PERAN BEBERAPA BAHAN SILIKAT (Si) DAN PUPUK FOSFAT (P) DALAM MEMPERBAIKI SIFAT KIMIA TANAH ANDISOL DAN PERTUMBUHAN TANAMAN

Cici Chairunnisa, Hamidah Hanum, Mukhlis Mukhlis

Abstract


The objective of this research was study the role of silicate material and phosphat fertilizer in
improving soil chemical charachteristics and plant growth. Andisols material was taken from
agriculture area with horticulture commodity in Kuta Rakyat Village, Naman Teran Subdistrict,
Karo Regency. This research used factorial blocky randomized design with 3 block and 2 factors.
The silicate material were consisted of four kind are : B0 (control), B1 (Agrosil), B2 (coarse grass),
B3 (straw rice). The treatment of phosphate fertilizer consisted of four levels, namely : F0 (0 ppm P),
F1 (100 ppm P), F2 (200 ppm P), and F3 (300 ppm P). Silicate material was incubated for 45 days
and then applied P fertilizer. The plant kept until vegatative phase in green house. The result of this
research showed that the affect of material silicate of coarse grass was very good in increasing Puptake,
diameter of stem, dry weight root,dry weight crown, and height plant. And then straw rice is
very good in decrease P retention and Agrosil is very good in increase SiO2 available. The effect of
P fertilizer is not significant while the effect of interaction of silicate material and P fertilizer only
significant in hight plant.
Keywords : Andisols, silicate material, and phosphate

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)