the sub-lethal effect of metarhizium anisopliae and imidacloprid as well as combination of the two control agents was examined on life table parameters of myzus persicae on different cultivars of canola under laboratory condition at 25 ± 1 ºc, 85% rh and photoperiod of 16l: 8d. the offspring resulting from fungus-infested adults were placed onto leaf discs in petri dishes separately to record t...

results modern investigations have supported the claims of the insecticidal activity of several plants, including allium sativum, artemisia absinthium, citrullus colocynthis, laurus nobilis, mentha pulegium, myrtus communis, nerium oleander, ocimum basilicum, and origanum majorana. however, in the cases of plants like iris florentina and malva sylvestris, there is not enough evidence in modern ...

Prophylactic use of broad-spectrum insecticides is a common feature of broad-acre grains production systems around the world. Efforts to reduce pesticide use in these systems have the potential to deliver environmental benefits to large areas of agricultural land. However, research and extension initiatives aimed at decoupling pest management decisions from the simple act of applying a cheap in...

Application of insecticide at a reduced rate with a cucurbitacin-based feeding stimulant is a viable alternative to a broadcast insecticide application for control of adult western corn rootworms, Diabrotica virgifera virgifera, LeConte. Because of the small amount of material applied, it is conceivable that a high density of beetles could consume all of the spray residue before economic contro...

Chemical insecticides are critical components of malaria control programs. Their ability to eliminate huge numbers of mosquitoes allows them to swiftly interrupt disease transmission, but that lethality also imposes immense selection for insecticide resistance. Targeting control at the small portion of the mosquito population actually responsible for transmitting malaria parasites to humans wou...

Bradysia odoriphaga (Diptera: Sciaridae) is the most important pest of Chinese chive. Insecticides are used widely and frequently to control B. odoriphaga in China. However, the performance of the insecticides chlorpyrifos and clothianidin in controlling the Chinese chive maggot is quite different. Using next generation sequencing technology, different expression unigenes (DEUs) in B. odoriphag...

Possibility of monitoring insecticide resistance in the diamondback moth by analyzing the insensitivity of cholinesterase (ChE) which is resistant to organophosphates and carbamates was investigated. Four kinds of ChE genotypes were found and inherited by incomplete dominance factors. Against propoxur and monocrotophos, each ChE genotype showed LD50 in proportion to the values of I50. Differenc...

Cytogenetic evaluations of pyrethroid insecticide cyhalothrin (lambda) were investigated in mice in vivo by recording chromosomal aberrations in bone marrow cells and in primary spermatocytes. Cyhalothrin (lambda) insecticide was orally administrated with 2, 2.5, 5 mg/kg b.wt. (1 ∕10, 1 ∕8, 1 ∕4 LD50 doses respectively) for repeated treatment. Cyhalothrin (lambda) was found to produce a signifi...

Grassland bird species have experienced substantial declines in North America. These declines have been largely attributed to habitat loss and degradation, especially from agricultural practices and intensification (the habitat-availability hypothesis). A recent analysis of North American Breeding Bird Survey (BBS) "grassland breeding" bird trends reported the surprising conclusion that insecti...

b a ckground: the german cockroach, b lattella germanica is a major hygienic pest and mechanical vector for path- ogenic agents in hospitals and residential areas. the development of insecticide resistance is a serious problem in controlling of this pest. toxicity of four commonly used insecticides (permethrin, cypermethrin, malathion and chlorpyrifos) against two hospital- collected strains of...