01595naa a2200217 a 450000100080000000500110000800800410001910000230006024501260008326000090020952008980021865000110111665300300112765300360115770000210119370000220121470000210123670000230125770000150128077300820129511070692002-04-30       1989    bl uuuu     u00u1 u    #d1 aPIZZAMIGLIO, M. A.  aPhenological Patterns ans Sampling Decision Rules For Arthropods in Cotton Fields in Paraná, BrazilbBefore Boll Weevil.  c1989  aSeveral species of arthropods commonly found in untreated cotton in Paraná, Brazil, were sampled using the aceurate whole plant bag sampling method (WPBS). The data provide important background information for cotton prior to the expected increase ín insecticide use for the control of the newly introduced cotton bofl weevil (Anthonomus grandis Boh.) ín Paraná, Brazíl, Decision sampling rules base on Taylor's powcr law were developed for inany of the conimon species. ne relationship between the proportion of infested plants and the average density of arthropods per plant for cotton aphid and the cotton stem borer were, assessed for the cotton aphid. (Aphis gossypii Glover, 1876) and the stem borer (Eufinobothrus brasiliensis (Hambleton, 1937)). These functions may be used in the fleld to estímate the mean density of these pests in the field from presence-absence observations.  acotton  apresence-absence sampling  awhole plant bag sampling method1 aGUTIERREZ, A. P.1 aSANTOS, W. J. dos1 aGALLAGHER, K. D.1 aOLIVEIRA, W. S. de1 aFUJITA, Z.  tPesquisa Agropecuária Brasileira, Brasíliagv.24, n.3, p. 337-345, mar.1989