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Horticultura Brasileira

versão impressa ISSN 0102-0536versão On-line ISSN 1806-9991


KRAUSE, Marcelo R et al. Agricultural wastes used as alternative substrates for the production of tomato seedlings. Hortic. Bras. [online]. 2017, vol.35, n.2, pp.305-310. ISSN 0102-0536.

Studies concerning the use of agricultural wastes are essential considering they can be employed on seedling production, minimizing the risk of environmental contamination due to inappropriate disposal. We evaluated growth variables of tomato seedlings produced on substrates composed by coconut fiber, eggshell and increasing levels of moinha replacing the commercial substrate Bioplant. The experiment was carried out in a completely randomized design, with five treatments and ten replications, treatments being: T0= commercial substrate; T1= 15% moinha (MO: wastes from the coffee seeds drying) + 15% coconut fiber (FC) + 5% eggshell (CO) + 65% commercial substrate (SC); T2= 30% MO + 15% FC + 5% CO + 50% SC; T3= 45% MO + 15% FC + 5% CO + 35% SC; T4= 60% MO + 15% FC + 5% CO + 20% SC. Number of leaves; seedling height, stem diameter; fresh and dry matter of root, aboveground part and of the whole plant were evaluated. The alternative substrate containing 15 to 32% moinha + 15% coconut fiber + 5% eggshell + 48 to 65% commercial substrate provided the highest values for all analyzed variables. All the proportions of moinha in the substrate promoted growth variables values higher than those obtained when using only the commercial substrate. The use of 5% eggshell, 15% coconut fiber, 15 to 32% moinha and 48 to 65% commercial substrate is an alternative substrate for the production of tomato seedlings, this being a suitable destination for the agricultural wastes.

Palavras-chave : Solanum lycopersicum; alternative substrate; moinha; coconut fiber..

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