Showing papers in "Journal of Stored Products Research in 1992"

TL;DR: The proposed behavioral, physiological, and biochemical mechanisms that enable stored-product insects to survive extreme temperatures are reviewed and the use of ice-nucleating active bacteria to increase the supercooling points of insects, thereby making them less cold-hardy is suggested.

TL;DR: It is suggested that the differences in egg structure between genera may explain the traditional use of oils for Callosobruchus control but lesser use for control of other genera and changes could be made to the physical characteristics of oils, in the light of the funnel dimensions, to enhance their effects.

TL;DR: Phenolics in maize, Zea mays L., grain were assessed as a possible factor or indicator of resistance to two stored product insect pests and fluorescence was most intense in the aleurone layer, pericarp and embryo but less intense inThe endosperm.

TL;DR: The aerial parts of Lantana camara were investigated for their insecticidal, antiovipositional and antifeedant activity against Callosobruchus chinensis and showed complete feeding deterrent action at 5% concentrations.

TL;DR: Three treatments effectively reduced A. obtectus damage below the economic threshold determined in this study, and the potential for small-farmer adoption of these and less successful treatments is evaluated.

TL;DR: The rapid growth of insects resulted in increases in moisture content of grains, dust weight production, A. flavus infection, and aflatoxin accumulation, in contrast to decrease in germinability.

TL;DR: The Savannah trap, developed from a tennis ball canister, was found to be the most effective pheromone trap in capturing adult Tribolium castaneum under simulated warehouse conditions.

TL;DR: Adult emergence was completely prevented by karanj oil at 0.75 and 1% and neem oil at all levels up to 100 days and there was no adverse effect of the various oils on seed germination.

TL;DR: In this article, the construction and testing of a solar heater for eliminating Callosobruchus maculatus (F) infestations in 50 kg cowpea bulks is described.

TL;DR: Suggestions given for future directions in ecosystem-based research on the postharvest grain system are drawn from systems in several areas of the world and include examples of reverse technology.

TL;DR: Heat combined with controlled atmospheres increased mortality of Tribolium castaneum (Herbst) larvae when temperatures of ≥38°C were combined with carbon dioxide enriched or oxygen deficient atmospheres.

TL;DR: Observations of adult emergence and their progeny revealed that though all the temperatures were effective in causing sterility, exposure to 45°C was particularly effective in suppressing adult formation.

TL;DR: Mould and mycotoxin contamination in stored sorghum in different storage containers viz.

TL;DR: Treatments which successfully controlled bruchids in on-farm experiments were evaluated and analysis of bruchid damage on seed quality showed a decline in germination and seedling vigor related to the number of emergence holes.

TL;DR: The resistance of unshelled kernels to the maize weevil, relative to shelled kernels, is shown to depend on three factors: reduced oviposition, an increase in weevil median development period (MDP) due to the less suitable endosperm diet of first instar larvae, and other kernel and cob characteristics which appear to contribute to resistance.

TL;DR: In this paper, nine Tribolium confusum Duv. field strains were exposed on galvanized steel and plywood panels treated with malathion at 1.63 g a.i.

TL;DR: There were substantial losses in thiamine, riboflavin and niacin contents of wheat, maize and sorghum grains at three infestation levels (25, 50 and 75%) caused by releasing two insect species viz., Trigoderma granarium and Rhizopertha dominica separately and mixed population.

TL;DR: The presence of an oviposition marker in C. subinnotatus enabled the female bruchids not only to distinguish between egg-laden and pristine control seeds, but also to assess egg loads quantitatively.

TL;DR: The management of stored grains and oilseeds is a complex process as mentioned in this paper and an effective interaction among many scientific disciplines is needed for effective grain management, such as entomologists, acarologists, mycologists, biochemists, toxicologists, geneticists, ecologists, and mycotoxicologists, interact with physical scientists such as agricultural engineers, computer modellers, and food scientists, as well as economists and statisticians.

TL;DR: Statistical analyses showed that the microwave power level and time individually, and power level × time interactions were significant for most quality characteristics, particularly at 14 and 16% m.c.

TL;DR: In this paper, the authors established heat and mass transfer equations expressed in terms of volume averaged quantities, and used these equations to develop constraints that indicate a priori the level of detail required to accurately simulate a ventilated bed of food grains.

TL;DR: These results provided no evidence of a link between physiological resistance and behavioural avoidance, and the presence of food-filled refuges considerably reduced the mortality of both resistant and susceptible strains in insecticide-treated arenas.

TL;DR: In this article, the authors carried out order of magnitude analyses aimed at determining when these deviations are negligible so that local mass or thermal equilibrium may be deemed to have been approached, and the analysis showed that thermal equilibrium is always likely to exist in a bulk of aerated grain, but mass equilibrium is attained only as the elapsed time of the process increases or when the grain size is small.

TL;DR: Diflubenzuron, applied to wheat at low doses (0.2–0.6 mg kg −1 ), prevents development of first generation progeny of Sitophilus oryzae and S. granarius species except those developing from a short period of oviposition immediately after application.

TL;DR: The mite fauna of stored grain seeds was studied in a total of 108 samples of wheat, barley, and rice collected from central Iraq, finding the highest number of species and number of individuals were recorded in November on rice.

TL;DR: Estimated exposure times needed to accomplish specified levels of mortality in cold disinfestation treatments, used against T. bisselliella eggs were closely similar to those observed.

TL;DR: It is concluded that yeast additive 2% in poison bait can be helpful in enhancing poison bait acceptance by R. norvegicus, thus achieving successful control of this important commensal pest.

TL;DR: The influence of storage structures on aflatoxins contamination is discussed and the incidence of Aspergillus flavus and levels of aflatoxin B 1 were highest in the samples collected from gunny bags.

TL;DR: The effects of enclosing five biotypes of Zabrotes subfasciatus (Boh.) on three different cultivars of the common bean, Phaseolus vulgaris, have been measured.

TL;DR: In this article, a regional model is developed to predict pest infestations in farm granaries on the Canadian prairies to help local extension personnel warn farmers of potential infestation, and recommend intensive monitoring of their grain and proper management actions.