b a ckground: development of insecticide resistance occurred due to the continuous and misuse of synthetic insecti- cides therefore, the recent study was conducted to explore eco-friendly plant extracts that have some potential to sup- press mosquito larval population. m e t hods: who recommended mosquito larval bioassay method for insecticide was used while for the analysis of cit- rus oils fo...

to cope with cold stress, winter cereals regulate their development through adaptive mechanisms such as vernalization requirement. eight wheat and four barley cultivars were planted to determine the relationship between vernalization fulfilment and expression of cold tolerance under both field and controlled conditions. cultivars were planted at maragheh and karaj agricultural research stations...

The research was carried out to determine the effect of substitutional moringa stem bark extract (MB extract) with basil (BS on mortality, LC50 and LT50 Aedes aegypti larvae. design using completely randomized (CRD) consist 6 treatments including control (without MB BS extracts), 500 mg extract, 350 150 200 300 50 450 extract. Each treatment repeated 4 times. results variance analysis indicated...

Kulit bawang merah (Allium cepa L.) memiliki kandungan senyawa fitokimia yang berpotensi sebagai larvasida alami. Tujuan dari penelitian ini adalah mengetahui rendemen serta pengaruh lebih efektif antara pelarut metanol dan aseton ekstrak kulit terhadap larva Aedes aegypti. Metode digunakan metode eksperimental dianalisis secara deskriptif. Hasil ekstraksi diperoleh berturut turut yaitu dengan ...

The close proximity of Liwonde National Park to Liwonde town creates a unique situation of a large human population adjacent to a natural undisturbed animal reserve. The closeness of the two ecosystems has an impact on biology of mosquitoes of the area, such as susceptibility to insecticides. Susceptibility to insecticide was determined using knockdown bioassays. The mosquito, Anopheles gambiae...

Locusts and grasshoppers (acridids) are among the worst pests of crops and grasslands worldwide. Metarhizium acridum, a fungal pathogen that specifically infects acridids, has been developed as a control agent but its utility is limited by slow kill time and greater expense than chemical insecticides. We found that expression of four insect specific neurotoxins improved the efficacy of M. acrid...