Biotransformation and time-dependent toxicity of pyrene and fluorene, in the presence and absence of the biotransformation inhibitor 6-propylpiperonyl butyl diethylene glycol ether known as piperonyl butoxide (PBO), were investigated in Hyalella azteca. Toxicokinetics and biotransformation were determined in both short- and longterm experiments. For pyrene, the uptake rate coefficient (ku = 99 ...

The citrus red mite, Panonychus citri (McGregor), is an important pest of in China, where pesticides are commonly used orchards. In order to reduce the use chemical against P. and development resistance, screening biological control agents has attracted attention students. this study, seven plant essential oils with high toxicity were selected from 40 by leaf-dip bioassay, including lemongrass,...

This research, under laboratory condition, evaluated the efficiency of different strains entomopatogenic fungus Beauveria bassiana to control leaf-cutting ant Atta sexdens rubropilosa. Soldiers and workers were inoculated with suspensions containing 1.0x107, 1.0x108, 1.0x109 1.0x1010 con mL-1 maintained in B.O.D, at 25±1°C, 70% RH 12 hours photophase, without food. The mortality was daily, 15 d...

background and objectives: cold stress is one of the most important limiting factor for growth and development of grasses in temperate regions. freezing tolerance is highly different between plant species and between regions. the importance of grasses is due to widespread application in lawn beautifying, animal feeding, and erosion control. there are many differences between grass species in re...

In this study, the entomopathogenic fungi; Beauveria bassiana, Isaria fumosorosea and Metarhizium anisopliae were evaluated against fourth nymphs adults of green shield bug, P. prasina. The experiment was conducted both under field laboratory conditions. Isolates included six one fumosorosea. bioassayed in Four replications bioassays analyzed daily for 14 days. LT50 LT95 values experimented iso...

Streptomyces sp. and Trichoderma are soil microorganisms isolated from shallot fields that can act as biological agents increase crop production. Nezara viridula, the southern green stink bug, is leading pest of soybean during generative period, which cause damage up to 80%. This study aimed determine efficacy a liquid biopesticide formula using mixture coconut water potato extract containing u...

Minyak esensial rosemari telah banyak digunakan di berbagai bidang karena manfaatnya bagi kesehatan. Salah satu manfaat yang kurang diketahui adalah sifat antiparasitnya. Penelitian ini bertujuan menganalisis pengaruh pemberian minyak terhadap waktu kematian caplak Rhipicephalus sanguineus. Pada penelitian ini, 50 ekor dibagi menjadi 5 kelompok dan masing-masing mendapatkan perlakuan berbeda ya...

Salah satu faktor yang mempengaruhi dalam penurunan hasil dan kualitas ubi jalar adalah serangan hama Cylas formicarius. Cendawan entomopatogen Lecanicillium lecanii merupakan salah agens hayati dapat digunakan untuk mengendalikan berbagai jenis serangga hama. Penelitian ini bertujuan mengetahui pengaruh aplikasi cendawan entomopotagen L. imago C. Metode metode eksperimen rancangan percobaan Ra...