Wastes from coffee grain processing in alternative substrate composition for eucalyptus seedling production

Abstract

The objective this research was evaluate the effect of wastes from the coffee bean processing
(moinha) in substrates composed of vermiculite, coconut fiber and carbonized rice straw
in the development of Eucalyptus “urograndis” seedlings. The experiment was conducted in
a completely randomized design with 5 treatments, and 6 repetitions, being T0: 0% moinha
(MO)+28% casca de arroz carbonizada (CAC)+36% vermiculita (V)+36% fibra de coco (FC);
T1: 7% MO+21% CAC+36% V+36% FC; T2: 14% MO+14% PAC+36% V+36% FC; T3: 21%
MO+7% CAC+36% V+36% FC; T4: 28% MO+0% PAC+36% V+36% FC. Plant height and dry
matter of roots and shoot were evaluated. The “moinha” can be used in the composition of
alternative substrate at a concentration of up to 28% instead of rice straw in the production of
seedlings when compared to the conventional treatment, however, a concentration of up to
20% in substrate composition has better quality seedlings eucalyptus.