Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique
Potato farming is relevant for global carbon balances and greenhouse emissions, of which gross primary productivity (GPP) is one of the main drivers. In this study, the net carbon ecosystem exchange (NEE) was measured using the Eddy Covariance (EC) method in two potato crops, one of them with an...
| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | Español |
| Publicado: |
MDPI
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12324/41221 https://doi.org/10.3390/w13223223 |
| Sumario: | Potato farming is relevant for global carbon balances and greenhouse emissions, of which
gross primary productivity (GPP) is one of the main drivers. In this study, the net carbon ecosystem
exchange (NEE) was measured using the Eddy Covariance (EC) method in two potato crops, one
of them with an irrigation system, the other under rainfed conditions. Accurate NEE partition into
GPP and ecosystem respiration (RECO) was carried out by fitting a light response curve. Direct
measurements of dry weight and leaf area were performed from sowing to the end of canopy life
cycle and tuber bulking. Agricultural drought in the rainfed crop resulted in limited GPP rate, low
leaf area index (LAI), and low canopy carbon assimilation response to the photosynthetically active
radiation (PAR). Hence, in this crop, there was lower efficiency in tuber biomass gain and NEE
sum indicated net carbon emissions to atmosphere (NEE = 154.7 g C m�����2 30.21). In contrast, the
irrigated crop showed higher GPP rate and acted as a carbon sink (NEE = �����366.6 g C m�����2 50.30).
Our results show, the environmental and productive benefits of potato crops grown under optimal
water supply. |
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