8 documents found, page 1 of 1
Importância ecológica e ambiental das minhocas
Steffen, Gerusa Pauli Kist; Antoniolli, Zaida Inês; Steffen, Ricardo Bemfica; Jacques, Rodrigo Josemar SeminotiAs minhocas correspondem a um dos principais grupos de organismos edáficos atuantes nos processos de movimentação de partículas e ciclagem de nutrientes. Este trabalho tem como objetivos discutir a importância das minhocas para a melhoria e manutenção da sustentabilidade dos agroecossistemas, salientando as formas de avaliação da comunidade de minhocas no solo e sua utilização como ferramenta em avaliações amb...
Caracterização, controle alternativo e reprodução de Meloidogyne graminicola em...
Steffen, Ricardo BemficaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; The rice is one of the cereals more cultivated in the world, however its production can be limited by several plant pathogenics agents, among them the rootknot nematode (Meloidogyne spp.). The present work was accomplished in three stages. In the first, twenty and one populations of root-knot nematode of eight districts of the central area of Rio Gran...
Essential oil of Eucalyptus grandis effect on the growth of ectomycorrhizal iso...
Steffen, Ricardo Bemfica; Antoniolli, Zaida Inês; Steffen, Gerusa Pauli Kist; Jacques, Rodrigo Josemar Seminoti; Echkardt, Daniel PazziniThe bioactive secondary metabolites of some plants are capable of stimulating the growth of ectomycorrhizal fungi. Combined with plants, these fungi provide the same conditions to grow in environments contaminated by heavy metals. We evaluated the effect of adding essential oil of Eucalyptus grandis in the growth of ectomycorrhizal isolates in the presence of copper, zinc and nickel. The ectomycorrhizal Pisolit...
Essential oil influence in mycorrhizal colonization and growth seedlings of euc...
Steffen, Ricardo Bemfica; Antoniolli, Zaida Inês; Steffen, Gerusa Pauli Kist; Jacques, Rodrigo Josemar Seminoti; Echkardt, Daniel PazziniThe establishment of exotic forest species in Brazil may show dependence to ectomycorrhizal association, which increases the resistance of seedlings to stress after the initial planting in the field, favoring the maintenance of harshseedlings under adverse conditions. The study aimed to evaluate the effect of applying the eucalyptus essential oil in ectomycorrhizal colonization on growth of Eucalyptus gran...
Use of vermicompost as a substrate for the production of Eucalyptus grandis and...
Steffen, Gerusa Pauli Kist; Antoniolli, Zaida Inês; Steffen, Ricardo Bemfica; Schiedeck, GustavoThe aim of this work was to evaluate the vermicompost efficiency in the seedlings of two eucalyptus species production. The experiment was developed in greenhouse conditions, substrate constituted by different vermicompost proportions and peat for the E. grandis and C. citriodora seedling production. The experimental design was entirely casualized with seven treatments and eight repetitions. After 100 days of e...
Eucalyptus essential oil action on mycorrhizal colonization and the establishme...
Steffen, Ricardo Bemfica; Antoniolli, Zaida Inês; Steffen, Gerusa Pauli Kist; Jacques, Rodrigo Josemar Seminoti; da Silva, Rodrigo FerreiraThe use of eucalyptus essential oil can optimize the growth of ectomycorrhizal isolates, which aid the establishment of forest species in soils contaminated by copper. The study aimed to determine the best application of eucalyptus essential oil in the formation of mycorrhizal seedlings of Eucalyptus grandis and its influence on the establishment of these seedlings in soil contaminated by copper. It was used th...
Stimulatory effect of eucalyptus essential oil on the germination and early gro...
Steffen, Ricardo Bemfica; Antoniolli, Zaida Inês; Steffen, Gerusa Pauli KistThe use of essential oil and extracts from plants is becoming an efficient alternative in the biostimulation on growth and protection of plants. The aim of this work was to evaluate the use of leaf essential oil of Eucalyptus grandis on the germination and the development of Eucalyptus grandis seedlings in nursery conditions. The eucalyptus seeds were exposed to the concentrations of 0, 10, 25, 50, 75 and 100 ...
Óleo essencial de eucalipto como bioestimulador da micorrização e do estabeleci...
Steffen, Ricardo BemficaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Ectomycorrhizal fungi (fECM) combined with the plant root system improve the absorption of water and nutrients, providing great plant growth, especially in environments with nutritional deficiency or degraded. Due to the fECM and plants live in mutualistic association, allows the fungal symbionts to be benefit, or at least tolerate, the secondary meta...