Data/hora: 23/05/2024 13:56:14

Biblioteca(s): | Embrapa Agroindústria Tropical.
Data corrente: | 18/08/1993
Data da última atualização: | 18/08/1993
Autoria: | CULLINEY, T. W.; PIMENTEL, D.
Título: | Ecological effects of organic agricultural practices on insect populations.
Ano de publicação: | 1986
Fonte/Imprenta: | Agriculture, Ecosystems and Environment, v.15, p.253-266, 1986.
Idioma: | Inglês
Conteúdo: | Late-season population densities of flea beetles, alate aphids, and caterpillars were found to be significantly lower on collards which were fertilized with sewage sludge and cow manure than on chemically fertilized and unfertilized plants. Plant growth differed significantly among treatments: studge > manure > fertilizer > untreated. The ecological effects of the different treatments on herbivore populations suggested that insect abundance was probably due to changes in the nutritional quality chemistry of the plants raised in the various treatments. Also, plant size probably influenced microclimate and predator effectiveness in treatments. Whatever the cause(s) for the significantly fewer insects in the organic treatments,the results support the propositionthat organic fertilizers can promote cro-plant resistance to attack by insect pests.
Palavras-Chave: | Inseto - populacao.
Thesagro: | Agricultura Orgânica; Ecologia.
Categoria do assunto: | --
Registro original: | Embrapa Agroindústria Tropical (CNPAT)
Exemplares: | CNPAT - (712-1) - EMB - SP - -- - SP 00978 -  - 92.00978 - DIS