Encontrados 12 documentos, a visualizar página 1 de 2
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...
Weight is a key factor in the physiological quality of Parapiptadenia rigida seeds
Saldanha, Cleber Witt; Missio, Evandro Luiz; Steffen, Gerusa Pauli Kist; Maldaner, Joseila; Morais, Rosana Matos deThis study aimed to assess the physiological quality of Parapiptadenia rigida (Benth.) Brenan seed weight classes subjected to accelerated aging under laboratory and greenhouse conditions. A lot of P. rigida seeds was split in three seed weight classes (thousand seed weight): TSW1 (original lot; control, 19.23 g), TSW2 (25.45 g) and TSW3 (13.58 g), which were subjected to three accelerated aging times (0, 24 an...
Seeds of Peltophorum dubium submitted to osmotic conditioning increases germina...
Missio, Evandro Luiz; Nunes, Ubirajara Russi; Saldanha, Cleber Witt; Maldaner, Joseila; Steffen, Gerusa Pauli Kist; Morais, Rosana Matos dePeltophorum dubium (Spreng.) Taub. is a Brazilian native forest species that is used in programs of environmental restoration, landscaping and civil construction. It is a seed-propagated plant, but the low physiological quality of the seeds associated with biotic and abiotic stresses can reduce the percentages of germination and emergence. Techniques that allow the expression of the physiological potential of t...
Vermicompost in substrate composition for seedlings production of Schinus tereb...
De Franceschi, Émerson; saldanha, Cleber Witt; Missio, Evandro Luiz; Steffen, Gerusa Pauli Kist; Maldaner, Joseila; Morais, Rosana Matos deThe objective of the present study was to analyze the effect of addition of vermicompost to the substrate of Schinus terebinthifolius seedlings. We tested five treatments composed by the addition of vermicompost on Carolina Soil® substrate (T1: 100% Carolina Soil® (CS); T2: 75% CS and 25% vermicompost (VC); T3: 50% CS and 50% CV; T4: 25% CS and 75% CV and T5: 100% CV). The morphophysiological characteristics ev...
Growth promoters in propagation of caroba
Amaral, Patrícia Pinheiro; Steffen, Gerusa Pauli Kist; Maldaner, Joseila; Missio, Evandro Luiz; Saldanha, Cleber WittThe use of organic inputs, which are able of promoting plant growth, is an alternative to anticipate forest seedlings trading in nursery garden. Caroba (Jacaranda micrantha) is a native forest species from the southern of Brazil, which presents several potential uses. This study aims to analyze the efficiency of vermicompost and fungal isolates of the genus Trichoderma as growth promoters in J. micrantha seedli...
Casca de arroz e esterco bovino para a multiplicação de minhocas e produção de ...
Steffen, Gerusa Pauli KistConselho Nacional de Desenvolvimento Científico e Tecnológico; The earthworms are organisms of the edaphic fauna with great capacity of transformation of organic residues with stabled composting. The potential of these organisms have the advantage in the earthworm-breeding, seeking the humus production as organic fertilizer, and earthworm´s biomass, as food for several animals. However, many organic residues ar...
Diversidade de minhocas e sua relação com ecossistemas naturais e alterados no ...
Steffen, Gerusa Pauli KistConselho Nacional de Desenvolvimento Científico e Tecnológico; Knowledge on earthworms diversity in Rio Grande do Sul (RS) State, as well as in Brazil, is lower than the range estimated by taxonomists. The study aimed to: 1) evaluate the diversity of earthworms present in ecosystems of three regions of the RS State; 2) characterize the physical and chemical properties of soil, vegetation and land use; and 3) de...
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...