Data/hora: 06/06/2024 02:37:11

Provedor de dados: | 91
País: | Brazil
Título: | Yield and growth characteristics of sunflower sown from August to February in Santa Maria, RS
Autores: | Heldwein,Arno B.; Loose,Luis H.; Lucas,Dionéia D. P.; Hinnah,Fernando D.; Bortoluzzi,Mateus P.; Maldaner,Ivan C.
Data: | 2014-09-01
Ano: | 2014
Palavras-chave: | Helianthus annuus L; Sowing dates; Meteorological conditions.
Resumo: | Sunflower (Helianthus annuus L.) is an oilseed crop that can be grown in different regions and sowing dates, but not all regions and sowing dates are appropriate for the crop development. The aim of this study was to determine yield and growth characteristics of sunflower on seven sowing dates, in Santa Maria, from 2007 to 2012. Five experiments were carried out in a completely randomized factorial design with four replications. The factor "A" was monthly sowing dates from the beginning of August to February and the factor "D" was two sunflower hybrids. Capitulum diameter, maximum leaf area index, maximum height of plants, weight of thousand achenes and yield were determined. In normal or La Niña years the highest yield is reached in September sowing dates, while in El Niño years, the crop growth and yield in early sowings are affected negatively, due to heavy rainfall, soil water excess and plant diseases.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000900005
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v18n09p908-913
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.18 n.9 2014
Fonte: | info:eu-repo/semantics/openAccess