2019
DOI: 10.5539/jas.v11n15p97
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Abstract: The beetle M. fryanus causes serious damage to cassava in Brazil. However, due to the subterranean behavior of the larvae and the recent appearance of this pest in cassava, little is known about the main behavioral characteristics and damage caused to this crop. The main aim of this study is to demonstrate the variation of starch production in the roots of M. esculenta as a result of the intensity of damage caused by M. fryanus. The study was carried out in a commercial cassava farm in Paraná, Brazil. The prop… Show more

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Cited by 1 publication
(6 citation statements)
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“…Thus, the starch obtained under conditions observed in this study, and coming from roots that suffered more severe damage by M. fryanus, can cause changes in the viscosity of the starch suspension and of the gel that is formed, resulting in the restriction of its use, mainly in conditions in which a product with a high degree of transparency is needed, according to (Song et al, 2010). The study performed by Guerreiro et al (2019) in addition to demonstrating a drop in starch productivity, describes the external and internal damage of the attacked roots, and determines that the roots with the greatest losses, in terms of production, are those that suffer from perforation and penetration of larvae in their internal part.…”
Section: Resultsmentioning
confidence: 87%
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“…Thus, the starch obtained under conditions observed in this study, and coming from roots that suffered more severe damage by M. fryanus, can cause changes in the viscosity of the starch suspension and of the gel that is formed, resulting in the restriction of its use, mainly in conditions in which a product with a high degree of transparency is needed, according to (Song et al, 2010). The study performed by Guerreiro et al (2019) in addition to demonstrating a drop in starch productivity, describes the external and internal damage of the attacked roots, and determines that the roots with the greatest losses, in terms of production, are those that suffer from perforation and penetration of larvae in their internal part.…”
Section: Resultsmentioning
confidence: 87%
“…Some studies have reported that the damage caused by M. fryanus in cassava can range from simple scraping of the root cortex to progress into open galleries, implying the possibility of penetration of opportunistic microorganisms, according to Bellotti et al (1999) and Pietrowski et al (2010). Furthermore, it was possible to relate the possibility of a decrease in the starch content produced in the roots damaged by M. fryanus, according to Guerreiro et al (2019), however, the influence of damage caused by soil pests on the quality of starch produced by cassava roots was still not common knowledge, hence the emphasis on the results presented in this research We noted that as a result of feeding and damage caused by M. fryanus there was a strong relationship in the alteration of starch quality, and it was found that the infestation by the coleopteran larvae of the cassava roots could directly interfere with the color of the extracted starch, with a tendency to darken it, as the intensity of pest damage to the roots increased. The damage caused by M. fryanus and observed in this study indicate a loss in the excellence of the quality of the cassava starch, which according to (Abraham, 1993) must be related to the white color of this material.…”
Section: Resultsmentioning
confidence: 99%
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