Aqueous leachates and a CHCl3-MeOH (1:1) extract of roots of Stauranthus perforatus showed a significant phytotoxic effect on Amaranthus hypochondriacus and Echinochloa crus-galli. Bioassay-directed fractionation of the active organic extract led to the isolation and characterization of ten secondary metabolites, which included two pyranocoumarins [xanthyletin (1) and 3-(1',1'-dimethylallyl)-xa...

Echinochloa spp. are the most important weeds in rice fields. In this research Fusarium equiseti and Colletotrichum graminicola were isolated from these weeds and then their pathogenicity effects were compared on these weeds and five rice cultivars in a completely random design with three replications in greenhouse conditions. Fungi were inoculated on weeds and rice cultivars using a spore susp...

Metasequoia glyptostroboides Hu et W.C. Cheng, known as a living fossil species, is planted in parks, gardens, and streets many temperate regions worldwide. Adequate branch pruning necessary to grow the plants these locations, generates large amount of waste. In this study, allelopathic activity pruned-branch waste was investigated search for beneficial applications The leaves M. obtained from ...

an isolated fusarium anthophilum (a. braun) wollenweber (isolate 16c) has been considered as a candidate for microbial control of barnyard grass [echinochloa crus-galli (l.) p. beauv]. the effects of nutrition on conidiation, germination rate and germ-tube elongation of conidia of the fungus were evaluated. conidia yield, conidial germination and conidial germ-tube elongation of the fungus grow...

A 73-year-old woman had progressive apathy, forgetfulness, and gait disturbance for 6 months. Neurologic examination showed inattentiveness, memory impairment, and broad-based gait. Noncontrast MRI was performed due to gadolinium allergy. MRI and contrast-enhanced CT scan revealed symmetric bilateral frontal cysts (figure 1A) and an anterior skull base nodule (figure 1, B and C). Surgery confir...

The aim of the study was to determine the prevalence and intensity of parasitic gastrointestinal infections in free-range chickens from the West Pomerania province. Experimental material for the study was taken from 10 farms. Breeds raised in farms participating in the study included miniature chickens called Polish Lilliputians and Green- legged Partridge. A total of 104 samples of faeces were...

Tucci E.C., Soares N.M., Faccini J.L.H. & Vilas Boas D. 2014. Additional information about an outbreak by Allopsoroptoides galli (Acari: Psoroptoididae) in commercial laying hens in the state of São Paulo, Brazil. Pesquisa Veterinária Brasileira 34(8):760-762. Laboratório de Parasitologia, Instituto Biológico, Av. Conselheiro Rodrigues Alves 1252, São Paulo, SP 04014-002, Brazil. E-mail: tucci@...

Research on allelopathic interactions can be useful in the search for phytotoxins produced by plants that may be employed as natural herbicides. The aim of this study was to assess the phytotoxic action of aqueous leaf extract of Blepharocalyx salicifolius, Myrcia multiflora, Myrcia splendens and Myrcia tomentosa on the germination and development of three weeds. The working hypothesis was that...