Biocontrol
Mostrando 37-48 de 260 artigos, teses e dissertações.
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37. Supression of seed borne Cladosporium herbarum on common bean seed by Trichoderma harzianum and promotion of seedling development
Trichoderma harzianum isolates have been broadly used for biocontrol of plant diseases caused by fungi. Cladosporium herbarum is a common saprophyte and seed borne fungus, which is easy to manipulate under controlled conditions. It was chosen as a model to test the effectivity of seed treatments with T. harzianum. Common bean seeds (cv. Pérola) contaminated
Trop. plant pathol.. Publicado em: 2014-10
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38. Observations on the gall rust fungus Prospodium transformans, a potential biocontrol agent of Tecoma stans var. stans (Bignoniaceae) in South Africa
Tecoma stans var. stans, a tree originating from the Americas, is emerging as an invasive weed in South Africa. A microcyclic gall inducing rust fungus, Prospodium transformans, has been investigated as a biological control agent against this plant. Development of germinating teliospores and symptoms on host plants are described, and the optimum temperature
Trop. plant pathol.. Publicado em: 2014-08
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39. Introducing the term 'Biocontrol Plants' for integrated pest management
Studies of interactions between crops, additional plants, pests and beneficial organisms already exist as well as studies of natural enemy preference, dispersal, and abundance. However, these studies focus on tri-trophic interactions from an "arthropod" point of view. We think that in order to optimize crop protection methods we need to understand the effect
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
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40. Characterization of Rhizobacteria from field grown Genetically Modified (GM) and non-GM maizes
This study was done to examine the rhizobacteria from field grown Genetically Modified (GM) maize and its non-GM counterpart. Rhizospheric soil samples were collected at 30 days after sowing (DAS) and at post-harvest from two experimental fields in Gauteng, South Africa. Total rhizobacteria (cfu/g) in GM and non-GM soil samples was not significantly differen
Braz. arch. biol. technol.. Publicado em: 2014-02
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41. Application of microorganisms, alone or in combination, to control postbloom fruit drop in citrus
Isolates of Trichoderma spp. (ACB-14, ACB-33, ACB-37, and ACB-40) and Bacillus subtilis (ACB-66, ACB-69, ACB-77, and ACB-83) were tested separately or in mixtures for suppression of postbloom fruit drop in citrus, caused by Colletotrichum acutatum. This work aimed at: (i) determining the incubation time and temperature for production of cells of biocontrol a
Trop. plant pathol.. Publicado em: 2013-12
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42. Role of killer factors in the inhibitory activity of bio-control yeasts against Penicillium expansum and Aspergillus ochraceus
This work evaluated the antagonism of killer positive yeast strains (isolated from 11 samples of different frozen fruit pulps) against the strains of Penicillium expansum and Aspergillus ochraceus. Of the total 41 killer yeasts tested in YM agar, 19 showed antibiosis against P. expansum and A. ochraceus, with inhibition zone ranging from 10 to 18 mm and 10 t
Braz. arch. biol. technol.. Publicado em: 2013-08
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43. Compatibility of conventional agrochemicals used in rice crops with the entomopathogenic fungus Metarhizium anisopliae
The toxicological impact of chemical pesticides on fungal entomopathogens and their use in tank-mixing can be directly measured through in vitro compatibility tests. This study reports the in vitro toxicity of eight insecticides, four fungicides and five herbicides in the conidial germination, vegetative growth and conidiation of Metarhizium anisopliae (stra
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-06
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44. Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt
This study was conducted to assess the biocontrol efficacy of Bacillus subtilis (strain 4812) and Bacillus methylotrophicus (strain H8) individually or in combination with two plant defense inducers including Acetyl salicylic acid (ASA) and DL-Beta-aminobutyric acid (BABA) against tomato wilt caused by Ralstonia solanacearum. The pathogen was significantly i
Trop. plant pathol.. Publicado em: 2013-04
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45. Aspectos da ecologia trÃfica e distribuiÃÃo vertical de uma populaÃÃo de Dendropsophus gr. Microcephalus (Anura, Hylidae) em uma area de mata de tabuleiro litorÃneo do Nordeste brasileiro. / Aspects of trophic ecology and microhabitat use (vertical distribution) of a population of Dendropsophus gr. microcephalus (Anura, Hylidae) in a forest area of the coastal tableland Brazilian Northeast
In this work, it was studied the diet and vertical stratification in D. gr. microcephalus in an area of coastal tableland of northeastern Brazil. Regarding diet, it was identified the main food items, the occurrence of sexual, ontogenetic and seasonal variation in relation to the consumed prey, as well as the ratio of length and volume of these with the snou
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2012
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46. Bactérias endofíticas e epifíticas cultivadas e não cultivadas do guaranazeiro e o controle da antracnose / Endophytic and epiphytic bacteria cultivated and uncultivated of guarana and control of anthracnose
O guaraná, Paullinia cupana var. sorbilis, espécie nativa do Brasil é uma cultura de relevância para o país, principalmente nos estados da Bahia e Amazonas. O fruto contém substâncias estimulantes, como a cafeína, que conferem ao guaraná um grande potencial exploratório, visto que esta é uma das substâncias estimulantes mais consumidas no mundo.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/07/2012
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47. Capacidade nematicida de Bacillus spp. sobre larvas de Haemonchus contortus / Capacidade nematicida de Bacillus spp. sobre larvas Haemonchus contortus
As parasitoses que acometem ovinos são a maior fonte de prejuízos na pecuária. Devido aos tratamentos inadequados dessa enfermidade, os parasitos não se mostram mais suscetíveis aos princípios ativos químicos atuais. Para que ocorram progressos na pecuária ovina, há a necessidade de buscar alternativas que visem reduzir a dependência do sucesso da
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/05/2012
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48. Production of peptide antibiotics by Bacillus sp: GU 057 indigenously isolated from saline soil
A total of 112 soil samples were taken from differents areas of district D.I.Khan and Kohat (KPK) Pakistan and screened for production of antibiotics against the Micrococcus luteus and Staphylococcus aureus. Widest zone of inhibition (18mm) was produced by microorganism isolated from saline soil. The strain was later identified as Bacillus GU057 by standard
Braz. J. Microbiol.. Publicado em: 2012-12