan K berdasarkan Analisis Tanah melalui Fertigasi pada Tanaman Okra

Abstract

SARMIYATI TAHER. Optimasi Dosis Pupuk N, P dan K berdasarkan Analisis Tanah melalui Fertigasi pada Tanaman Okra. Dibimbing oleh ANAS DINURROHMAN SUSILA dan KETTY SUKETI.

Okra merupakan tanaman sayuran yang berpotensi dibudidayakan, namun produksi di Indonesia masih rendah. Pemupukan melalui fertigasi dengan sistem irigasi tetes berdasarkan hasil analisis tanah diharapkan dapat meningkatkan produktivitas okra hijau. Penelitian ini bertujuan memperoleh dosis pupuk N, P dan K berdasarkan rekomendasi program FERADS dan memvalidasi dosis tersebut melalui fertigasi pada tanaman okra. Penelitian dilakukan di Kebun Percobaan Cikarawang, Institut Pertanian Bogor, dengan jenis tanah andosol, kandungan P-tersedia 2,02 ppm, K-tersedia 25,76 ppm, C-organik 1,61%, pH KCl 5,04 dan pH H2O 5,75. Program FERADS menunjukkan rekomendasi dosis pupuk untuk lahan penelitian okra, yaitu 292 kg ha-1 Urea, 467 kg ha-1 SP36, 269 kg ha-1 KCl, 3 ton ha-1 dolomit, 30,7 ton ha-1 pupuk kandang sapi, 6 ml per bedeng pupuk hayati cair dan 30 g per bedeng biofungisida. Hasil penelitian menunjukkan bahwa perlakuan dosis pupuk belum mencapai dosis optimum untuk budidaya okra hijau varietas Lucky Five dengan perkiraan produktivitas total yang dihasilkan antar perlakuan berkisar 10,30-11,74 ton ha-1.

Kata kunci: amelioran, dosis optimum, FERADS, Lucky Five, produktivitas

SARMIYATI TAHER. Optimization of N, P and K Fertilizer Doses Based on Soil Analysis through Fertigation in Okra Plants. Supervised by ANAS DINURROHMAN SUSILA and KETTY SUKETI.

Okra is a vegetable crop that has the potential to be cultivated, but production in Indonesia is still low. Fertilization through fertigation with a drip irrigation system based on the results of soil analysis is expected to increase green okra productivity. This research aims to obtain N, P and K fertilizer doses based on the recommendations of the FERADS program and validate these doses through fertigation on okra plants. The research was conducted at the Cikarawang Experimental Garden, Bogor Agricultural Institute, with andosol soil type, P-available content of 2.02 ppm, K-available 25.76 ppm, C-organic 1.61%, pH KCl 5.04 and pH H2O 5.75. The FERADS program shows recommended fertilizer doses for okra research fields, namely 292 kg ha-1 Urea, 467 kg ha-1 SP36, 269 kg ha-1 KCl, 3 tons ha-1 dolomite, 30.7 tons ha-1 cow manure, 6 ml per bed liquid biofertilizer and 30 g bed biofungicide. The research results showed that the fertilizer dose treatment had not reached the optimum dose for cultivating the Lucky Five variety of green okra with an estimated total productivity between treatments ranging from 10.30-11.74 tons ha-1.

Keywords: ameliorant, FERADS, Lucky Five, optimum dose, productivity