Promising composts as growing media for the production of baby leaf lettuce in a floating system
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AuthorGiménez Martínez, Almudena; Fernández Hernández, Juan Antonio; Pascual Valero, José Antonio; Ros Muñoz, Margarita; Sáez Tovar, José Antonio; [et al.]
Knowledge AreaProducción Vegetal
SponsorsThis research was funded by the Spanish Ministry of Economy and Competitiveness: Reference project: AGL2017-84085-C3-1-R, AGL2017-84085-C3-2-R, AGL2017-84085-C3-3-R.
Bibliographic CitationGiménez A, Fernández JA, Pascual JA, Ros M, Saez-Tovar J, Martinez-Sabater E, Gruda NS, Egea-Gilabert C. Promising Composts as Growing Media for the Production of Baby Leaf Lettuce in a Floating System. Agronomy. 2020; 10(10):1540. https://doi.org/10.3390/agronomy10101540
The floating system is a successful strategy for producing baby leaf vegetables. Moreover, compost from agricultural and agri-food industry wastes is an alternative to peat that can be used as a component of growing media in this cultivation system. In this study, we experimented with three composts containing tomato (Solanum lycopersicum L.), leek (Allium porrum L.), grape (Vitis vinifera L.), and/or olive (Olea europaea L.) mill cake residues, which were used as the main component (75/25 volume/volume) of three growing media (GM1, GM2 and GM3) to evaluate their e_ect on the growth and quality of red baby leaf lettuce (Lactuca sativa L.). We used a commercial peat substrate as a control treatment (100% volume) and in mixtures (25% volume) with the composts. The plants were cultivated over two growing cycles, in spring and summer, and harvested twice in each cycle when the plants had four to five leaves. We found that the percentage of seed germination was significantly higher in plants ...
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