Biodiversitas Journal of Biological Diversity
Vol. 19 No. 6 (2018)

The mixed cropping of Anthocephalus cadamba and Glycine max for rehabilitating sloping lands

KARYATI KARYATI (Faculty of Forestry, Universitas Mulawarman. Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda 75123, East Kalimantan, Indonesia)
SRI SARMINAH (Faculty of Forestry, Universitas Mulawarman. Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda 75123, East Kalimantan, Indonesia)
KARMINI KARMINI (Faculty of Agriculture, Universitas Mulawarman. Jl. Pasir Balengkong, Gunung Kelua, Samarinda 75123, East Kalimantan, Indonesia.)
GUNAWAN SIMANGUNSONG (Faculty of Forestry, Universitas Mulawarman. Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda 75123, East Kalimantan, Indonesia)
JEKSON TAMBA (Faculty of Forestry, Universitas Mulawarman. Jl. Ki Hajar Dewantara, Gunung Kelua, Samarinda 75123, East Kalimantan, Indonesia)



Article Info

Publish Date
09 Oct 2018

Abstract

Karyati, Sarminah S, Karmini, Simangunsong G, Tamba J. 2018. The mixed cropping of Anthocephalus cadamba and Glycine max for rehabilitating sloping lands. Biodiversitas 19: 2088-2095. Agroforestry system is one of the many alternatives to overcome problems concerning sloping lands. The objectives of this current study were to analyze the effect of agroforestry system in the form of mixed cropping of jabon tree (Anthocephalus cadamba Mig) and soybean (Glycine max Merr) on growth and hydro-orological aspects on sloping lands with different steepness (a slightly steep and a steep slope gradient). The growth parameters (survival rate, ground coverage, diameter increment, and height increment) and hydro-orological parameters (surface runoff, potential erosion, erosion hazard index, and erosion hazard level) were observed in this study. The findings showed that on the slightly steep slope (>15-25%) land, the survival rate of A. cadamba was 90%, the ground coverage of the G. max was 70-79%, the diameter and the height increments of A. cadamba trees were 1.8 cm year-1 and 13.8 cm year-1 respectively. Meanwhile, the potential erosion rate and the erosion hazard index were 32.13 ton ha-1 year-1 and 1.29, respectively. In the steeper slope (>25-45%), the survival rate of A. cadamba reached 90%, the G. max ground cover reached 60-69%, the diameter and height increments of the A. cadamba reached 1.5 cm year-1 and 12.0 cm year-1 respectively. Furthermore, in the steep slope, the potential erosion rate was 52.51 ton ha-1 year-1 and the erosion hazard index was 2.10. In addition, the potential erosion rate and the erosion hazard index in the control plot were higher than those in slightly steep slope. Therefore, it could be implied that the application of A. cadamba and G. max mixed cropping system could rehabilitate sloping lands.

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Journal Info

Abbrev

biodiv

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Description

The Biodiversitas Journal was first published in 2000 by the Department of Biology, FMNS, Universitas Sebelas Maret, Surakarta, Indonesia, then in 2006 it was co-published by the Society for Indonesian Biodiversity and that department; since 2017 it was also hosted by Smujo. From 2003-2012 it was ...