Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution
ABSTRACT Adequate mineral supplementation can be a strategy to enable the use of brackish water in the production of vegetables. This study intended to evaluate the effect of calcium nitrate concentrations on leaf gas exchanges and yield of kale (Brassica oleracea L) fertigated with salinized nutrie...
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Universidade Federal de Campina Grande
2022-10-01
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662023000200157&tlng=en |
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| author | Daisy D. da Silva Francisco de A. de Oliveira Louize Nascimento Francisco V. da S. Sá Sandy T. dos Santos Pedro D. Fernandes |
| author_facet | Daisy D. da Silva Francisco de A. de Oliveira Louize Nascimento Francisco V. da S. Sá Sandy T. dos Santos Pedro D. Fernandes |
| author_sort | Daisy D. da Silva |
| collection | DOAJ |
| description | ABSTRACT Adequate mineral supplementation can be a strategy to enable the use of brackish water in the production of vegetables. This study intended to evaluate the effect of calcium nitrate concentrations on leaf gas exchanges and yield of kale (Brassica oleracea L) fertigated with salinized nutrient solutions. The experiment was conducted in a randomized block experimental design (4 + 1), with four replicates. Four nutrient solutions prepared in brackish water (6.0 dS m-1) containing four concentrations of Ca(NO3)2 [(750, 1,125, 1,500, and 1,875 mg L-1)] and a control treatment (standard nutrient solution using low-salinity water, 0.5 dS m-1 (750 mg L-1 of Ca(NO3)2) were used in the study. The following analyses were performed: leaf gas exchanges, leaf area, and fresh matter yield. The standard nutrient solution promoted higher values for photosynthetic rate (13.06 µmol CO2 m-2 s-1), stomatal conductance (0.19 mol H2O m-2 s-1), transpiration (2.76 mmol H2O m-2 s-1), instantaneous water use efficiency (4.73 mmol CO2 mol-1 H2O), instantaneous carboxylation efficiency (0.053 mmol CO2 mol-1 CO2), leaf area (2.78 cm2 per plant), and leaf fresh matter yield (2.64 kg per plant). The Ca(NO3)2 not nullified but mitigated the deleterious effect of salt stress on leaf gas exchanges, except for kale yield (leaf fresh matter). |
| format | Article |
| id | doaj-art-05168479286c40d88cf4b6f4e2b551ff |
| institution | DOAJ |
| issn | 1807-1929 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-05168479286c40d88cf4b6f4e2b551ff2025-08-20T03:04:06ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-19292022-10-0127215716310.1590/1807-1929/agriambi.v27n2p157-163Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solutionDaisy D. da Silvahttps://orcid.org/0000-0003-4897-0017Francisco de A. de Oliveirahttps://orcid.org/0000-0002-6895-7736Louize Nascimentohttps://orcid.org/0000-0002-6083-8417Francisco V. da S. Sáhttps://orcid.org/0000-0001-6585-8161Sandy T. dos Santoshttps://orcid.org/0000-0001-6487-555XPedro D. Fernandeshttps://orcid.org/0000-0001-5070-1030ABSTRACT Adequate mineral supplementation can be a strategy to enable the use of brackish water in the production of vegetables. This study intended to evaluate the effect of calcium nitrate concentrations on leaf gas exchanges and yield of kale (Brassica oleracea L) fertigated with salinized nutrient solutions. The experiment was conducted in a randomized block experimental design (4 + 1), with four replicates. Four nutrient solutions prepared in brackish water (6.0 dS m-1) containing four concentrations of Ca(NO3)2 [(750, 1,125, 1,500, and 1,875 mg L-1)] and a control treatment (standard nutrient solution using low-salinity water, 0.5 dS m-1 (750 mg L-1 of Ca(NO3)2) were used in the study. The following analyses were performed: leaf gas exchanges, leaf area, and fresh matter yield. The standard nutrient solution promoted higher values for photosynthetic rate (13.06 µmol CO2 m-2 s-1), stomatal conductance (0.19 mol H2O m-2 s-1), transpiration (2.76 mmol H2O m-2 s-1), instantaneous water use efficiency (4.73 mmol CO2 mol-1 H2O), instantaneous carboxylation efficiency (0.053 mmol CO2 mol-1 CO2), leaf area (2.78 cm2 per plant), and leaf fresh matter yield (2.64 kg per plant). The Ca(NO3)2 not nullified but mitigated the deleterious effect of salt stress on leaf gas exchanges, except for kale yield (leaf fresh matter).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662023000200157&tlng=enBrassica oleracea L.soillesssalt stresscalcium |
| spellingShingle | Daisy D. da Silva Francisco de A. de Oliveira Louize Nascimento Francisco V. da S. Sá Sandy T. dos Santos Pedro D. Fernandes Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution Revista Brasileira de Engenharia Agrícola e Ambiental Brassica oleracea L. soilless salt stress calcium |
| title | Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution |
| title_full | Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution |
| title_fullStr | Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution |
| title_full_unstemmed | Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution |
| title_short | Leaf gas exchanges and production of kale under Ca(NO3)2 concentrations in salinized nutrient solution |
| title_sort | leaf gas exchanges and production of kale under ca no3 2 concentrations in salinized nutrient solution |
| topic | Brassica oleracea L. soilless salt stress calcium |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662023000200157&tlng=en |
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