NDLI: Spatial Distribution of Adults and Nymphs of Euschistus heros (F.) (Hemiptera: Pentatomidae) on Bt and Non-Bt Soybean

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Spatial Distribution of Adults and Nymphs of Euschistus heros (F.) (Hemiptera: Pentatomidae) on Bt and Non-Bt Soybean

Content Provider	Semantic Scholar
Author	Fonseca, Paulo Rogério Beltramin Da Fernandes, Marcos Gino Justiniano, Wagner Cavada, Leonardo Hiroito Silva, Jaqueline Aragoni Da
Copyright Year	2014
Abstract	The knowledge of the arrangements of dispersion of insect pests in soybean cultivars is needed to improve the monitoring and control. The objective of this study was to evaluate the spatial distribution of adults and nymphs of Euschistus heros in Bt and non-Bt soybean into two regions, under field conditions. The experimental area located in Dourados and Douradina, Mato Grosso do Sul. For the evaluations we used the method of cloth-to- beat, where we collected one sample per plot randomly from each experimental area. Evaluations were performed at 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98 days after emergence (DAE). For data analysis, the rates of dispersion (variance/average Morisita index and exponent k. Negative Binomial Distribution) and theoretical frequency distributions (Poisson, Binomial and Negative Binomial Positive) were estimated at 1-5 % probability. Adults of E. heros are arranged differently for Bt and non-Bt soybean and between regions, since in both cultivars and locations, individuals of the populations evaluated in probabilistic set arrangements negative binomial distribution (aggregate), Poisson (random) and positive binomial distribution (uniform), as the days after soybean emergence. The nymphs of E. heros showed aggregated spatial arrangement, being distributed similarly for Bt and non-Bt soybean and regions, setting a negative binomial distribution model.
Starting Page	131
Ending Page	131
Page Count	1
File Format	PDF HTM / HTML
DOI	10.5539/jas.v6n6p131
Volume Number	6
Alternate Webpage(s)	http://www.ccsenet.org/journal/index.php/jas/article/download/33616/20689
Alternate Webpage(s)	https://doi.org/10.5539/jas.v6n6p131
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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