Djian-Caporalino C. auteur aut IRD Mateille Thierry auteur aut IRD Bailly-Bechet M. auteur aut IRD Marteu N. auteur aut IRD Fazari A. auteur aut IRD Bautheac P. auteur aut IRD Raptopoulo A. auteur aut IRD Duong L. V. auteur aut IRD Tavoillot Johannes auteur aut IRD Martiny B. auteur aut IRD Goillon C. auteur aut IRD Castagnone-Sereno P. auteur aut IRD text journalArticle eng text/pdf born digital access Current restrictions on the use of chemical nematicides have led to an increase in root-knot nematode (RKN) damages in horticultural crops. The effects of two sorghums as summer cover crops, Sorghum sudanense sudangrass cv. 'Piper' or sudangrass hybrid [S. bicolor x S. sudanense] '270911', respectively with low and high dhurrin contents, were compared in their ability to suppress RKN in a vegetable production system. The use of both sorghums 'Piper' and '270911' as a green manure was found to be an effective strategy for decreasing RKN infestation in the soil, thereby protecting the subsequent planting of RKN susceptible crops (chard, lettuce or melon). Analytical experiments were further conducted in growth chamber and greenhouse pot experiments to investigate and compare the susceptibility of the sorghums and the factors affecting their efficacy for RKN management, in order to better explain the results obtained in the field trial. The two sorghums were poor hosts of RKN, acted as trap crops and as a biofumigant releasing hydrogen cyanide. Time of planting, time of biofumigation, and type of soil affected their efficacy for RKN management. For best RKN suppression, the sorghum cover crops need to be cultivated during one month or less and biofumigated for one month prior to crop planting. The trapping effect of both sorghums in clayey soil was less efficient than in sandy or sandy-loamy soils. Combining less than 30-days of sorghum culture and 10-days soil incorporation with solarization mulch was particularly efficient in suppressing nematodes. No effect relative to the sorghum type was detectable as long as they were used appropriately. specialized Meloidogyne sp. Sorghum vulgare var. sudanense Sudangrass hybrids Cover crop Trap crop Biofumigation FRANCE PROVENCE ZONE MEDITERRANEENNE 076 074 122 142-150 2019 0261-2194 https://www.documentation.ird.fr/hor/fdi:010076134 10.1016/j.cropro.2019.05.002 0261-2194 [F B010076134] https://www.documentation.ird.fr/hor/fdi:010076134 https://www.documentation.ird.fr/intranet/publi/2019/07/010076134.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-08-05 2025-02-24 fdi:010076134 fre