The influence of feedstocks and additives in 23 added-value composts as a growing media component on Pythium irregulare suppressivity.

Autor: Hernández-Lara A; Centro de Edafología y Biología Aplicada del Segura (CSIC), Campus Universitario de Espinardo, 30100 Murcia, Spain. Electronic address: ahernandez@cebas.csic.es., Ros M; Centro de Edafología y Biología Aplicada del Segura (CSIC), Campus Universitario de Espinardo, 30100 Murcia, Spain., Pérez-Murcia MD; Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, ctra. Beniel Km 3.2, 03312 Orihuela, Alicante, Spain., Bustamante MÁ; Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, ctra. Beniel Km 3.2, 03312 Orihuela, Alicante, Spain., Moral R; Department of Agrochemistry and Environment, Miguel Hernández University, EPS-Orihuela, ctra. Beniel Km 3.2, 03312 Orihuela, Alicante, Spain., Andreu-Rodríguez FJ; Department of Engineering, Miguel Hernández University, EPS-Orihuela, ctra. Beniel km 3.2, 03312 Orihuela, Alicante, Spain., Fernández JA; Department of Agricultural Engineering, Technical University of Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain; Plant Biotechnology Institute, Edificio I + D + i, Campus Muralla del Mar, 30202 Cartagena, Spain., Egea-Gilabert C; Department of Agricultural Engineering, Technical University of Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Spain; Plant Biotechnology Institute, Edificio I + D + i, Campus Muralla del Mar, 30202 Cartagena, Spain., Antonio Pascual J; Centro de Edafología y Biología Aplicada del Segura (CSIC), Campus Universitario de Espinardo, 30100 Murcia, Spain.
Jazyk: angličtina
Zdroj: Waste management (New York, N.Y.) [Waste Manag] 2021 Feb 01; Vol. 120, pp. 351-363. Date of Electronic Publication: 2020 Dec 17.
DOI: 10.1016/j.wasman.2020.11.053
Abstrakt: Alternative materials with added-value functions, such as phytopathogen suppression and biostimulant and/or biofertilising activity, have been proposed as peat substitutes in growing media. The aim of this work was to evaluate the effect of 23 agro-industrial composts as components of growing media for baby-leaf lettuce transplant production and their activity against the plant pathogen Pythium irregulare. The composts were produced by mixing different starting feedstocks-tomato waste, leek waste, olive mill cake and vineyard pruning waste-with different additives (coffee, thyme, lavender and rockrose waste), which were incorporated at the beginning of the maturation phase. The results obtained indicated that the composts were mature enough to be used as growing media. The fresh weight of the lettuce plants grown with the different composts was significantly higher than in plants obtained with peat. Composts with the coffee additive produced higher lettuce fresh weight, while those with thyme yielded a lower fresh weight. Moreover, composts as components of growing media showed significantly higher P. irregulare suppressiveness than peat. The composts with additives produced lower lettuce fresh weight than composts without additives, but showed higher suppressiveness. Composts with additives showed opposite results depending on whether they were exposed to pathogens or not. Composts with additives showed opposite results according to pathogen pressure or not. Out of all the composts studied, the compost with tomato waste and leek waste as the initial feedstock, and lavender as an additive, showed the highest suppressive capacity. After lettuce harvesting, the growing media with composts showed significantly lower concentrations of P. irregulare than peat. Principal Component Analysis (PCA) revealed that the growing media with compost can be grouped together according to the additive type.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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