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| Cargnelutti Filho, Alberto; Silveira, Daniela Lixinski; Bubans, Valéria Escaio; Osmari, Bruno Fillipin; Somavilla, Felipe Manfio; Ortiz, Vithória Morena; Osmari, Lucas Fillipin. |
| Objectives of this work were to determine the sample size (number of plants) to estimate the mean of slender leaf rattlebox (Crotalaria ochroleuca) traits and investigate the relations among traits. In an experimental area of 8 m × 20 m (160 m2), at 147 days after sowing, 110 plants were randomly selected. The following traits were evaluated for each plant: plant height, stem diameter, number of nodes, number of leaves, leaf fresh matter, stem fresh matter, shoot fresh matter, leaf dry matter, stem dry matter and shoot dry matter. Measures of central tendency, variability, skewness and kurtosis were calculated. Normality was verified using the Kolmogorov-Smirnov test and the sample size was calculated to estimate the mean of the traits, assuming estimation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria ochroleuca; Sample sizing; Experimental precision; Correlation; Path analysis; Crotalaria ochroleuca; Dimensionamento amostral; Precisão experimental; Correlação; Aanálise de trilha. |
| Ano: 2022 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6834 |
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| Stürmer,Glauber Renato; Cargnelutti Filho,Alberto; Guedes,Jerson Vanderlei Carús; Stacke,Regis Felipe. |
| It is important to quantify the population of stink bugs in the soybean, in order to determine the actions which are necessary for their control to protect the crop from losses in production, together with a reduction in cost and less environmental impact. The objectives of this study were to determine the sample size (the number of sampling points) needed to estimate the average population density of the bugs, and to verify the variability in sample size for the phases and species of the bugs and the phenological stages of the plants. In an area of 6.16 ha of soybeans, a grid of 154 sampling points, spaced 20 × 20 m apart, was laid out. Population-density data were collected for nymphs and adults of the species Dichelops furcatus (Fabricius, 1775),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sample sizing; Experimental error; Pentatomidae. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000100019 |
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