SciELO - Scientific Electronic Library Online

 
vol.36 número4Teor nutricional foliar em minicepas de Eucalyptus benthamiiNovas abordagens na avaliação do vigor de sementes de pimentão índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Acta Scientiarum. Agronomy

versão On-line ISSN 1807-8621

Resumo

SOUZA-SCHLICK, Genivaldo David de; SORATTO, Rogério Peres  e  ZANOTTO, Mauricio Dutra. Optimizing row spacing and plant population arrangement for a new short-height castor genotype in fall-winter. Acta Sci., Agron. [online]. 2014, vol.36, n.4, pp.475-481. ISSN 1807-8621.  http://dx.doi.org/10.4025/actasciagron.v36i4.17455.

Plant population and arrangement should be properly designed to maximize the seed yield of short-height genotypes of castor (Ricinus communis L.) in each cropping season. Experiments were performed in the in the fall-winter cropping season of 2008 and 2009 in Botucatu, State of São Paulo, Brazil, to evaluate the effects of row spacing (0.45, 0.60, 0.75, and 0.90 m) and plant population (25,000, 40,000, 55,000, and 70,000 plants ha-1) on agronomical traits, yield components, seed yield, and oil yield of the genotype FCA-PB. A high plant density caused a reduction in plant survival and increased the first raceme insertion height, particularly in the year with the higher rainfall. The basal stem diameter, number of racemes per plant, and seeds per raceme were reduced by increasing the plant density. However, the seed and oil yields were minimally influenced by plant population density and row spacing because the castor plant compensated for a low plant population with a high number of racemes and seeds. The maximum seed yield was achieved with an estimated 0.64 m of row spacing and 50,107 plants ha-1 (i.e., 3.2 plants m-1).

Palavras-chave : Ricinus communis; spatial plant distribution; plant density; grain yield; oil content.

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons