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Article

Green Strategies of Powdery Mildew Control in Hop: From Organic Products to Nanoscale Carriers

1
Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS), Escuela de Ingeniería Agraria y Forestal, Universidad de León, 24009 León, Spain
2
Centro de Biocombustibles y Bioproductos, ITACyL—Instituto Tecnológico Agrario de Castilla y León, Villarejo de Órbigo, 24358 León, Spain
*
Author to whom correspondence should be addressed.
These authors contributed equally to this paper.
Academic Editors: Antonieta De Cal, Inmaculada Larena and Paloma Melgarejo
J. Fungi 2021, 7(6), 490; https://doi.org/10.3390/jof7060490
Received: 19 April 2021 / Revised: 14 June 2021 / Accepted: 15 June 2021 / Published: 19 June 2021
(This article belongs to the Special Issue Control of Fungal Diseases in Crops)
Humulus lupulus L. is a long-lived, perennial, herbaceous, and dioecious climbing plant. The foremost producers in the European Union are Germany, the Czech Republic, Poland, Slovenia, and Spain. The Spanish cultivated area is concentrated in the province of León. Powdery mildew, caused by Podosphaera macularis, menaces hop production and quality in all hop growing regions located in the Northern hemisphere, colonizing leaves, petioles, inflorescences, and finally cones. In this work, powdery mildew control was monitored, comparing nine fungicide strategies: five organics, two integrated disease management (IDM)-based, with and without Nutragreen® nanoscale carrier, and two conventional treatments (CON) with and without Nutragreen® nanoscale carrier. The organic treatments were able to diminish P. macularis on leaves, but no effect was observed in cones. CON treatments reduced the infection on leaves and cones and increased the cone quantity and quality. Likewise, IDM-based treatments provided satisfactory results as they diminished powdery mildew on leaves and cones. Finally, dose reduction using a Nutragreen® nanoscale carrier showed beneficial effects in the control of powdery mildew compared to the commercial dose. Hence, the use of nanoscale carries permits a 30% reduction in pesticide dose, which optimizes yield and hop quality, reduces risks linked to pesticides, and aids in compliance with public and international policy demands. View Full-Text
Keywords: Humulus lupulus; Podosphaera macularis; yield index; α-acids yield; nanoscale carriers; fungicides; Nugget cultivar; integrated disease management Humulus lupulus; Podosphaera macularis; yield index; α-acids yield; nanoscale carriers; fungicides; Nugget cultivar; integrated disease management
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MDPI and ACS Style

Porteous-Álvarez, A.J.; Maldonado-González, M.M.; Mayo-Prieto, S.; Lorenzana, A.; Paniagua-García, A.I.; Casquero, P.A. Green Strategies of Powdery Mildew Control in Hop: From Organic Products to Nanoscale Carriers. J. Fungi 2021, 7, 490. https://doi.org/10.3390/jof7060490

AMA Style

Porteous-Álvarez AJ, Maldonado-González MM, Mayo-Prieto S, Lorenzana A, Paniagua-García AI, Casquero PA. Green Strategies of Powdery Mildew Control in Hop: From Organic Products to Nanoscale Carriers. Journal of Fungi. 2021; 7(6):490. https://doi.org/10.3390/jof7060490

Chicago/Turabian Style

Porteous-Álvarez, Alejandra J., M. M. Maldonado-González, Sara Mayo-Prieto, Alicia Lorenzana, Ana I. Paniagua-García, and Pedro A. Casquero 2021. "Green Strategies of Powdery Mildew Control in Hop: From Organic Products to Nanoscale Carriers" Journal of Fungi 7, no. 6: 490. https://doi.org/10.3390/jof7060490

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