PENENTUAN NILAI FAKTOR TANAMAN JAGUNG DAN UBI KAYU DENGAN METODE USLE DAN PETAK KECIL PADA TANAH ULTISOL DI KECAMATAN SIBORONGBORONG KABUPATEN TAPANULI UTARA
ABSTRACT: Crop factor (C) is a
factor that is easier to modify in an effort to reduce erosion. This study was
aim to determine the value of crop factor
of corn and
cassava during July
to October 2012
using USLE prediction
and methods of
small plots. In addition, this study was also aim to
quantify the allowable erosion rate (T)
and Erosion Hazard Level (TBE). Parameters measured were effective soil depth,
soil permeability, levels of C-organic soil, soil texture, soil structure, and
rainfall. The results showed that the value of the cassava crop factor using
rainfall research data for 4 months and 12 years data were 0.68 and 0.69
respectively, and the value of the corn crop factor using rainfall research
data for 4 months and 12 years data were 0.58 and 0.59 respectively. The amount
of allowable erosion rate is 17.17 ton (ha.year)-1. While Erosion Hazard Rate
(TBE) corn and cassava land were 0.020 and 0.024 respectively, which included
in the low category.
Key words: Erosion, Ultisol,
Crop Factor, Siborongborong
Penulis: Yenci Wulandari Manik,
Sumono, Nazif Ichwan dan Edi Susanto
Kode Jurnal: jppertaniandd130147
