Experiments were carried out to assess the protectant ability of cow dung ash (CDA) maize grains against Sitophilus zeamais Motsch. under laboratory conditions 28-32oC and 60-75% relative humidity (R.H.). The CDA at different doses 0.625, 1.25, 2.50, 5.00, 10.00% (w/w) used permethrin powder 0.625% as positive control, negative control also set up in Petri dishes which no or ashes added. Five p...

In many countries, small corn producers generally have technological limitations during storage. hermetic storage with use of PET bottles stands out as an alternative. The objective this study was to evaluate the in polyethylene silo bags and alternative for producers. Maize grains were stored bags, terephthalate (PET) glass recipients 0, 15, 30, 45, 60 days. Were used four repetitions each tre...

Peas (Pisum sativum) are toxic to some stored-product insects. The repellent effect of fractions of pea seed to stored-product insects was evaluated in multiple-choice tests in which wheat kernels were dusted with fractions rich in either protein, fibre or starch at 0.001 to 10% (wt:wt). There was a negative correlation between pea protein concentration and the number of adults found in grain f...

The aim of this research was to determine chemical composition and insecticidal activity of the essential oil of Illicium pachyphyllum fruits against two grain storage insects, Sitophilus zeamais and Tribolium castaneum, and to isolate any insecticidal constituents from the essential oil. The essential oil of I. pachyphyllum fruits was obtained by hydrodistillation and analyzed by GC-MS. A tota...

Powdered dry root bark of Securidaca longepedunculata was mixed with maize and cowpea and effectively reduced the numbers of Sitophilus zeamais and Callosobruchus maculatus emerging from these commodities, respectively, more than 9 months after treatment. This effect was reciprocated in grain treated with a methanol extract of the root bark, indicating that compounds were present that were ovip...