Banca de DEFESA: PRISCILLA RODRIGUES RUELLA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : PRISCILLA RODRIGUES RUELLA
DATE: 12/11/2021
TIME: 10:00
LOCAL: Videoconferencia pela RNP
TITLE:

Production of organic vegetable seedlings and micro-greens with substrates formulated with composto of  banana peel

KEY WORDS:

Agro-industrial waste; grass pruning; effective microorganisms; microgreens.

PAGES: 58
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SPECIALTY: Fertilidade do Solo e Adubação
SUMMARY:

The reuse of industrial organic waste for agricultural purposes has been arousing interest both for reducing environmental impacts and for the production of agricultural inputs, generating economic, social and environmental benefits, and the composting process is a low-cost alternative to carry out its processing. Banana is one of the main fruits produced and consumed in Brazil, and its industrialization results in the generation of large amounts of waste. However, banana peel is a material that has high humidity and a pasty texture, and for composting it is necessary to mix it with some material with a coarser texture. Thus, the objective of this research was to evaluate the feasibility of producing substrates from the composting of waste generated in a banana agroindustry, using banana peel and grass pruning residue. Initially, a composting experiment was carried out to evaluate different proportions of the mixture of banana peel and grass pruning, in addition to the inoculation of the compost. Aiming at obtaining efficient substrates for the production of seedlings of three organic vegetables and for the production of two species of microgreens, experiments were carried out to evaluate the use of different organic compounds, mixed with vermiculite in the proportion of 2:1 (v/v) , having as a control a substrate formulated from earthworm humus and fine charcoal. The pH and electrical conductivity (EC) of the substrates were measured during the development of the vegetable seedlings. All evaluated compost mixtures presented temperatures close to the environment during the 120 days of composting, probably due to the reduced size of the windrows. It was found that during the development of the seedlings, the pH of the substrates remained with values close to neutrality or slightly alkaline, between 6.6 and 8.8. There was also an expressive reduction in EC of all substrate formulations at 7 days after sowing and remaining at values below 150 µS cm-1, probably due to excessive irrigation. Substrates formulated with compost consisting of 50% or 75% banana peel showed equal or superior performance to the control substrate on the development of lettuce, beetroot and tomato seedlings, and for the production of micro-greens of lettuce and mustard. The substrate formulated with compost inoculated with EM (effective microorganisms) showed generally equal or inferior performance compared to the other substrates evaluated. It was found that it is possible to obtain efficient organic substrates for the production of vegetable and microgreen seedlings, consisting of vermiculite and composed of a mixture of banana peel and grass pruning.

BANKING MEMBERS:
Presidente - 991.790.757-20 - MARCO ANTONIO DE ALMEIDA LEAL - EMBRAPA
Interno - 785.371.857-87 - JOSÉ GUILHERME MARINHO GUERRA - EMBRAPA
Externo à Instituição - CARLOS DAVID IDE - PESAGRO-RIO