Silicon and boron mitigate the effects of water deficit on sunflower
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...
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Universidade Federal de Campina Grande
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doaj-904a2b69be71410c905ca32a99e0d7762020-11-25T02:57:44ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental - Agriambi1807-192923317518210.1590/1807-1929/agriambi.v23n3p175-182S1415-43662019000300175Silicon and boron mitigate the effects of water deficit on sunflowerJose M. G. NevesLeonardo A. de AquinoPaulo G. BergerJúlio C. L. NevesGenelício C. RochaEdimilson A. BarbosaABSTRACT 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300175&lng=en&tlng=enHelianthus annuusfluorescência da clorofilatrocas gasosaspotencial hídrico foliar |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jose M. G. Neves Leonardo A. de Aquino Paulo G. Berger Júlio C. L. Neves Genelício C. Rocha Edimilson A. Barbosa |
spellingShingle |
Jose M. G. Neves Leonardo A. de Aquino Paulo G. Berger Júlio C. L. Neves Genelício C. Rocha Edimilson A. Barbosa Silicon and boron mitigate the effects of water deficit on sunflower Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Helianthus annuus fluorescência da clorofila trocas gasosas potencial hídrico foliar |
author_facet |
Jose M. G. Neves Leonardo A. de Aquino Paulo G. Berger Júlio C. L. Neves Genelício C. Rocha Edimilson A. Barbosa |
author_sort |
Jose M. G. Neves |
title |
Silicon and boron mitigate the effects of water deficit on sunflower |
title_short |
Silicon and boron mitigate the effects of water deficit on sunflower |
title_full |
Silicon and boron mitigate the effects of water deficit on sunflower |
title_fullStr |
Silicon and boron mitigate the effects of water deficit on sunflower |
title_full_unstemmed |
Silicon and boron mitigate the effects of water deficit on sunflower |
title_sort |
silicon and boron mitigate the effects of water deficit on sunflower |
publisher |
Universidade Federal de Campina Grande |
series |
Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi |
issn |
1807-1929 |
description |
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. |
topic |
Helianthus annuus fluorescência da clorofila trocas gasosas potencial hídrico foliar |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300175&lng=en&tlng=en |
work_keys_str_mv |
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