Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss
Intensive vegetable production in soil is often associated with large N losses to the environment. To contribute to improved N management of sweet pepper, this work developed a critical nitrogen curve (CNC). It also developed N recommendations and examined N use efficiency (NUE) and potential NO3− l...
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| Format: | info:eu-repo/semantics/article |
| Language: | English |
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2024
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| Online Access: | http://hdl.handle.net/10835/14935 https://doi.org/10.1016/j.eja.2020.126046 |
| _version_ | 1789406360372248576 |
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| author | Rodríguez, Alejandra Peña-Fleitas, María Teresa Gallardo Pino, Luisa De Souza Ibarra, Stefani Romina Padilla Ruiz, Francisco Manuel Thompson, Rodney |
| author_facet | Rodríguez, Alejandra Peña-Fleitas, María Teresa Gallardo Pino, Luisa De Souza Ibarra, Stefani Romina Padilla Ruiz, Francisco Manuel Thompson, Rodney |
| author_sort | Rodríguez, Alejandra |
| collection | DSpace |
| description | Intensive vegetable production in soil is often associated with large N losses to the environment. To contribute to improved N management of sweet pepper, this work developed a critical nitrogen curve (CNC). It also developed N recommendations and examined N use efficiency (NUE) and potential NO3− leaching loss in relation to increasing total available nitrogen (TAN). TAN is the sum of the soil mineral N at planting, N mineralized from soil organic material, and mineral N fertilizer. Three sweet pepper crops were grown in soil with autumn-winter cropping cycles in greenhouse conditions. Five different N concentrations in the nutrient solution were applied throughout the crop cycle: very N deficient (N1), N deficient (N2), conventional N management (N3), excessive N (N4) and very excessive N (N5). A critical N curve of
was determined for sweet pepper. Relative yield of the three crops had a strong linear-plateau relationship (R2 = 0.66) with integrated nitrogen nutrition index (NNIi). Maximum yield was associated with an NNIi of 0.86. In the three crops, total yield, dry matter production (DMP) and crop N uptake were generally strongly related to increasing TAN. An optimal TAN value (minimum TAN for maximum yield) of 425 kg N ha−1 was determined using a linear-plateau regression model. N uptake efficiency (NuptE) decreased exponentially with increasing TAN, from almost 0.90 kg kg−1 in the N1 treatment to 0.30 kg kg−1 in the N5 treatment. The sum of residual mineral N and leached NO3−–N was considered to be potential NO3− leaching loss. Potential NO3− leaching loss increased exponentially, with increasing TAN, to 686–1034 kg N ha−1 in the highest N treatments. For the optimal TAN value, NuptE was 0.63 kg kg−1 and the potential NO3− leaching was 125 kg N ha−1. The CNC and derived NNI values provide valuable information for N management of pepper. Consideration of TAN as the crop N supply enables maximum yield with less fertilizer N and less risk of N loss. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-14935 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2024 |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-149352024-01-08T09:17:45Z Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss Rodríguez, Alejandra Peña-Fleitas, María Teresa Gallardo Pino, Luisa De Souza Ibarra, Stefani Romina Padilla Ruiz, Francisco Manuel Thompson, Rodney Capsicum annuum crop N status nitrate leaching nitrogen nutrition index NUE optimal N42 management production yield Intensive vegetable production in soil is often associated with large N losses to the environment. To contribute to improved N management of sweet pepper, this work developed a critical nitrogen curve (CNC). It also developed N recommendations and examined N use efficiency (NUE) and potential NO3− leaching loss in relation to increasing total available nitrogen (TAN). TAN is the sum of the soil mineral N at planting, N mineralized from soil organic material, and mineral N fertilizer. Three sweet pepper crops were grown in soil with autumn-winter cropping cycles in greenhouse conditions. Five different N concentrations in the nutrient solution were applied throughout the crop cycle: very N deficient (N1), N deficient (N2), conventional N management (N3), excessive N (N4) and very excessive N (N5). A critical N curve of was determined for sweet pepper. Relative yield of the three crops had a strong linear-plateau relationship (R2 = 0.66) with integrated nitrogen nutrition index (NNIi). Maximum yield was associated with an NNIi of 0.86. In the three crops, total yield, dry matter production (DMP) and crop N uptake were generally strongly related to increasing TAN. An optimal TAN value (minimum TAN for maximum yield) of 425 kg N ha−1 was determined using a linear-plateau regression model. N uptake efficiency (NuptE) decreased exponentially with increasing TAN, from almost 0.90 kg kg−1 in the N1 treatment to 0.30 kg kg−1 in the N5 treatment. The sum of residual mineral N and leached NO3−–N was considered to be potential NO3− leaching loss. Potential NO3− leaching loss increased exponentially, with increasing TAN, to 686–1034 kg N ha−1 in the highest N treatments. For the optimal TAN value, NuptE was 0.63 kg kg−1 and the potential NO3− leaching was 125 kg N ha−1. The CNC and derived NNI values provide valuable information for N management of pepper. Consideration of TAN as the crop N supply enables maximum yield with less fertilizer N and less risk of N loss. 2024-01-08T09:17:45Z 2024-01-08T09:17:45Z 2020-07 info:eu-repo/semantics/article Rodríguez, A., Peña-Fleitas, M.T., Gallardo, M., de Souza, R., Padilla, F.M., Thompson, R.B. 2020. Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss. European Journal of Agronomy 117: 126046. http://hdl.handle.net/10835/14935 https://doi.org/10.1016/j.eja.2020.126046 en https://www.sciencedirect.com/science/article/pii/S1161030120300538?via%3Dihub Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess European Journal of Agronomy 117: 126046. |
| spellingShingle | Capsicum annuum crop N status nitrate leaching nitrogen nutrition index NUE optimal N42 management production yield Rodríguez, Alejandra Peña-Fleitas, María Teresa Gallardo Pino, Luisa De Souza Ibarra, Stefani Romina Padilla Ruiz, Francisco Manuel Thompson, Rodney Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title | Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title_full | Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title_fullStr | Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title_full_unstemmed | Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title_short | Sweet pepper and nitrogen supply in greenhouse production: Critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| title_sort | sweet pepper and nitrogen supply in greenhouse production: critical nitrogen curve, agronomic responses and risk of nitrogen loss |
| topic | Capsicum annuum crop N status nitrate leaching nitrogen nutrition index NUE optimal N42 management production yield |
| url | http://hdl.handle.net/10835/14935 https://doi.org/10.1016/j.eja.2020.126046 |
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