Data/hora: 01/06/2024 00:31:40

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 03/04/1997
Data da última atualização: | 24/01/2020
Autoria: | FERNANDEZ, G. C. J.; MILLER, Jr. J. C.
Título: | Yield component analysis in five cowpea cultivars.
Ano de publicação: | 1985
Fonte/Imprenta: | Journal of the American Society for Horticultural Science, v. 110, n. 4, p. 553-559, 1985.
Idioma: | Inglês
Conteúdo: | A field study was conducted to determine the effects of rhizobial inoculation (cowpea 'EL' mixed strain) and N-fertilization with 100 kg/ha nitrate nitrogen (CaNO3 - 15,5% N) on seed and biomass yield in cowpea (Vigna unguiculata (L.) Walp.). Four indeterminate cultivars, 'Mississippi Silver', 'California Blackeye #5', 'Lady', 'Brown Crowder', and  one determinate, early maturing cultivar, 'Bush Purple Hull', were used. Seed yield in inoculated and N-fertilized plants was significantly greater than that of the unfertilized, uninoculated control treatment. Generally, yield of inoculated plants was equivalent to or greater than that obtained with 100 kg N. The indeterminate cultivars yielded more biomass than did 'Bush Purple Hull' in all 3 treatments. Seed yield was higher in the indeterminate cultivars yielded more biomass than did 'Bush Purple Hull' in all 3 treatments. Seed yield was higher in the indeterminate cultivars with inoculation or N-fertilization than in 'Bush Purple Hull'; however, there were no significant differences in seed yield among cultivars in the control treatment. Harvest index in the indeterminate cultivars was increased by inoculation but not by N-fertilization. Harvest index of 'Bush Purple Hull' was at least 3 times higher than the indeterminate cultivars. Among the major seed yield components, only pods/plant was influenced by all 3 treatments, whereas seeds/pod and seed weight were fairly stable and cultivar specific.
Palavras-Chave: | Caupi; Divergencia genetica; Genetic divergence; Rhizobial inoculation.
Thesagro: | Fixação de Nitrogênio; Vigna Unguiculata.
Thesaurus Nal: | nitrogen fixation; seed yield.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (2818-1) - ADC - SP - PP - S 11022 -  - S 11022 - DIS