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

dc.creatorPicanço, M.
dc.creatorLeite, G. L. D.
dc.creatorGuedes, R. N. C.
dc.creatorSilva, E. A.
dc.date2019-02-28T12:16:46Z
dc.date2019-02-28T12:16:46Z
dc.date1998-07
dc.date.accessioned2023-09-27T21:24:25Z
dc.date.available2023-09-27T21:24:25Z
dc.identifier0261-2194
dc.identifierhttps://doi.org/10.1016/S0261-2194(98)00040-4
dc.identifierhttp://www.locus.ufv.br/handle/123456789/23735
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8960086
dc.descriptionCrop 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.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherCrop Protection
dc.relationVolume 17, Issue 5, Pages 447-452, July 1998
dc.rightsElsevier B. V.
dc.subjectCrop life table
dc.subjectCrop management
dc.subjectMineral oil
dc.subjectAlternaria solani
dc.subjectTuta absoluta
dc.subjectHelico verpa zea
dc.subjectNeoleucinodes elegantalis
dc.titleYield loss in trellised tomato affected by insecticidal sprays and plant spacing
dc.typeArtigo


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