ISHS Acta Horticulturae 730: VI International Symposium on Artichoke, Cardoon and Their Wild Relatives
EVALUATION OF CAULIFLOWER RESIDUE INCORPORATION FOLLOWED BY TARPING FOR VERTICILLIUM WILT CONTROL IN ARTICHOKE |
| Authors: | M. Berbegal, J. García-Jiménez, J. Armengol |
| Keywords: | crucifer residues, Cynara cardunculus var. scolymus, glucosinolates, metham sodium, solarization |
| Abstract:
Verticillium wilt caused by Verticillium dahliae has recently become an important disease on artichoke in Comunidad Valenciana (Eastern Spain). In this study, the effectiveness of cauliflower residue incorporation in soil to control Verticillium wilt of artichoke was evaluated in a commercial field naturally infested with V. dahliae microsclerotia. The treatments were cauliflower residue with metham sodium with tarp and without tarp, cauliflower residue with tarp and without tarp, tarp alone and control. An average of 300 kg of fresh cauliflower residue was uniformly incorporated into the corresponding plots (73 m2). Transparent PE plastic sheets were spread in June across the treatments involving tarping and removed after 35 days. Inoculum densities were determined at 0, 35, 119 and 336 days after the treatments using the modified Anderson sampler technique. Disease incidence was recorded in October and may, percentage of isolation from the infected plants was determined in October and finally, yield was also evaluated. Inoculum density remained low at the end of the growing season only in treatments where cauliflower residue and tarp were applied and in treatments with cauliflower residue with tarp and metham sodium. Percentage of infected plants resulted lower compared with the control in treatments involving solarization regardless the incorporation of cauliflower residue. Percentages of isolation from infected plants were similar in plots where cauliflower and cauliflower with metham sodium were applied and significantly lower compared with the control. These results show the potential of cauliflower residue incorporation in soil to control Verticillium wilt of artichoke as much as, or more, than metham sodium treatments. An approach to increase the benefits of cauliflower mediated disease suppression would be the combination of solarization practices with artichoke-cauliflower rotation. | |
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