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Sequential sampling of Euschistus heros (Heteroptera: Pentatomidae) in soybean Scientia Agricola
Souza,Leandro Aparecido de; Barbosa,José Carlos; Grigolli,José Fernando Jurca; Fraga,Diego Felisbino; Moraes,Lílian Cristina; Busoli,Antonio Carlos.
Integrated pest management programs for soybean (Glycine max (L.) Merrill) must be based on efficient sampling plans for estimating the pest population. Based on the spatial distribution of the Neotropical brown stink bug Euschistus heros (Fabricius, 1794) found on soybean, it was possible to construct a sequential sampling plan for the survey of this insect found on soybean. The experiment was carried out during two growing seasons, 2010/2011 and 2011/2012, using the transgenic soybean cultivar M 7908 RR, in plots of 10,000 m² subdivided into 100 plots of 100 m² (10 m × 10 m). Nymphs > 0.5 cm (4th and 5th instars) plus adults were counted weekly from five drop cloth technique samplings per plot. To evaluate insect dispersion in the area, the following...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical brown stink bug; Sampling method.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000600004
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Within plant distribution of Anthonomus grandis (Coleoptera: Curculionidae) feeding and oviposition damages in cotton cultivars Ciência e Agrotecnologia
Grigolli,José Fernando Jurca; Souza,Leandro Aparecido de; Fraga,Diego Felisbino; Funichello,Marina; Busoli,Antonio Carlos.
The feeding and oviposition behavior of boll weevil in new cotton cultivars is essential for an adequate management. The objective of this study was to evaluate the vertical distribution of squares punctured for feeding and oviposition of the pest in the cultivars NuOPAL, DeltaOPAL, FMT-701, FMX-910 and FMX-993, and record the most and least preferred times of feeding and oviposition. The number of squares used for boll weevil feeding and oviposition were evaluated weekly in three parts of plant canopy. It was observed that, regardless the cultivar, A. grandis preferred to lay eggs in squares located in the upper part and feed on squares in the middle and upper parts. The boll weevil preferred to feed on cultivar FMT-701 in the beginning of the period of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Boll weevil; Gossypium hirsutum; Feeding preference; Oviposition preference; Behavior.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100009
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