ISHS Acta Horticulturae 631: XXVI International Horticultural Congress: Issues and Advances in Transplant Production and Stand Establishment Research
USE OF COMMERCIAL SYSTEMIC ACQUIRED RESISTANCE (SAR) INDUCERS IN THE STAND ESTABLISHMENT OF TOMATO; IMPACT ON PLANT GROWTH, DISEASE AND NEMATODE SUPPRESSION |
| Authors: | C.S. Vavrina, P.D. Roberts, N. Kokalis-Burelle |
| Keywords: | systemic acquired resistance, induced systemic resistance, Lycopersicon esculentum, Xanthomonas campestris pv. vesicatoria, Meloidogyne incognita |
| Abstract:
Eleven commercially available materials advertised as promoting a SAR response in plants were applied to tomato transplants in the greenhouse. The treatments consisted of biological control agents, defensive proteins, plant activators, organic compounds, modified fertilizers, inert compounds, and a control. Two weeks after treatment, the transplants were measured to document SAR induced plant growth enhancement then either inoculated with a suspension of Xanthomonas campestris pv. vesicatoria or transplanted into pots containing field soil naturally infested with root-knot nematode (Meloidogyne incognita). Few significant SAR growth-enhancing effects were documented, however three SAR materials advanced fruit maturity resulting in early ripening. Three products showed limited suppression and one product enhanced bacterial spot development on tomato. None of the materials tested reduced nematode galling, however four improved general root condition. Though further research is necessary, these results help to define the SAR contribution to a systems management approach to commercial agriculture. | |
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