Uji Metode Pengukuran Aldd Ekstraktan KCl dan LaCl3 dalam Menetapkan Kebutuhan Kapur di Tanah Ultisol
Measurement Test of Exchangable Al Methods with KCl and LaCl3 Extractant in Determining Lime Requirements in Ultisol
DOI:
https://doi.org/10.32734/ja.v4i3.2084Keywords:
Aldd, KCl, LaCl3, kapur, ultisolAbstract
Penelitian yang menguji dua metode pengukuran Aldd, yaitu dengan ekstraktan KCl dan LaCl3 untuk menetapkan kebutuhan kapur di tanah Ultisol. Hasil pengukuran diterapkan pada tanah di rumah kasa menggunakan Rancangan Acak Kelompok (RAK) non faktorial, 7 perlakuan dosis kapur CaCO3 yaitu 0.0 xAldd; 1.0xAldd-KCl; 1.5xAldd-KCl; 2.0xAldd-KCl; 1.0xAldd-LaCl3; 1.5xAldd-LaCl3; 2.0xAldd-LaCl3 dengan 4 ulangan. Kapur diinkubasi selama 14 hari dalam keadaan kapasitas lapang. Tanaman indikator kedelai ditanam hingga fase pertumbuhan vegetatif. Parameter yang diamati adalah pH H2O, pH KCl, tinggi tanaman, volume akar, berat kering tajuk, berat kering akar, dan serapan N, P, K tanaman. Hasil penelitian menunjukkan bahwa peningkatan dosis kapur hanya meningkatkan pH H2O dan pH KCl tanah. Kebutuhan kapur tanah Ultisol lebih tepat ditentukan menggunakan Aldd ekstrak KCl 1 N.
This research compared two of exchangable Al methods extraction using KCl and LaCl3 to determine lime treatment in Ultisol. The result applied in green house using non factorial blocky randomized design, 7 dosages CaCO3 0; 1xAlexc-KCl; 1.5xAlexc-KCl; 2xAlexc-KCl; 1xAlexc-LaCl3; 1.5xAlexc-LaCl3; 2xAlexc-LaCl3 with 4 replication. Lime incubated for 14 days in field capacity. Soybean as indicator planted until vegetative growth phase. Parameter measured were soil pH H2O and pH KCl after lime incubation, plant height, root volume, shoot dry weight, root dry weight and N, P, K absorption of the plant. The result of research showed that liming to Ultisol just increase soil pH H2O and pH KCl. Lime requirement of Ultisol determined using Alexc KCl 1 N extract.
Downloads
Downloads
Published
Issue
Section
License
The Authors submitting a manuscript do so on the understanding that if accepted for publication, copyright of the article shall be assigned to Jurnal Online Agroekoteknologi as well as TALENTA Publisher Universitas Sumatera Utara as the publisher of the journal.
Copyright encompasses exclusive rights to reproduce and deliver the article in all forms and media. The reproduction of any part of this journal, its storage in databases and its transmission by any form or media, will be allowed only with written permission from Jurnal Online Agroekoteknologi.
The Copyright Transfer Form can be downloaded here.
The copyright form should be signed originally and sent to the Editorial Office in the form of original mail or scanned document.