Tratamentos alternativos para conservação de sementes de café arábica

• Autor(a) principal: Ribeiro, Marcelo de Freitas
• Data de Publicação: 2013
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/1205
• topic: Tratamentos alternativos; Sementes; Café arábica; Alternative treatments; Seeds; Coffee arabica; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA

The maintenance of coffee seed quality during the storage is a concern of seeds producers. Researches with alternatives products to the fungicides are scarce. The objective of this work was to evaluate the efficiency of alternative products in the presenvation of physiological and sanitary quality of seeds during the storage. A factorial arrangement, 16 x 3 x 5 was used. Sixteen treatments of seeds were performed with medicinal dehydrated and powdered plants (Rosmarinus officinalis, Ocimum basilicum, Allium sativum, Cinnamomum zeylanicum, Equisetum ssp, Syzygium aromaticum, Pimpinella anisum, Zingiber officinale, Ocimum basilicum), biological products (Trichodermil SP, Trichodel, Trichoplus), chemical alternative controls (potassium sorbate and sodium benzoate), chemical fungicide (mancozebe) and control (without any product). Were used three types of packing: polypropylene flasks, multiwall kraft paper bags and plastic bags. The quality of stored seeds were evaluated at 3, 6, 9, 12 and 15 months. Two independent experiments were carried out, one in natural ambient and another in cold chamber. Was used The cultivar of coffee CatuaiVermelho IAC 44. The seeds of this cultivar, were dried at the sun untl reach 42% of water. In each packing type, were conditioned 200 g of seeds. Interaction among factors was significant. In general, in the best treatments, seeds presented good quality until six months in natural ambient and until 15 months in cold chamber. In both environment, the storaged seeds in kraft paper germinated more than those storaged in plastic bag. These, in turn, germinated more than those storaged in flasks. Rosmarinus officinalis, Allium sativum, and products based on Trichoderma were always higher than the control in maintaining germination and in controlling of fungus. These products were soo efficient as the fungicide mancozebe and, in some situations, higher than this fungicide in keeping seed quality. The results of this work indicate that there are alternative products that are equal or more efficient than fungicide in keeping physiological and sanitary quality of coffee seeds quality.