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Fajar Syofwan
Bogor Agricultural University
Agriculture, Biological Sciences & Forestry

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Model Simulation of Soybean (Glycine Max (L.) Merrill) Growth by Energy Balance Approach Fajar Syofwan; Handoko Handoko
Agromet Vol. 32 No. 1 (2018): JUNE 2018
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1046.088 KB) | DOI: 10.29244/j.agromet.32.1.31-41

Abstract

Intercepted solar radiation by leaf will influence energy balance in plant. The energy balance in leaf is a complex process, which results in biomass growth. Here, we modeled leaf energy balance to estimate dry matter growth in soybean. In the field, we measured intercepted radiation in canopy (1 meter above surface) with two treatments: soybean with 50% shading (N50%M0) and no-shading (N0%M0) twice a week. Then we sampled a biomass with destructive technique every week in each treatment. Our results showed that the intercepted radiation in no-shading treatment was higher (400 J/m2) than those in shading one (250 J/m2). The results were consistence with the high biomass growth at 12 weeks after planting, which observed in no-shading treatment. Then we validated our model by 1:1 plot test. Our finding revealed that no-shading treatment showed a good agreement with the observed biomass (closed to 1:1 plot), whereas the shading treatment tended to predict under estimate of biomass.
Co-Authors Handoko Handoko