Journal of Tropical Soils
Vol 13, No 2: May 2008

Reformulation of Crop and Management Factor in ANSWERS model

Hidayat, Yayat (Unknown)
Sinukaban, Naik (Unknown)
Pawitan, Hidayat (Unknown)
Murtilaksono, Kukuh (Unknown)

Article Info

Publish Date
01 May 2008

Abstract

Crop and management factor value is significantly corelated with outputs of ANSWERS model especially on soil erosion.   Using daily crop and management factors (daily C factors), the ANSWERS model performs well in predicting soil erosion which is showed by determination coeffient (R2 = 0.89), model efficiency (0.86), and average of percentage model deviations (24.1 %).  Whereas using USLE C factor (2 cropping systems), predicted is much higher than measured soil erosion (over estimate).  Output of the model is not statisfy, it is represented by model coefficient (0.40) and average of percentage model deviations (63.6 %).

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Journal Info
Journal of Tropical Soils
Website

Abbrev

tropicalsoil

Publisher

Universitas Lampung

Subject

Agriculture, Biological Sciences & Forestry Environmental Science

Description

Journal of Tropical Soils (JTS) publishes all aspects in the original research of soil science (soil physic and soil conservation, soil mineralogy, soil chemistry and soil fertility, soil biology and soil biochemical, soil genesis and classification, land survey and land evaluation, land development ...