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Caracterização de compostos e de materiais orgânicos para a formulação de subst...
Cunha-Queda, C.; Morais, M.C.; Ribeiro, H.M.; Almeida, M.H.Present work aimed the physic-chemical and biological characterization of products obtained from composting of several organic wastes: sewage sludge produced at wastewater treatment plants (WWTP), organic fraction of municipal solid waste (MSW) and, green waste from parks and gardens. A commercial substrate used at nursery plants was also characterized. The compost that presented minor potentiality to be used o...
Carbon and nitrogen mineralization of organic wastes from sugarcane distillerie...
Vasconcelos, E.; Cabral, F.; Pita, V.; Fangueiro, D.; Ribeiro, H.M.RAMIRAN International Conference ; In Madeira Island (Portugal) significant amounts of wastes are generated in sugarcane distilleries, namely vinasse (the remaining fermented must after distillation) and yeast waste (the yeast surplus produced during the alcoholic fermentation). These wastes have high organic loads and low pH, leading to serious environmental problems when released directly into natural waterc...
Avaliação do estado nutricional azotado de pés-mãe de Eucalyptus globulus Labil...
Vasconcelos, E.; Ribeiro, H.M.; Ramos, A.; Coutinho, J.With the aim of evaluating the use of the portable chlorophyll meter “MinoltaSPAD 502” readings (SPAD readings) as an indicator of the nitrogen status of Eucalyptus globulus Labill. ssp. globulus (E. globulus) mother plants, a nitrogen fertilization experiment with this species was performed. Mother plants of two clones (HD 161 and CN5) of E. globulus were grown in an open-air nursery, in 12 L pots. Plants rece...
A fertilização azotada de pés-mãe de Eucalyptus globulus Labill.: efeito no cre...
Vasconcelos, E.; Ribeiro, H.M.; Ramos, A.; Coutinho, J.To asses the effect of N fertilization on the growth of E. globulus stock plants, a nitrogen fertilization experiment was performed. During 3 years, stock plants of 2 clones (HD161 and CN5) were fertilized with complete nutrient solutions containing 5 different levels of N (50, 100, 200, 400 and 800 mg N L-1). Total biomass, leafbiomass, leaf area and number of shoots produced during the 3 years period were mea...
Use of pulp mill inorganic wastes as alternative liming materials
Cabral, F.; Ribeiro, H.M.; Hilário, L.; Machado, L.; Vasconcelos, E.A laboratory aerobic incubation study was performed during 18 weeks under controlled conditions to assess the effects of applying different doses of pulp mill inorganic wastes on the physical–chemical properties of an acid Dystric Cambissol. Three different inorganic wastes were tested – wood ash, dregs and grits, and an agriculture limestone was used as reference. Results showed that increasing the dose applie...
O comportamento de pés-mãe de Eucalyptus globulus Labill. sujeitos a diferentes...
Vasconcelos, Ernesto; Ribeiro, H.M.; Ramos, A.; Coutinho, J.In Portugal the traditional propagation of Eucalyptus globulus Labill (E. globulus) by seed is being replaced by vegetative propagation by stem cuttings. However, for E. globulus, there is no sufficient information related to the management of mother plant fertilization. So, it is important to study the relationship between the fertilization of the mother plant and the rooting ability of the cuttings. With the ...
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