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Efficiency of absorption, translocation, and use of nitrogen by water-stressed coffee

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dc.contributor.author Martinez, Herminia Emilia Prieto
dc.contributor.author Bohorquez, Cesar Augusto Avellaneda
dc.contributor.author Cecon, Paulo Roberto
dc.date.accessioned 2024-10-07T21:56:03Z
dc.date.available 2024-10-07T21:56:03Z
dc.date.issued 2024
dc.identifier.citation MARTINEZ, H. E. P.; BOHORQUEZ, C. A. A.; CECON, P. R. Efficiency of absorption, translocation, and use of nitrogen by water-stressed coffee. Acta Scientiarum. Agronomy, Maringá, v. 46, e62923, 2024. pt_BR
dc.identifier.issn 1807-8621
dc.identifier.uri https://doi.org/10.4025/actasciagron.v46i1.62923 pt_BR
dc.identifier.uri http://www.sbicafe.ufv.br/handle/123456789/14658
dc.description.abstract Climate change and the expansion of agricultural lands to low-fertility soils have prompted studies on the effects of water and nutritional stress on nutrient uptake and use. This study aimed to evaluate the efficiency of absorption, translocation, and use of N in coffee cultivars under water stress (WS) and different N doses. The experiment was performed hydroponically and arranged in a 4 × 2 × 4 factorial randomized block design with three replications. These factors consisted of four coffee varieties, two N doses, and four levels of WS. At the end of the experiment, the dry matter production, N concentration, and N accumulation of plants, as well as nutritional efficiency indices were evaluated. The data were subjected to analysis of variance and regression. The results showed that in plants previously well-supplied with N, N stress induces greater allocation of dry matter in roots, mitigating the effects of subsequent water deficits on shoot dry matter production. Young Mundo Novo plants subjected to N stress followed by increasing water stress maintained a high utilization efficiency (UE). Young Acauã plants well-supplied with N, maintained their N utilization efficiency up to -1.6 MPa of water stress; however, when they were N starved, they underwent a drastic reduction in UE at potentials below -0.22 MPa. pt_BR
dc.format pdf pt_BR
dc.language.iso en pt_BR
dc.publisher Editora da Universidade Estadual de Maringá - EDUEM pt_BR
dc.relation.ispartofseries Acta Scientiarum. Agronomy;v. 46, e62923, 2024;
dc.rights Open Access pt_BR
dc.subject Coffea arabica L. pt_BR
dc.subject N accumulation pt_BR
dc.subject Shoot/root ratio pt_BR
dc.subject.classification Cafeicultura::Solos e nutrição do cafeeiro pt_BR
dc.title Efficiency of absorption, translocation, and use of nitrogen by water-stressed coffee pt_BR
dc.type Artigo pt_BR

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