Data/hora: 11/06/2024 04:02:56

Provedor de dados: | 111
País: | China
Título: | Accuracy and precision of phytonematode sampling plans
Autores: | Abd-Elgawad, Mahfouz Mohamed Mostafa.
Data: | 2018-04-17
Ano: | 2018
Palavras-chave: | Action thresholds; Berseem clover; Citrus; Economics; Nematode distribution; Rice.
Resumo: | Sampling accuracy and precision are basic to nematode research and rational management decision. Taylor's Power Law is used to determine sample size. The published power law parameters are used here differently to define levels of reliability associated with a fixed, cost-determined, sample size. Such levels may provide the decision-maker with more informative data on sampling methods and their reliabilities. Instead of solving for unknown sample number, the rearranged equation to solve for sampling accuracy permitted the use of exact Student’s t-values. The t-values for confidence limits and standard normal variate were used. Both statistical techniques resulted in identical confidence band, in terms of being below, at, or above the economic threshold level, in the majority of cases. Reckoning with new trends in collecting and processing samples, a 99% confidence interval above action threshold of Tylenchulus semipenetrans population with mean = 2500 at a precision of 80% or more would be attainable.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.cigrjournal.org/index.php/Ejounral/article/view/4371
Editor: | International Commission of Agricultural and Biosystems Engineering

Relação:

http://www.cigrjournal.org/index.php/Ejounral/article/view/4371/2640

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1766

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1767

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1768

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1769

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1770

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4371/1771

Formato: | application/pdf

Fonte:

Agricultural Engineering International: CIGR Journal; CIGR Journal, Special Issue (2017):  Ari-food and Biomass Supply Chains; 6-15

1682-1130

Fonte: | Copyright (c) 2018 Agricultural Engineering International: CIGR Journal