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Article

Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique

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Corporación Colombiana de Investigación Agropecuaria—Agrosavia, Centro de Investigación Tibaitatá, Km 14 Vía Mosquera, Bogotá 250047, Cundinamarca, Colombia
2
“Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba 13418-900, SP, Brazil
*
Authors to whom correspondence should be addressed.
Academic Editor: Songhao Shang
Water 2021, 13(22), 3223; https://doi.org/10.3390/w13223223
Received: 13 October 2021 / Revised: 4 November 2021 / Accepted: 5 November 2021 / Published: 13 November 2021
(This article belongs to the Section Water, Agriculture and Aquaculture)
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. View Full-Text
Keywords: potato crop; water management; water deficit; net ecosystem carbon exchange; ecosystem respiration potato crop; water management; water deficit; net ecosystem carbon exchange; ecosystem respiration
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MDPI and ACS Style

Martínez-Maldonado, F.E.; Castaño-Marín, A.M.; Góez-Vinasco, G.A.; Marin, F.R. Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique. Water 2021, 13, 3223. https://doi.org/10.3390/w13223223

AMA Style

Martínez-Maldonado FE, Castaño-Marín AM, Góez-Vinasco GA, Marin FR. Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique. Water. 2021; 13(22):3223. https://doi.org/10.3390/w13223223

Chicago/Turabian Style

Martínez-Maldonado, Fabio E., Angela M. Castaño-Marín, Gerardo A. Góez-Vinasco, and Fabio R. Marin. 2021. "Gross Primary Production of Rainfed and Irrigated Potato (Solanum tuberosum L.) in the Colombian Andean Region Using Eddy Covariance Technique" Water 13, no. 22: 3223. https://doi.org/10.3390/w13223223

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