Agricultural wastes as alternative substrate in the production of beetroot seedlings

Abstract

The objective of this research was to evaluate the effect of increasing concentrations of wastes
from the drying of coffee beans (moinha) on substrates composed of coconut fiber and carbonized
rice hull as beetroot seedlings. The experiment was carried out in a completely randomized
design,with seven treatments and ten replicates: T1: commercial substrate (control); T2:
10% moinha (MO) + 20% rice husk (CA) + 20% coconut fiber (FC) + 50% commercial substrate
(SC); T3: 20% MO + 20% CA + 20% FC + 40% SC; T4: 30% MO + 20% CAC + 20% FC +
30% SC; T5: 40% MO + 20% CAC + 20% FC + 20% SC; T6: 50% MO + 20% CA + 20% FC +
10% SC; T7: 60% MO + 20% CA + 20% FC + 0% SC. The variables evaluated were:seedling
height, stem diameter,dry matter roots and aboveground part. Proportions of up to 60% of the
moinhamay be incorporated in a substrate composed of 20% rice husk and 20% coconut fiber
in substitution of the commercial substrate, without any loss in the growth variables of beetroot
seedlings.. However, the substrate containing50% of the moinha + 20% coconut fiber + 20%
rice husk + 10% commercial substrate has the highest values of plant height,stem diameter;
roots and aboveground part dry matter in the beetroot seedlings.The objective of this research was to evaluate the effect of increasing concentrations of wastes
from the drying of coffee beans (moinha) on substrates composed of coconut fiber and carbonized
rice hull as beetroot seedlings. The experiment was carried out in a completely randomized
design,with seven treatments and ten replicates: T1: commercial substrate (control); T2:
10% moinha (MO) + 20% rice husk (CA) + 20% coconut fiber (FC) + 50% commercial substrate
(SC); T3: 20% MO + 20% CA + 20% FC + 40% SC; T4: 30% MO + 20% CAC + 20% FC +
30% SC; T5: 40% MO + 20% CAC + 20% FC + 20% SC; T6: 50% MO + 20% CA + 20% FC +
10% SC; T7: 60% MO + 20% CA + 20% FC + 0% SC. The variables evaluated were:seedling
height, stem diameter,dry matter roots and aboveground part. Proportions of up to 60% of the
moinhamay be incorporated in a substrate composed of 20% rice husk and 20% coconut fiber
in substitution of the commercial substrate, without any loss in the growth variables of beetroot
seedlings.. However, the substrate containing50% of the moinha + 20% coconut fiber + 20%
rice husk + 10% commercial substrate has the highest values of plant height,stem diameter;
roots and aboveground part dry matter in the beetroot seedlings.