Effect of the wastes from the coffee bean processing on alternative substrates in the Dickson Quality Index of Eucalyptus “urograndis”

Abstract

The objective of this study was to evaluate the effect of wastes from the coffee bean processing
on substrates composed by vermiculite, coconut fiber and rice straw in the Dickson Quality
Index (IQD) of Eucalyptus “urograndis” (Eucalyptus urophylla x Eucalyptus grandis) seedlings.
The experiment was carried out in a completely randomized design with 5 treatments and
6 replicates, with T0: 0% moinha (MO) + 28% carbonized rice husk (CAC) + 36% vermiculite
(V) + 36% coconut fiber 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. At 85 days after planting, the Dickson Quality Index (IQD) was evaluated.
Concentrations of up to 28% of the moinha may be used in the composition of the alternative
substrate in substitution of the rice straw in the production of seedlings, when compared to the
conventional treatment.