| Registro completo |
| Provedor de dados: |
Acta Agron. (Palmira)
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| País: |
Colombia
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| Título: |
Foliar application of molybdenum enhanced quality and yield of crispleaf lettuce (Lactuca sativa L., cv. Grand Rapids)
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| Autores: |
Steiner,Fábio
Zoz,Tiago
Zuffo,Alan Mario
Pereira-Machado,Patrícia
Zoz,Jardel
Zoz,André
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| Data: |
2018-03-01
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| Ano: |
2018
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| Palavras-chave: |
Molybdoenzymes
Nitrate assimilation
Plant nutrition
Nitrate accumulation
Vegetable quality
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| Resumo: |
Abstract Foliar molybdenum (Mo) application may enhance the nitrogen (N) acquisition by the plants and increase the yield and quality of vegetables. A study was conducted to investigate the effect of foliar Mo spray on N nutrition and yield of crispleaf lettuce (Lactuca sativa L., cv. Grand Rapids) grown in the spring-summer period. The experiment was carried out at Ourinhos, São Paulo State, Brazil, from October 2013 to January 2014. Treatments consisted of five Mo rates [0 (control), 25, 50, 75, and 100 g ha-1 of Mo] divided into two foliar sprays, at 14 and 21 days after planting. Foliar application of Mo rates reduced the nitrate (NO3 -) concentration, and increased the concentrations of ammonium (NH4+), total N and Mo in the lettuce leaves. These data indicate that the foliar Mo application improved N assimilation of lettuce plants, resulting in less accumulation of NO3 - in the leaves and therefore, improving the quality of the vegetable. Number of leaves per plant was not affected by the foliar Mo application. The 55 to 62 g ha-1 of Mo application resulted in increased of the leaves fresh weight (33%), leaves dry weight (28%) and commercial yield (34%) of crisphead lettuce, respectively. Results suggest that Mo deficiency can compromise the N metabolism of plants, and result in lower commercial yield of crispleaf lettuce.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100073
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| Editor: |
Universidad Nacional de Colombia
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| Relação: |
10.15446/acag.v67n1.59272
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| Formato: |
text/html
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| Fonte: |
Acta Agronómica v.67 n.1 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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