Biodegradable mulch controls weeds and increases water use efficiency in lettuce crops

ABSTRACT Vegetable cultivation requires high water use and weed control. Soil cover using recycled paper, can be an alternative to polyethylene film to reduce weed incidence, soil temperature and increase water use efficiency beyond reduces costs and environmental pollutions. The objective of this s...

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Veröffentlicht in:Horticultura brasileira 2021-09, Vol.39 (3), p.330-334
Hauptverfasser: Freitas, Agnaldo Roberto de J, Freitas, Francisco Claudio L de, Souza, Caetano Marciano de, Delazari, Fabio T, Berger, Paulo Geraldo, Borges, Fernando José G, Zanuncio, José C
Format: Magazinearticle
Sprache:eng
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Zusammenfassung:ABSTRACT Vegetable cultivation requires high water use and weed control. Soil cover using recycled paper, can be an alternative to polyethylene film to reduce weed incidence, soil temperature and increase water use efficiency beyond reduces costs and environmental pollutions. The objective of this study was to evaluate the use of biodegradable mulch in weed management and water use efficiency (WUE) in lettuce crop. The treatments were composed of brown recycled paper (RP), black polyethylene film (PF) and soil without cover with weed removal (WR) and without weed removal (WW). RP and PF were efficient to control weeds. The soil temperature with RP was 8.2 and 2.1ºC lower than with PF and WR, respectively. The lettuce yield with RP was 14.5 and 28.3% higher than WR, and with PF, respectively. The water volume applied with RP was 26.5% lower, and WUE was 55.6% higher compared to WR. Soil cover with recycled paper controlled weeds, reduced soil temperature and water consumption and increased yield and water use efficiency in lettuce crop. RESUMO O cultivo de hortaliças requer alto consumo de água e controle de plantas daninhas. A cobertura do solo com papel reciclado pode ser uma alternativa biodegradável ao filme de polietileno para reduzir a incidência de plantas daninhas, temperatura do solo e aumentar a eficiência do uso da água além de reduzir custos e poluição ambiental. O objetivo deste estudo foi avaliar o uso do mulch biodegradável no manejo de plantas daninhas e eficiência do uso da água (EUA) na cultura da alface. Os tratamentos foram papel reciclado marrom (RP), filme de polietileno preto (PF) e solo sem cobertura com remoção de plantas daninhas (WR) e sem remoção de plantas daninhas (WW). O RP e PF foram eficientes no controle das plantas daninhas. A temperatura do solo com RP foi 8,2 e 2,1ºC menor que PF e WR, respectivamente. A produtividade da alface com RP foi 14,5 e 28,3% superior ao WR e PF, respectivamente. O volume de água aplicado com RP foi 26,5% menor e EUA foi 55,6% maior em comparação a WR. A cobertura do solo com papel reciclado controlou a incidência de plantas daninhas, reduziu a temperatura do solo e o consumo de água e aumentou a produtividade e eficiência do uso da água na cultura da alface.
ISSN:0102-0536
1806-9991
DOI:10.1590/s0102-0536-20210314