Showing papers in "Journal of Stored Products Research in 2004"

TL;DR: An urgent need is highlighted for reviewing current fumigation practices in Morocco to ensure effective use of phosphine and avoid further selection of resistance in some of the insect populations.

TL;DR: Six out of 42 essential oils extracted from species of the family Myrtaceae found in Australia were shown to have potent fumigant toxicity against three major stored-grain insects: Sitophilus oryzae, Tribolium castaneum and Rhyzopertha dominica.

TL;DR: Results indicate that botanical products may provide effective control of C. maculatus in cowpea and that traditionally used African plants were repellent to the beetle.

TL;DR: Methods of using semiochemicals to control insect pests of stored grain, including attractants for mass trapping, repellents as protective bands and flushing agents, synchronised use of attractants and repellent to manoeuvre pests away from stored grain are reviewed.

TL;DR: Fumigant toxicity of the essential oils from Lavandula hybrida, Rosmarinus officinalis and Eucalyptus globulus against the eggs of Acanthoscelides obtectus was assessed and young eggs were more tolerant to essential oil vapours than the older ones.

TL;DR: The results indicated that gamma irradiation reduced fungal load and did not cause any significant change in proximate composition of walnuts as discussed by the authors, however, higher doses (1.5, 1.5 and 2.0 ) had a negative effect on sensory characteristics.

TL;DR: Evaluation of the efficacy and persistence of two commercially available enhanced diatomaceous earth (DE) products against four common tropical storage pests found that efficacy was inversely related to duration of storage and over time the host commodity also became less suitable for insect development.

TL;DR: In this paper, the authors used the gravimetric static method to measure the isosteric heat of desorption and adsorption of water from Gelidium sesquipedale.

TL;DR: Comparison of the spatio-temporal dynamics of these pests showed a segregation of populations, in both time and space, and a strong interaction among species is suggested.

TL;DR: Protein-enriched pea flour, DEET, neem, and pea protein extract reduced the penetration of S. oryzae, but defatted protein-en enriched pea wheat flour and peA protein extract did not, and DEET was less effective than DEET in reducing penetration and invasion of insects.

TL;DR: Flours made from three rice cultivars that showed resistance or susceptibility to feeding by Tribolium castaneum were studied, using two strains, resistant and susceptible to the organophosphate insecticide, malathion.

TL;DR: Chromatographic analyses indicated that the polyphenols were mainly cinnamic acids and flavones, the most abundant being rosmarinic acid, luteolin-7-glucoside and derivatives, and an attractive effect enhanced the toxicity.

TL;DR: A series of experiments were conducted in which different formulations of the insect growth regulator methoprene were evaluated for control of Rhyzopertha dominica, the lesser grain borer, a major internal insect pest of stored wheat.

TL;DR: In this article, the acaricidal activity of cinnamaldehyde and its 11 congeners against adults of Tyrophagus putrescentiae was examined using direct contact application and fumigation methods and compared with that of benzyl benzoate, N,N-diethyl-m-toluamide (DEET) and dibutyl phthalate.

TL;DR: Treatment with antibiotics and heat reduced or removed the bacterial infections and the egg production in treated individuals was greatly reduced and based on similarities in 16S rDNA sequences, the bacteria are identified as Wolbachia -like.

TL;DR: Results indicated that deltamethrin and beta-cyfluthrin, both at 0.25 ppm, were significantly more efficient than the other treatments, and Efficacy was notably higher after 7 d of exposure, than after 1 and 2 d.

TL;DR: Developmental stages of Rhyzopertha dominica were exposed to atmospheres containing 1%, 2%, 3%, 5%, 10% or 15% oxygen (O2) in nitrogen at 30°C and 70% r.h and respiration rates of eggs, larvae and pupae were proportional to the O2 levels.

TL;DR: Results show that thiamethoxam would be an effective protectant of stored maize seed and stored wheat seed and that T. castaneum in untreated maize and untreated wheat was very low compared with the other species.

TL;DR: Developmental time, fecundity, and egg hatch rate were determined for the Indian meal moth, Plodia interpunctella (Hubner), reared on fresh garlic seed at room temperature in Mexico and application of pirimiphos-methyl, malathion, and permethrin to 30 kg lots of garlic seed failed to prevent infestation and bulb damage by the larvae.

TL;DR: The fifth-instar was the most heat-resistant life stage in the tested temperature range of 50–52 � C except for diapausing larvae, who were dead after treatments at the lower temperatures or shorter times.

TL;DR: There is a risk of chronic exposure to aflatoxin for Beninese yam chips consumers because of producers, wholesalers and retailers complaining about storage problems and particularly about insect proliferation.

TL;DR: In this article, a backpropagation neural network (BPNN) and statistical classifiers were used to identify uninfested and infested kernels using the 57 extracted features.

TL;DR: Results show that the combination insecticidal product F2 was extremely effective on all three commodities at the rate of 100 ppm, as either a dust or slurry, and could be used as a commodity protectant.

TL;DR: In this paper, the fate of aflatoxin B 1 and B 2 during maize nixtamalization by two tortilla-making processes was studied during maize seed (AS-900) and a toxigenic strain of Aspergillus flavus.

TL;DR: Developmental stages of three stored-product insect pests viz.

TL;DR: In this article, a two-dimensional representation of a cylindrical concrete bin (33 m tall 6.4 m wide) and hourly weather data were used to predict changes in grain temperature and moisture.

TL;DR: In this article, the toxicity of the fumigant propylene oxide (PPO) alone and in combination with low pressure (100mm Hg or 92% CO2) to all life stages of Tribolium castaneum using short exposure times (4 and 8h) at 30°C was studied.

TL;DR: It was shown that abundance of larvae in maize samples was a poor predictor for the occurrence of P. interpunctella individuals in indirect samples.

TL;DR: Physiological and morphological changes in the ovarian system in rice weevils, Sitophilus oryzae (L.) (Coleoptera: Curculionidae), reared on wheat seeds were studied as a function of adult age, mating status, and nutrient availability.

TL;DR: It is suggested that the only reliable way of predicting the effectiveness of resistant varieties in the field would be to test them against local populations in the areas targeted for release, under local environmental conditions.