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INFLUENCE OF INSECTICIDAL AERIAL SPRAYING ON SPATIAL DISTRIBUTION PATTERN OF ALABAMA ARGILLACEA (HÜBNER, 1818) AND SPODOPTERA FRUGIPERDA (J.E. SMITH, 1797) ON COTTON CROP

ABSTRACT

The objective of the research was to determine the effect of the aerial insecticides spraying on the pattern of clumping distribution of the caterpillars Alabama argillacea (Hübner, 1818) and Spodoptera frugiperda (J.E. Smith, 1797) on the cotton crop. The cultivar used was CNPA-ITA 90, with aerial application in four different fields in the area of Ponta Porã’s area, MS, Brazil. The aerial application of insecticides did not alter significantly the pattern of aggregated distribution of the caterpillars of both species significantly, affecting more the population density of little and large larvae, but the population density of the medium larvae was low affected.

KEY WORDS:
Insecta; probability distribution; aerial spraying; insecticides; sampling.

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
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