Data/hora: 12/06/2024 12:41:30

Provedor de dados: | 91
País: | Brazil
Título: | Efficiency of portable chlorophyll meters in assessing the nutritional status of wheat plants
Autores: | Schlichting,Alessana F.; Bonfim-Silva,Edna M.; Silva,Matheus de C.; Pietro-Souza,William; Silva,Tonny J. A. da; Farias,Lorraine do N.
Data: | 2015-12-01
Ano: | 2015
Palavras-chave: | SPAD; Falker; Triticum aestivum.
Resumo: | ABSTRACT The objective of this study was to verify the efficiency of two portable chlorophyll meters (Minolta SPAD® 502 and Falker ClorofiLOG® 1030) in assessing the nutritional status of wheat plants, correlating the indices from the devices and the direct determination of chlorophyll content with the concentration of nitrogen (N) in the plant. The experiment was conducted in a greenhouse, in pots with 5 dm3 of Oxisol, in a completely randomized design, with six N doses (0, 80, 160, 240, 320 and 400 mg dm-3) and five replicates. At 47 days after emergence, the readings of SPAD and Falker indices and the quantification of chlorophyll content and N concentration in wheat plants were performed, as well as analysis of variance and correlation test, both at 0.05 probability level. The chlorophyll meters Minolta SPAD® 502 and Falker ClorofiLOG® 1030 do not differ with respect to the indirect determination of chlorophyll in wheat plants. The Falker chlorophyll index was statistically equal to the chlorophyll content. Indirect chlorophyll indices and chlorophyll content showed a high correlation with the N concentration in the plant.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201148
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v19n12p1148-1151
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.19 n.12 2015
Fonte: | info:eu-repo/semantics/openAccess