Meloidogyne-infested tomato crop residues are a suitable material for biodisinfestation to manage Meloidogyne sp. in greenhouses in Almería (south-east Spain)
Intensive horticulture generates large amounts of difficult-to-manage fresh-vegetable crop residues (biomass). These can be used as a source of organic matter for the process/technique of biodisinfestation of agricultural soils, which uses slightly decomposed organic materials to control soil-borne plant pathogens. This work shows the results of an experiment carried out in two greenhouses with sandy soil infested with Meloidogyne in Almería, south-east Spain. Biodisinfestation was carried out from June to August (90 days). Tomato plants, including nematode-infected roots, were incorporated into the soil at a rate of 2 kg m-2 along with fresh sheep manure (4 kg m-2), and soil was covered with transparent polyethylene. The maximum average temperature reached 38.88°C at 30 cm depth and remained practically constant throughout the 3-month period. The results of the biodisinfestation showed a significant reduction of damage due to Meloidogyne. Tomato root galling index was below 1 (scale: 0-10) at the end of the crop, compared with the control (5-9). However, Meloidogyne juveniles were detected in 54.5% of sampling sites for biodisinfected soils at the end of the crop. Free-living nematodes were present in all biodisinfested soil samples. Their presence was always higher at 30 cm compared with 50 cm depth. Incorporation into the soil of the residue of tomato plants at the end of the crop along with fresh sheep manure and solarization for 3 months is effective to control Meloidogyne sp., and provides an alternative for the management of in-farm vegetable crop residues.
Gómez‐Tenorio, M.A., Lupión‐Rodríguez, B., Boix‐Ruiz, A., Ruiz‐Olmos, C., Marín‐Guirao, J.I., Tello-Marquina, J.C., Camacho-Ferre, F. and de Cara-García, M. (2018). Meloidogyne-infested tomato crop residues are a suitable material for biodisinfestation to manage Meloidogyne sp. in greenhouses in Almería (south-east Spain). Acta Hortic. 1207, 217-222
biodisinfestation, nematodes, solarization, tomato