Yield loss in trellised tomato affected by insecticidal sprays and plant spacing

Show simple item record Picanço, M. Leite, G. L. D. Guedes, R. N. C. Silva, E. A. 2019-02-28T12:16:46Z 2019-02-28T12:16:46Z 1998-07
dc.identifier.issn 0261-2194
dc.description.abstract Crop life analysis was used to investigate the effect of two management methods: within-row plant spacing and insecticidal sprays on yield losses and pest damage on staked tomato plants. The mean tomato fruit yield was 21.4 t.ha−1 but the cumulative fruit loss was 76.9%. The correlation coefficients indicate that the cumulative losses were more influenced by the fluctuation of fruit losses (r = 0.61) (P < 0.05) than by other production factors. Fruit losses were mainly due to infestation by the lepidopteran pests Helicoverpa zea (r = 0.68) (P < 0.05), Neoleucinodes elegantalis (r = 0.63) (P < 0.05), and Tuta absoluta (r = 0.57) (P < 0.05), and the pathogen Alternaria solani (r = 0.60) (P < 0.05). Untreated tomatoes yielded less fruit, mainly due to a greater infestation of T. absoluta, with the highest yield on tomatoes treated with the insecticide cartap. The insecticide abamectin mixed with mineral oil provided the best control of N. elegantalis, while abamectin and cartap sprays provided efficient control of H. zea and N. elegantalis in plants at the closer plant spacing (1 × 0.33 cm) regardless of mineral oil use. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Crop Protection pt-BR
dc.relation.ispartofseries Volume 17, Issue 5, Pages 447-452, July 1998 pt-BR
dc.rights Elsevier B. V. pt-BR
dc.subject Crop life table pt-BR
dc.subject Crop management pt-BR
dc.subject Mineral oil pt-BR
dc.subject Alternaria solani pt-BR
dc.subject Tuta absoluta pt-BR
dc.subject Helico verpa zea pt-BR
dc.subject Neoleucinodes elegantalis pt-BR
dc.title Yield loss in trellised tomato affected by insecticidal sprays and plant spacing en
dc.type Artigo pt-BR

Files in this item

This item appears in the following Collection(s)

  • Artigos [579]
    Artigos Técnico-científicos na área de Biologia Animal

Show simple item record

Search DSpace


My Account