Inocula??o de sementes com a estirpe 245 de Azospirillum:uma contribui??o para o sistema de produ??o org?nico de mudas e flores de statice (Limonium sinuatom)

• Autor(a) principal: Aguiar, Jo?o Paulo de Lima
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
• Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/1478
• topic: statice.; floriculture; inoculation; Azospirillum; FBN; floricultura; inocula??o; Agronomia

This work was carried out in Area Horticulture, Crop Science Department of Agronomy Institute of the Universidade Federal Rural do Rio de Janeiro. It was divided in to two stages, on initially in germination greenhouses and the second stage was performed in a protected environment. Statice seeds were inoculated with freeze-dried peat inoculant Azospirillum Sp245 (2,8x109 ufc g-1) as treatment concentration (Az), and compared to the control seeds, with out Azospirillum. In the first step, were seeded 18 polypropylene trays with 50 cells with a volume of 17ml each, with the substrate BIOMIX? seedlings. The following parameters were analyzed: percentage of germination (%Germ), root volume (RV), total length (CTT.), length of aerial parts (CPA), total of fresh material (MFT), total of dry material (MST), and length of roots (CR.).This step was planned in a completely randomized design. In the second stage, seeds were inoculated and sown in a protected environment, at the same time of the beginning of the first stage. They were divided into two plots of 20 m long with six blocks in each bed. Each treatment contained 21 plants. In the interval of 21 days, the plants were fertilized with ?torta de mamona? and ?Bokashi?, alternately with an average of 15 days between the applications. The parameters selected for evaluation were as follows: number of leaves(NF), root length (CR), shoot length (CPA), fresh matter of roots(MFR.), dry matter of root(MSR), root length(CR), root volume (RV), fresh matter of the aerial parts (MFPA), dry matter or aerial parts (MSPA), and rate between aerial part and roots(MSPA/MSR). The experiment began on August 15th2015andfinishedon November 28th2015. The first step lasted 42 days and the second step 63days, in a total of 105days. In the first step, the use of Azospirillum has influenced on all parameters. In the second step, the parameters: number of leaves, shoot/root ratio, fresh weigh to roots, dry wheight and root, and root volume were positively influenced by the treatment. We can cite three possible causes to explain why the other analyzes were not significant. The lack of water in certain periods; high temperature or heat stroke in plant closure period may have aborted the flower stalks; and competition with existing weeds in place, especially Cyperaceaae. The use Azospirillum Sp245 as inoculants proved to be avaliable alternative in the cultivation of statice (Limonium sinuatum) as a cut flower