Comparative Effect of Grain Moisture on the Biological Activity of Protect ants on Stored Corn

Samson, Peter R.; Parker, R.J.; Jones, Alan L.

doi:10.1093/jee/81.3.949

Cited by 23 publications

(10 citation statements)

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“…Considering the lowest grain moisture content at 60 days for the deltamethrin treatment, when compared to the control content (Table 3) and when related to the lowest values of live insects (Table 2), it can be inferred that the low grain moisture may have been a positive factor for the efficiency of deltamethrin, confirming what has been described by Samson et al (1988), who reported that insecticides are more stable when in contact with grains with lower humidity content. Lahóz (2008) had also observed this effect when working with insecticides in S. zeamais control and added that the low grain moisture decreases oviposition of insects.…”

Section: Resultssupporting

confidence: 82%

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

et al. 2016

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Sitophilus species are major pests of stored grain and their control is achieved mainly with the use of chemical insecticides, but the indiscriminate use of these products is resulting in several undesirable factors to man and to the environment. Thus, the use of natural insecticides comes as an option to control the insects, while lessening risks to the environment. The study was conducted at the Institute of Agricultural Sciences and Technologies, Rondonópolis campus of the Federal University of Mato Grosso, in the period from March to September 2012. The experiment was conducted under three different storing conditions. Aqueous extracts were obtained by the addition of Allium sativum L, Azadirachta indica A. Juss. and Cymbopogon winterianum Jowitt vegetable powders in distilled water, at a ratio of 5 g per 100 ml, and the levels of chemical insecticides were of 0.04 and 0.15 ml/100 ml of water for deltamethrin and chlorpyrifos, respectively. Treatments were added to the corn grains, which were placed in a 2.5 L glass container, mixed by manual shaking and infested with 20 adults of unsexed Sitophilus zeamais. Grains were stored for 60 days. At 30 and 60 days, the following items were analyzed: bugs count, water content in grains and electrical conductivity. The data were submitted to analysis of variance, and means were compared by Tukey test at 5% probability. At 30 days, the efficiency of chemical insecticides in the control of Sitophilus zeamais was observed in the three storage environments. Vegetal extracts were not effective in controlling insects. The larger number of insects increased the electrical conductivity and humidity values in the grains.

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Section: Resultssupporting

confidence: 82%

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

et al. 2016

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“…Higher temperatures generally lead to greater rates of decay of protectant efficacy (Athanassiou et al, 2008). The influence of higher safe level of temperature is shown by reduced efficacy (Samson et al, 1988). Whereas the insecticidal potency of Actellic Super dust ® has been shown to reduce with time (Denloye et al, 2008), the inadequate control of P. truncatus and S. zeamais could not be attributed to the ambient temperatures.…”

Section: Discussionmentioning

confidence: 99%

Combined Effect of Hermetic Bag and Insect Resistant Variety for the Control of Larger Grain Borer and Maize Weevil in Stored Maize

Likhayo¹,

Tefera²,

Mugo³

et al. 2015

IJSR

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“…Studies conducted by Samson et al, 1988 andArnason et al, 1992, show that most of the chemicals used to protect corn against stored product insects in tropic climates have low effectiveness and insects build resistance to them. To avoid creating stronger pests and yet reducing postharvest losses of corn in developing countries, the use of resistant varieties like flint corn remain the best option, and many scientists considered it as a sustainable way of integrated pest management strategy (García-Lara et al, 2010;Arnason et al, 1992;Adebe et al, 2009).…”

Section: Pagementioning

confidence: 99%

Is Flint Corn Naturally Resistant to Maize Weevil Infestation?

Suleiman¹,

Williams²,

Nissen³

et al. 2014

2014 ASABE Annual International Meeting

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Sitophilus zeamais (maize weevil) is one of the most destructive pests of maize stored in tropical and subtropical regions. This study determined the resistance of flint corn and dent corn to infestation by S. zeamais (Motschulsky), the maize weevil. Improved King Philip hybrid flint corn and Fontanelle 6T-510 hybrid dent corn were used in this experiment. Two temperature conditions (10 °C and 27 °C) and two storage times (15 days and 30 days) were used. Results showed that flint corn was more resistant to insect damage than dent corn at 27 °C and 30 day storage time. After 30 days storage time and 27 ºC death rate was significantly higher in flint corn (R2 = 0.945) compared to (R2 = 0.634) in dent corn. Damaged seed was 10% higher in dent corn then in flint corn at 27 ºC and 30 days. However, no significant difference was observed for seed weight loss between flint corn and dent corn at the same storage conditions. Both dent and flint corn are extensively cultivated in developing countries. It appears that storage of flint corn may be one promising solution to reducing corn damage and infestation problems in the tropics and in developing countries, but more research is needed.

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Comparative Effect of Grain Moisture on the Biological Activity of Protect ants on Stored Corn

Cited by 23 publications

References 0 publications

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

Chemical pesticides and vegetal extracts on Sitophilus zeamais control in stored corn grains

Combined Effect of Hermetic Bag and Insect Resistant Variety for the Control of Larger Grain Borer and Maize Weevil in Stored Maize

Is Flint Corn Naturally Resistant to Maize Weevil Infestation?

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