Results 51 to 60 of about 14,808 (257)

Mosquito Abundance, Bed net Coverage and Other Factors Associated with Variations in Sporozoite Infectivity Rates in Four Villages of Rural Tanzania. [PDF]

open access: yes, 2008
Entomological surveys are of great importance in decision-making processes regarding malaria control strategies because they help to identify associations between vector abundance both species-specific ecology and disease intervention factors associated ...
A Mahande   +55 more
core   +4 more sources

Notas sobre Tanacetum corymbosum s. l. (Asteraceae)

open access: yesCollectanea Botanica, 2018
Se presenta un estudio nomenclatural y taxonómico sobre Chrysanthemum italicum L., C. achilleae L., C. tanacetifolium Pourr., Pyrethrum cinereum Griseb., P. clusii Fisch. ex Rchb., P. clusii Tausch, P. daucifolium Pers. y P. tenuifolium Ten., táxones que
D. Iamonico
doaj   +1 more source

Effects of biological insecticides NeemAzal T/S and Pyrethrum FS EC and their interaction with organic products in treatments of pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae) on Pisum sativum (L.) [PDF]

open access: yesPesticidi i Fitomedicina, 2014
The efficacy and effects of two biological insecticides, NeemAzal T/S® and Pyrethrum FS EC, applied individually and in combination with Polyversum (a biological growth regulator and fungicide) and Biofa (an organic foliar fertilizer), in controlling ...
Ivelina Nikolova, Natalia Georgieva
doaj   +1 more source

Spanish chamomile (Anacyclus pyrethrum) and pyrethrum (Tanacetum cineraiifolium): organic and natural pesticides and treasure of medicinal herbs

open access: yesNotulae Scientia Biologicae, 2021
Pyrethrum (Tanacetum cineraiifolium) which is a natural insecticide has many properties, but the most important are raid action, very low toxicity for mammalian, lack of insect immunity, broad of activity, lack of persistence and degraded quickly by UV ...
Mohamad H. SHAHRAJABIAN   +2 more
doaj   +1 more source

Ants obtained from trees of a "Jacareuba" (Calophyllum brasiliense) forest plantation in Central Amazonia by canopy fogging: first results [PDF]

open access: yesActa Amazonica, 1998
Canopies of the locally occurring Amazonian tree species Calophyllum brasiliense. Camb. (Guttiferae, height 10 m) were fogged after dawn on the same day at five adjacent localities in a 20-year-old plantation at the Adolpho Ducke Forest Reserve near ...
Ana Yoshi HARADA, Joachim ADIS
doaj   +1 more source

Botanical and microbial insecticides application in aquaponics - is there a risk for biofilter bacteria and fish?

open access: yesFrontiers in Marine Science, 2022
Aquaponics is a food production system that combines aquaculture with hydroponics. The simultaneous existence of fish, beneficial bacteria and plants in the same water loop predisposes the fish and bacteria to a possible detrimental effect of plant ...
Božidar Rašković   +9 more
doaj   +1 more source

Pyrethrum flowers and pyrethroid insecticides. [PDF]

open access: yesEnvironmental Health Perspectives, 1980
The natural pyrethrins from the daisy-like flower, Tanacetum or Chrysanthemum cinerariifolium, are nonpersistent insecticides of low toxicity to mammals. Synthetic analogs or pyrethroids, evolved from the natural compounds by successive isosteric modifications, are more potent and stable and are the newest important class of crop protection chemicals ...
openaire   +4 more sources

Pyrethrins in Tanacetum cinerariifolium: biosynthesis, regulation, and agricultural application

open access: yesOrnamental Plant Research
Pyrethrum (Tanacetum cinerariifolium), a perennial herb within the Tanacetum genus, stands as a crucial source of natural insecticides pyrethrins which have been utilized for centuries.
Tuo Zeng   +8 more
doaj   +1 more source

Tissue culture of Pyrethrum (Tanacetum cinerariifolium) and associated microbial contamination

open access: yesActa Biologica Slovenica, 2010
Microbial contamination was observed on several subcultures of Pyrethrum (Tanacetum cinerariifolium) (Trevir.) Schultz-bip. callus lines. The presence of microorganisms- sms was detected by isolation of contaminants in pure culture from 7 out of ...
Jana Ambrožič Dolinšek   +6 more
doaj   +1 more source

Assessing the presence of Wuchereria bancrofti in vector and human populations from urban communities in Conakry, Guinea [PDF]

open access: yes, 2015
The Global Programme to Eliminate Lymphatic Filariasis was launched in 2000 with the goal of interrupting transmission of lymphatic filariasis (LF) through multiple rounds of mass drug administration (MDA).
Boakye, Daniel A.   +11 more
core   +4 more sources

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