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Title: Agri-Food Waste as a Method for Weed Control and Soil Amendment in Crops
Authors: Lorenzo, Paula 
Goncalves, Jose Guilherme Rosa 
Barbosa, Sara
Ferreira, António J. D. 
Galhano, Cristina 
Keywords: bioherbicides; corn cobs; organic manures; spent coffee grounds; Vicia faba pods
Issue Date: 2022
Project: FCT/MEC and ERDF, within the PT2020 Partnership Agreement, and COMPETE 2020, grant number UID/BIA/04004/2019 and FCT-UIDB/681/2020 
FCT - grant SFRH/BPD/88504/2012 
FCT - contract IT057-18-7248 
Serial title, monograph or event: Agronomy
Volume: 12
Issue: 5
Abstract: The continued and extensive use of synthetic herbicides to control weeds to maximize crop yield is no longer sustainable, as it results in negative impacts on the environment and human health. Innovative sustainable and resilient food production systems should preserve resources and environmental health by incorporating alternative natural herbicides, recycling waste, and favoring a circular economy. The present work assesses the value of different organic waste (Urtica dioica residues, Vicia faba pods, spent coffee grounds, and corn cobs) as bioherbicides and fertilizers in different seasons through pot and field two-year sequential experiments. Pot assays revealed that V. faba pods, spent coffee grounds, and corn cob waste showed the best inhibitory effect, which were subsequently evaluated in the Spring–Summer and Autumn crops. In the field, spent coffee grounds reduced the biomass of total naturally-emerged weeds and stimulated crop growth under scarce rainfall and warm days. However, its effect varied under different environmental conditions. Spent coffee grounds can partially control weeds in the field, which valorizes them as a bioherbicide and boosts sustainable agriculture.
ISSN: 2073-4395
DOI: 10.3390/agronomy12051184
Rights: openAccess
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais

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