Effects of weevils on maize

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August undefined, 2024

WebThe effects of aqueous and oil leaf extracts of Pterocarpus santalinoides at concentrations of 5, 10, 15 and 20%v/v, each as proctectant in the control of the maize weevil, Sitophilus zeamais, were compared with a conventional insecticide, pirimiphos-methyl at a rate of 0.5 ml / 50 g maize grains of Oba Super II variety in a Completely Randomized Design with … WebMaize weevil has only 8 polymorphic and amplifiable microsatellite loci identified [9]. Historically, it was challenging to generate a large number of informative SNPs for a non- …

Population genetic structure of the maize weevil, Sitophilus …

WebThe effects of known mycotoxins on these insects are minimal (Wright et al. 1980b, 1982). General Recommendations. Maize at "safe" moisture contents for storage or above is … WebJan 4, 2024 · The maize weevil, Sitophilus zeamais, and the red flour beetle, Tribolium castaneum, respectively, are among the most destructive primary and secondary pests that are responsible for food insecurity rural poor (Hiruy & Getu, 2024; Srivastava & Subramanian, 2016 ). foundry courses for 35f

Assessment of insect nfestation in stored maize and their …

WebThe maize weevil has a snout/beak and elbowed antennae. The antennae have eight segments and are often carried in an extended position when the insect is walking. The larvae of the maize weevils tend to be white flesh and legless. The wing cases normally have red brown or orange brown oval markings. Distinct features WebThe first study found 100% maize weevil mortality for hermetically sealed containers and the oxygen levels inside them declined from 21% to between 3 and 10%. From the maize, maize-amaranth experiment, it was concluded that blending maize with amaranth during storage reduced maize weevil population growth by 46% compared to storing maize alone. WebDec 1, 2024 · The results of the study show that all the botanicals were effective in the treatment and prevention of maize weevil from invading stored maize grain and their use could be adopted in prolonging ... foundry course catalog

Pesticide free methods of maize weevil control in stored maize …

Effect of X-ray irradiation on the F1 generation of Sitophilus …

WebThe maize weevil is a small snout beetle which varies in size, averaging about three thirty-seconds inch in length. It varies from dull red-brown to nearly black and is usually … WebMaize is the major food staple in Eastern and Southern Africa; it is mostly produced and stored on small-scale farms, prone to storage losses from pests (in particular maize … foundry convertible cribWebJun 8, 2024 · Approximately, 500 g of Maize Kernels in glass jars were moisture equilibrated in an incubator for a period of one week before infesting with 300 unsexed weevils (Miller et al.,; 1969). In order to obtain test insects of known or similar age, these weevils were allowed to ovipositor for seven days, after discharging student loans due to disability

"WebJun 2, 2016 · It is to this effect that this study endeavoured to establish the doses of eucalyptus leaf powder that could be used in suppression of maize weevils by small-scale farmers. The study focussed on weevil population dynamics (weevil mortality) in treated samples as well the grain loss (% grain weight loss). " - Effects of weevils on maize

Effects of weevils on maize

Maize Weevil Photos and Premium High Res Pictures - Getty Images

Web2 days ago · The maize weevil, Sitophilus zeamais, is a ubiquitous pest of maize and other cereal crops worldwide and remains a threat to food security in subsistence communities. ... We employed strict SNP filtering to manage large next generation sequencing lane effects and this study is the first to find fine-scale genetic population structure in the ... Web2 days ago · This study determined the seed generation effect on the quality of genetic information obtained from a maize diallel cross. Eight weevil-resistant and two susceptible maize inbred lines from ...

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WebThe maize weevil, Sitophilus zeamais, is a ubiquitous pest of maize and other cereal crops worldwide and remains a threat to food security in subsistence communities. ... We … Webeffect to S. zeamais and P. truncatus in grains treated with the botanicals. Maize ... (Throne & Eubanks, 2002). Maize weevil, show cosmopolitan distribution, occurring in numerous …

WebApr 12, 2024 · Therefore, despite having a myriad of control methods, maize weevils continue to cause grain loss, especially in subsistence communities [ 1 ]. Few population genetic studies have been conducted on the maize weevil and its sister species, the rice weevil, S. oryzae [ 8 – 12 ]. WebThe ability of the plant powders to protect maize grains from the weevils was assessed in terms of mortality rates after 24 to 96 h of post-treatment, percentage grain weight loss …

WebOct 26, 2024 · However, maize weevil is predominantly found associated with corn grain, whereas rice weevil is often associated with wheat. Disturbance of the grain causes adult rice and maize weevils to migrate upwards and become visible on the surface of the grain mass. Adults: Rice weevils and maize weevils are almost indistinguishable from each … Webstored maize include: • The Grain weevil (Sitophilus zeamais), which can fly and the Granary weevil (Sitophilus granarius), which cannot fly. • Angoumois Grain Moths (Sitotroga cerealella). • Grain borers: Larger grain borer (Prostephanus truncates) and the lesser grain borer (Rhyzopertha dominica).

WebNov 1, 2024 · Loss of the nutritional and physical properties of stored food stuff due to infestation by weevils, bruchids and other insects and pests is very common. Deterioration of quality and quantity of the food stuff is greatly affected by physical, biological, chemical and engineering factors.

WebHowever, breeding maize crop to improve resistance against the maize weevil is associated with some technical limitations. These limitations include lack of inter-specific … foundry courtenay facebookWebMay 17, 2024 · The results revealed 10% mortality of adult weevils after 24 h and 40% mortality after a period of 7 days. The result indicates moderate effect on mortality. Progressive increase in mortality was recorded as dose increased from 60 to 80 KeV. foundry courtenay discharging swimming pool waterWebThe effects of known mycotoxins on these insects are minimal (Wright et al. 1980b, 1982). General Recommendations. Maize at "safe" moisture contents for storage or above is particularly vulnerable to maize weevil attack with subsequent rapid increases in weevil numbers, moisture content, temperature, growth of storage fungi and secondary insects. foundry court prestonWebThis study determined the seed generation effect on the quality of genetic information obtained from a maize diallel cross. Eight weevil-resistant and two susceptible maize … discharging surface water into a riverWebAmong the selected extracts, the aqueous extracts of N. tabacum and W. coagluans prolonged the growth of maize weevil and inhibited the fresh progeny of adults from … foundry courtenay bcWebJan 1, 2024 · The optimum humidity of each insect varies according to the development type and stage of life. In addition, humidity affects the evaporation of the insect's body preference for places to live and... discharging taxes in chapter 7