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| Bustos-Figueroa,Gabriel; Osses-Ruiz,Francisco; Silva-Aguayo,Gonzalo; Tapia-Vargas,Maritza; Hepp-Gallo,Ruperto; Rodríguez-Maciel,J. Concepción. |
| The insecticidal properties of boldus (Peumus boldus Molina) powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky) were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence) and temperature (room temperature vs. 3 ºC) on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w) of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50) for all treatments was < 5 g kg-1, while LC90 was 11 g kg-1. Mixing corn grains with different insecticidal treatments did not affect maize germination. Temperature and aeration did not influence mortality of maize... |
| Tipo: Journal article |
Palavras-chave: Boldus; Maize weevil; Stored corn. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300007 |
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| Caneppele,Maria Aparecida Braga; Caneppele,Carlos; Lázzari,Flávio Antonio; Lázzari,Sonia Maria Noemberg. |
| This experiment was carried out in order to evaluate the effect of Sitophilus zeamais on physical, physiological and sanitary quality of stored corn. Samples of 500 g of the hybrid OC-705, in three replicates, were conditioned in glasses covered with a screened lid, and kept in chamber at 25±2ºC, 70±5% RH and 12 h of photophase, for 150 days. The infestation levels were 0, 5, 15 and 50 adults/replicate, for the storage periods of 30, 60, 90, 120 and 150 days. The moisture content, classification, weight loss, germination and internal infestation were evaluated monthly. Significant inverse correlations were verified between the number of insects and both the germination and the weight loss; also between the internal infestation and the germination and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize weevil; Quality factors; Stored corn; Commercial grade. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000400015 |
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