Results 191 to 200 of about 9,922,149 (262)

Acaricide Resistance in Field-Collected Two-Spotted Spider Mite Tetranychus urticae Koch

Indian Journal of Entomology, 2022
Two spotted spider mite Tetranychus urticae Koch is an economically serious pest posing threat to major vegetable crops. Roving survey in and around Coimbatore region revealed that farmers do not target mites with acaricides instead they use higher dose ...
Naveena K., S. M., C. C., J. J., Ramasubramanian T., M. M L, R. R.   +6 more
semanticscholar   +1 more source

Screening of medicinal plants of rwanda for acaricidal activity

Journal of Ethnopharmacology, 1985
A series of 108 samples from 42 medicinal plants of Rwanda have been screened for acaricidal activity against the female tick Rhipicephalus appendiculatus. Two plants, Solanum dasyphyllum (fruits) and Neorautanenia mitis (roots) showed apparent acaricidal activity in the petroleum ether fraction.
L, Van Puyvelde, D, Geysen, F X, Ayobangira, E, Hakizamungu, A, Nshimiyimana, A, Kalisa   +5 more
openaire   +2 more sources

Acaricidal Potentials of Active Properties Isolated from Cynanchum paniculatum and Acaricidal Changes by Introducing Functional Radicals

Journal of Agricultural and Food Chemistry, 2013
This study evaluated the acaricidal activities of acetophenone and its derivatives for their potentials as natural acaricides using an impregnated fumigant bioassay against Dermatophagoides spp. and Tyrophagus putrescentiae . On the basis of the LD50 values against D.
Min-Gi, Kim, Ji-Yeon, Yang, Hoi-Seon, Lee   +2 more
openaire   +2 more sources

Synthesis and acaricidal activity of strobilurin-pyrimidine derivatives

Chinese Chemical Letters, 2014
Abstract Pyriminostrobin, a new acaricide, was discovered in our previous studies. Because introducing fluorine into organic compounds can increase bioactivity, pyriminostrobin was modified as a series of strobilurin-pyrimidine derivatives for biological screening. The compounds were characterized by 1 H NMR, MS and elemental analysis.
Bao-Shan Chai, Chang-Ling Liu, Hui-Chao Li, Shao-Wu Liu, Ying Xu, Yu-Quan Song, Jun-Biao Chang   +6 more
openaire   +1 more source

Factors influencing the acaricidal activity of flucycloxuron

Entomologia Experimentalis et Applicata, 1993
AbstractContact activities of flucycloxuron on immature stages of the two‐spotted spider mite (Tetranychus urticae (Koch)) and the European red mite (Panonychus ulmi (Koch)) gradually decrease in the successive developmental stages. The levels of contact activity of flucycloxuron on larvae and protonymphs of T. urticae and P. ulmi are of the same order.
openaire   +1 more source

Rapid structural characterisation of benzylisoquinoline and aporphine alkaloids from Ocotea spixiana acaricide extract by HPTLC-DESI-MSn.

Phytochemical Analysis, 2020
INTRODUCTION Lauraceae alkaloids are a structurally diverse class of plant specialised secondary metabolites that play an important role in modern pharmacotherapy, being useful as well as model compounds for the development of synthetic analogues ...
Rodrigo S Conceição, I. Reis, A. P. M. Cerqueira, C. Perez, Manoelito C S Junior, A. Branco, D. Ifa, M. Botura   +7 more
semanticscholar   +1 more source

Synthetic Pyrethroid, Natural Product, and Entomopathogenic Fungal Acaricide Product Formulations for Sustained Early Season Suppression of Host-Seeking Ixodes scapularis (Acari: Ixodidae) and Amblyomma americanum Nymphs

Journal of medical entomology, 2020
We compared the ability of product formulations representing a synthetic pyrethroid acaricide (Talstar P Professional Insecticide), a natural product-based acaricide (Essentria IC3), and an entomopathogenic fungal acaricide (Met52 EC Bioinsecticide) to ...
T. Schulze, R. Jordan
semanticscholar   +1 more source

Acaricide resistance and mechanisms in Tetranychus urticae populations from greenhouses in Turkey

Systematic and Applied Acarology, 2020
Turkey has great potential in vegetable production especially in greenhouses. However, plant pests such as Tetranychus urticae Koch can cause significant yield losses with the contribution of suitable climate conditions of greenhouses that allow to fast ...
Y. N. Alpkent, Emre Inak, S. Ulusoy, R. Ay   +3 more
semanticscholar   +1 more source

Acaricidal Activity of Boenninghausenia sessilicarpa Against Panonychus citri

Agricultural Sciences in China, 2009
Abstract Acaricidal activity of Boenninghausenia sessilicarpa against Panonychus citri was tested in the laboratory. Four solvents were used to prepare crude extracts, petroleum ether, chloroform, ethyl acetate, and ethanol, among which ethanol was the most effective one. The results suggested that ethanol extracts of B.
Hui-zhi YANG, Jun-hua HU, Qing LI, Hong-jun LI, Hao-qiang LIU, Ting-shan YAO, Chun RAN, Hui-de LEI   +7 more
openaire   +1 more source

ACTIVE INGREDIENT COMBINATIONS HAVING INSECTICIDAL AND ACARICIDAL PROPERTIES

2001
The invention relates to insecticide and acaricide mixtures containing certain cyclic ketoenols and agonists or antagonists of nicotinergic acetylcholine receptors in order to protect plants from attack by pests.
BAYER AG, FISCHER REINER, ERDELEN CHRISTOPH   +2 more
openaire   +2 more sources