Gustavo Rabelo Botrel Miranda

Formação de mudas de cafeeiro em substratos oriundos de diferentes métodos de desinfestação

The objective of this work was to evaluate the development of coffee seedlings grown in bag mixture disinfested by different methods. The work was carried out in a high cover coffee nursery at Federal University of Lavras, State of Minas Gerais, Brazil, in May/2004. The bag mixture was prepared using soil from a 20 years old coffee field. Thirteen disinfestations methods were used in bag mixture. The cultivar paraiso H 419-1 was used in all treatments. The growth was evaluated when the plants had five pairs of mature leaves. The following parameters were analyzed: height (cm), girth diameter (mm), root and shoot dry weight (g), number of orthotropic nodes, and total leaf area (cm2). It was concluded that methyl bromide promoted the best coffee seedlings development. The use of the solar collector was also considered promising for substrate disinfestations in commercial nurseries, as observed for the methyl bromide.