2014
DOI: 10.1590/0001-37652014117212
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Abstract: Estimate efficiently of the whitefly population (Bemisia tuberculata Bondar) in cassava, to assist in decision making of pest control is one of the advantages of sequential sampling plans. Therefore, the objective of this study was to determine a sequential sampling plan according to two methods of pest management, using biological and/or chemical control. Samples were obtained in a commercial field of 2.500,00 m 2 , divided into 100 plots. The visualization method was used for sampling of the upper leaves by … Show more

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Cited by 5 publications
(5 citation statements)
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“…It was found most often on the northwestern slopes of the Andes at an altitude of~1500 feet. Phylogenetically, B. tuberculata resolved as a sister clade to B. tabaci, and was consistent with the results of previous studies that were based on morphological and phylogenetic differences (Bellotti and Arias 2001, Calvert et al 2001, Gill and Brown 2010, Silva et al 2014. The results are also in line with the proposed placement of B. tuberculata as a cryptic sister species to B. tabaci and several other difficult-to-distinguish Bemisia species within the proposed Bemisia sibling species complex (Gill and Brown 2010).…”
Section: Mitotype Distribution and Plant Species Associated With B Tsupporting
confidence: 90%
“…It was found most often on the northwestern slopes of the Andes at an altitude of~1500 feet. Phylogenetically, B. tuberculata resolved as a sister clade to B. tabaci, and was consistent with the results of previous studies that were based on morphological and phylogenetic differences (Bellotti and Arias 2001, Calvert et al 2001, Gill and Brown 2010, Silva et al 2014. The results are also in line with the proposed placement of B. tuberculata as a cryptic sister species to B. tabaci and several other difficult-to-distinguish Bemisia species within the proposed Bemisia sibling species complex (Gill and Brown 2010).…”
Section: Mitotype Distribution and Plant Species Associated With B Tsupporting
confidence: 90%
“…The method of model simulations used in our study indeed helped to estimate accuracy achieved by the currently used firstevent sampling in cabbage. Bias, standard deviation, operating characteristic of no-decision probabilities, as well as numbers of required samples all appeared useful parameters as been proposed by Binns and Nyrop (1992);Bins et al (2000); Arnaldo and Torres (2005); or Silva et al (2014). They may also be used for evaluating other plans of first-event sampling or even presence-absence sampling, for example for other agricultural pests as well as other crops or regions.…”
Section: Discussionmentioning
confidence: 99%
“…Statisticians have proposed several ways to reduce sample sizes such as through double sampling plans (Binns and Nyrop, 1992), sequential sampling (Kuno, 1969;Binns and Nyrop, 1992;Arnaldo and Torres, 2005;Greco and Wright, 2013;Silva et al, [page 34] [Journal of Entomological and Acarological Research 2021; 53:9448] 2014; Pérez et al, 2015), variable intensity sampling (Hoy, 1991), binomial presence-absence sampling (Binns and Nyrop, 1992;Hamilton et al, 2006), binomial sequential sampling (Smith and Shepard, 2004;Butler and Trumble, 2012), or first-event sampling plans (Berchtold and Freuler, 1988). The accuracy as well as the time effort of either fixed sample-size plans (Hamilton et al, 2006) or sequential sampling plans (Binns and Nyrop, 1992;Arnaldo and Torres, 2005;Silva et al, 2014;Pérez et al, 2015) can be simulated through testing varying sample numbers, infestation levels, or thresholds (Binns and Nyrop, 1992;Arnaldo and Torres, 2005;Silva et al, 2014;Pérez et al, 2015) and subsequently evaluating the operating characteristic of the simulated models (Binns and Nyrop, 1992;Arnaldo and Torres, 2005;Hamilton et al, 2006;Silva AS et al, 2014) .…”
Section: Introductionmentioning
confidence: 99%
“…The municipalities with highest production are Fresno (36%), Mariquita (28.1%), Falan (8.0%), Alvarado (7.9%) and Palocabildo (2.6%) (MADR, 2012). Since 2009, a decrease in the average yield associated with abiotic and biotic factors was observed Sampling estimates the relative abundance of insect species population in a crop (Silva et al, 2014). For insects exploring leaves for food, sampling techniques include: a) beating of leaves on a white background tray and direct counting of insects; b) visual estimate of the number of nymphs in a predetermined standard area, in cm 2 ; and c) collecting leaves in a plastic tray to count injury or damage associated to herbivory (Gusmão, 2004;Bueno et al, 2005;Pinto-Zevallos and Vanninen, 2013;Barbedo, 2014).…”
Section: Introductionmentioning
confidence: 99%