2007
DOI: 10.1590/s1519-566x2007000600016
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Planos de amostragem seqüenciais para Orthezia praelonga Douglas (Hemiptera: Sternorrhyncha, Ortheziidae) na cultura de citros

Abstract: -The sequential sampling is characterized by using samples of variable sizes, and has the advantage of reducing sampling time and costs if compared to fi xed-size sampling. To introduce an adequate management for orthezia, sequential sampling plans were developed for orchards under low and high infestation. Data were collected in Matão, SP, in commercial stands of the orange variety 'Pêra Rio', at fi ve, nine and 15 years of age. Twenty samplings were performed in the whole area of each stand by observing the … Show more

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“…Within the monitoring a cheaper option may be sequential sampling (Alatawi et al, 2005), which is characterized by the use of a variable number of sample units (Costa et al, 2007). Sequential sampling usually results in the observation of a smaller number of samples than would be required with conventional sampling (Fernandes et al, 2002), saving time and labor (Fernandes et al, 2003).…”
Section: Resultsmentioning
confidence: 99%
“…Within the monitoring a cheaper option may be sequential sampling (Alatawi et al, 2005), which is characterized by the use of a variable number of sample units (Costa et al, 2007). Sequential sampling usually results in the observation of a smaller number of samples than would be required with conventional sampling (Fernandes et al, 2002), saving time and labor (Fernandes et al, 2003).…”
Section: Resultsmentioning
confidence: 99%