Results 131 to 140 of about 139,903 (289)

UJI TOKSISITAS TERHADAP LARVA Artemia salina LEACH DARI FRAKSI n-HEKSAN, KLOROFORM, ETIL ASETAT DAN AIR EKSTRAK ETANOL RIMPANG TEMU PUTIH ( Curcuma zedoaria (Berg.) Rosc.) [PDF]

, 2002
Dalam upaya mencari senyawa antikanker dari tumbuhan, telah dilakukan uji toksisitas terhadap larva artemia Salina leach.fraksi n-heksan, kloroform, etil asetat dan air dari ekstrak etanol 80% rimpang temu putih (Curcuma zedoaria (Berg.) Rosc ...
Ariana, Dian, Rijanto, Anna, Widorini, Arti Santi, Windono, Tri, Wonohadi, Elisawati   +4 more
core  

Evolving resistance patterns in Tetranychus urticae and Bemisia tabaci in Greece

Pest Management Science, EarlyView.
Greek populations of T. urticae and B. tabaci exhibit evolving multi‐resistance, confirmed by bioassays and molecular markers, highlighting the urgent need for evidence‐based resistance monitoring in IPM. Abstract BACKGROUND Pesticide resistance in agricultural pests remains a major barrier to effective and sustainable crop protection.
Anastasia Kampouraki, Aris Ilias, Kiriaki‐Maria Papapostolou, Styliani Malliaraki, Ioannis Pirgianakis, Evangelia Karakosta, John Vontas, Anastasia Tsagkarakou, Konstantinos Mavridis   +8 more
wiley   +1 more source

Identification of a mutation in the para-sodium channel gene of the cattle tick Rhipicephalus (Boophilus) microplus associated with resistance to synthetic pyrethroid acaricides [PDF]

, 2009
Resistance against synthetic pyrethroid (SP) products for the control of cattle ticks in Australia was detected in the field in 1984, within a very short time of commercial introduction.
Corley, S.W., Jackson, L.A., Jonsson, N.N., Lew-Tabor, A.E., Moolhuijzen, P.M., Morgan, J.A.T.   +5 more
core   +1 more source

Potential of bacteria isolated from chitin‐enriched soil against Euschistus heros (Hemiptera: Pentatomidae)

Pest Management Science, EarlyView.
B. thuringiensis and B. altitudinis, isolated from chitin‐enriched soil, causing mortality in Euchistus heros under laboratory conditions. First report of B. altitudinis in the control of E. heros. Abstract BACKGROUND Biological control using entomopathogenic microorganisms is a more sustainable alternative to chemical pesticides for managing insect ...
Vicente Guilherme Handte, Valéria Ortaça Portela, Nariane de Andrade, Valdemir Bittencourt Soares, Andressa de Souza Pollo, Ricardo Antonio Polanczyk, Rodrigo Josemar Seminoti Jacques   +6 more
wiley   +1 more source

Evaluating the potential of RNA interference for control of striped cucumber beetle, Acalymma vittatum (Fabricius) (Coleoptera: Chrysomelidae)

Pest Management Science, EarlyView.
SCB has a robust RNAi response to injected dsRNA, but oral RNAi is less efficient. Nucleases do not appear to be responsible for the discrepancy, suggesting other factors are involved. Abstract BACKGROUND The striped cucumber beetle (SCB) is a serious pest of cucurbit crops, causing damage both by feeding on plants and by vectoring plant diseases ...
Emine Kaplanoglu, Félix Longpré, Cam Donly   +2 more
wiley   +1 more source

A new method to measure EC50 reveals cultivar‐specific fungicide resistance and very high diversity within experimental field populations of Zymoseptoria tritici

Pest Management Science, EarlyView.
We isolated Zymoseptoria tritici strains from a diverse wheat field and quantified fungicide resistance using a novel plate assay. We found high diversity in fungicide sensitivity and host–fungicide–pathogen interactions. Abstract BACKGROUND Zymoseptoria tritici causes Septoria tritici blotch (STB), the most damaging wheat disease in Europe. In Europe,
Firas Talas, Jessica Stapley, Bruce A McDonald   +2 more
wiley   +1 more source

Bayesian Bioassay Design

The Annals of Statistics, 1983
A Bayesian treatment of the quantal bioassay design problem is given. It is assumed that the potency curve is a Dirichlet random distribution $F$ with parameter $\alpha(t) = MF_0(t)$, and that $n_1, \cdots, n_L$ animals are treated at drug levels $t_1, \cdots, t_L$ respectively.
openaire   +2 more sources

Sensitivity to demethylation‐inhibiting fungicides and induced expression of CYP51 associated with tebuconazole resistance in Alternaria species on mandarin in Brazil

Pest Management Science, EarlyView.
Tebuconazole‐resistant isolates overexpress CYP51 and, when tested at field rates, did not reduce ABS severity, whereas difenoconazole and mefentrifluconazole remained effective. Abstract BACKGROUND Alternaria brown spot (ABS), caused by Alternaria spp., is an important disease affecting mandarin production in several citrus‐growing regions worldwide ...
Thiago de Aguiar Carraro, Yong Luo, Boris X. Camiletti, Themis J. Michailides, Victor Gabri, Geraldo José Silva‐Junior, Lilian Amorim, Louise Larissa May De Mio   +7 more
wiley   +1 more source

Magnitude and Extent of Contaminated Sediment and Toxicity in Chesapeake Bay [PDF]

, 2007
INTRODUCTION: This report summarizes the results of NOAA's sediment toxicity, chemistry, and benthic community studies in the Chesapeake Bay estuary. As part of the National Status and Trends (NS&T) Program, NOAA has conducted studies to determine the
Hameedi, Jawed, Hartwell, S. Ian
core  

SYN‐A, a naturally derived synergist, restores pyrethroid efficacy against cabbage stem flea beetle but negatively impacts its parasitoid Microctonus brassicae

Pest Management Science, EarlyView.
SYN‐A, a naturally derived synergist, inhibited key metabolic pathways associated with pyrethroid insecticide resistance in cabbage stem flea beetle (CSFB) and its parasitoid Microctonus brassicae. SYN‐A restored pyrethroid efficacy against resistant CSFB allowing up to 80% reduction in application rates.
Patricia A. Ortega‐Ramos, Graham D. Moores, Samantha M. Cook   +2 more
wiley   +1 more source