Avaliação de substratos orgânicos na produção de mudas de acácia negra (Acacia mearnsii de Wild).

• Autor(a) principal: Villela, Alexandre Terracciano
• Data de Publicação: 2007
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFPel - Guaiaca
• Texto Completo: http://repositorio.ufpel.edu.br/handle/ri/1158
• topic: Acacia mearnsii de Wild.; Resíduos agroindustriais; Produção de mudas; Acacia mearnsii of Wild.; Agro-industrial residues; Seedlings production; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

The present work had as objective to evaluate the production of seedlings of black wattle (Acacia mearnsii of Wild), in substrata gotten from agro-industrial residues, composted and vermicomposted. After the search and the acquisition of the different residues used in the work, it was proceeded the disposal from these isolated materials and in not aromatical combination in boxes wooden (cedrinho) in order to carry through the composting process later and the vermcomposting. After the vermicomposting to be concluded preceded it mixture from the materials including itself it carbonized rind of rice (CAC). The treatments were: T1 (bovine manure (EB) 50%+ rind of parboilizado rice (CAC) 50%); T2 (ovine manure (EO) 50%+CAC 50%); T3 (agroindustrial residues (FROG) 50%+CAC 50%); T4 (mud of parborizado rice (LP) 50%+CAC 50%); T5 (bovine manure(EB) 25%+LP 25%+CAC 50%); T6 (EO 25%+LP 25%+CAC 50%); T7 (EB 25%+RA 25%+CAC 50%; T8- EO 25%+RA 25%+CAC 50%); T9 (EB 25%+RF 25%+CAC 50%); T10 (EO 25%+RF 25%+CAC 50%) and T11 (Plantmax®). The evaluated variable had been: number of plants, col diameter, height of plants, aboveground biomass (wet and dry), root fitomass (wet and dry), total foliar area, chemistry composition od seedlings and chemistry composition of the substrata before and after the research. The sowing occurred in rigid the first day of June of 2006 in tubetes (1320 units) with capacity conditioning 50 approximately cm3 of substratum. The seeds was concluded the germinative process in day 25 of the same month. When the changes had reached the height of two centimeters, proceded the looping, leaving itselves only one seedlings one for container. During the experiment the changes had been irrigated with the frequency of 6L m-2 day-1, until the 45 days of the plantation. From the 46 days 12L was changed for two irrigations totalizing m-2 day-1, due to rise of the local temperature remaining this frequency until the end of the evaluations in greenhouse. To the twenty and three days of the month of September of 2006 (115 days to count of the sowing), the ending of the evaluations in greenhouse was given and all the changes had been removed and directed to the laboratory to be carried through the too much evaluations. The gotten results had been submitted to the variance analysis, test of averages (Tukey 5%), where it was possible to evidence that the T11 treatment with commercial substratum Plantmax®, presented the best answers for seedlings of black wattle (acácia mearnsii of Wild).