Sampling procedures for spittlebug adults in pastures of Brachiaria decumbens.

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dc.contributorIICA; CNPGC; EMPAER.
dc.creatorNILAKHE, S. S.
dc.creatorSILVA, A. A. da
dc.creatorSOUZA FILHO, J. A. G. de
dc.date2019-10-28T18:05:36Z
dc.date2019-10-28T18:05:36Z
dc.date1997-02-28
dc.date1984
dc.date2019-10-28T18:05:36Z
dc.date.accessioned2026-07-07T03:41:15Z
dc.descriptionA sampling study of spittlebug adults in pastures of Brachiaria decumbens was conduced to find an appropriate number of sweep-net sweeps/sample. Considering the relative variation (SE/X) X 100, and the total number of sweeps in the sampling, 10 sweeps/sample were found to be better than 5,20 our 40. The number of samples required for a particular level of relative variation at population densities>16 spittlebug adults/10 sweeps remained the same, whereas at densities<16, the number increased inversely. A regression model to convert relative estimates obtained by sweep-net method to the absolute estimate was presented. Considering the degree of precision and the time spent in sampling, the sweep-net method was superior to cage method. The distribution pattern of numbers of spittlebug adults in samples of 10 sweep-net sweeps, generally fitted the poisson series. A sequential plan presented here would reduce the sampling time over the conventional (fixed sample numbers) sampling.
dc.descriptionTítulo em português: Procedimento de amostragem de adultos de cigarrinhas em pastagens de Brachiaria decumbens.
dc.identifierPesquisa Agropecuária Brasileira, Brasília, DF, v. 19, n. 9, p. 1065-1074, set. 1984.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/319774
dc.identifier.urihttp://hdl.handle.net/123456789/440901
dc.languageeng
dc.rightsopenAccess
dc.subjectSpittlebugs
dc.subjectPasture
dc.subjectAmostragem
dc.subjectBrachiaria Decumbens
dc.subjectCigarrinha das Pastagens
dc.subjectDeois Flavopicta
dc.subjectPastagem
dc.subjectZulia Entreriana
dc.subjectCercopidae
dc.subjectsampling
dc.titleSampling procedures for spittlebug adults in pastures of Brachiaria decumbens.
dc.typeArtigo de periódico

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