Data/hora: 12/06/2024 15:56:02

Provedor de dados: | 91
País: | Brazil
Título: | Silicon and boron mitigate the effects of water deficit on sunflower
Autores: | Neves,Jose M. G.; Aquino,Leonardo A. de; Berger,Paulo G.; Neves,Júlio C. L.; Rocha,Genelício C.; Barbosa,Edimilson A.
Data: | 2019-03-01
Ano: | 2019
Palavras-chave: | Helianthus annuus; Chlorophyll fluorescence; Gas exchange; Leaf water potential.
Resumo: | ABSTRACT The objective of this study was to evaluate the effect of Ca and Mg silicate and B on the gas exchange, leaf water potential and chlorophyll fluorescence parameters in the sunflower variety Embrapa 122 -V2000 under water stress conditions. The trial was conducted in Red Yellow Latosol with very clayey texture, with contrasting levels of Si and B and subjected to water deficit. The experimental design was randomized blocks in a 24 factorial arrangement, with five replicates. Treatments consisted of the combination of two acidity corrective agents (calcium magnesium silicate and dolomitic limestone), two levels of base saturation (30 and 70%), two levels of B (0.18 mg dm-3 - value available in the soil and 1.20 mg dm-3) and two water regimes (with and without water stress from the beginning of flowering). It can be concluded that the supply of Si and B can reduce the damage to sunflower caused by water stress.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300175
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v23n3p175-182
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.23 n.3 2019
Fonte: | info:eu-repo/semantics/openAccess