Progress 05/17/99 to 09/30/05 Outputs Treatments of watermelon seeds contaminated with Acidovorax avenae subsp. Biological control materials, plant defense activators, and strobilurin fungicides are some of the types of control materials that will be tested. New and conventional controls of fungal foliar diseases of cucurbits will be evaluated. The use of plant defense activators in combination with copper-containing fungicides for the control of fruit blotch in the transplant The effectiveness of wet-seed treatments on seed transmission will be evaluated. The role of seed transmission of the bacterium in cucurbits other than watermelon in the epidemiology of the disease will be determined. Bacterial fruit blotch of watermelon is seed-transmitted. The biocontrol isolates will be incorporated into the potting soil used in the transplant house to induce resistance prior to transplanting therefore, field application of large amounts of biocontrol product is not required. oxysporum isolates is due to induced resistance in the plant. Preliminary tests have indicated that the biocontrol activity of these F. The suppressiveness was induced by growing Crimson Sweet watermelon in a monoculture. I appreciate your comments.Project Methods Biocontrol isolates of Fusarium oxysporum are being obtained from a soil that is suppressive to Fusarium wilt of watermelon. One week after being picked the damage is clearly visible from the outside making the fruit un-sellableĪn end on cut showing the intitial spread on the inside of the cucumber. I also like the idea of using a lot of Sodium Hypo-chloride in between crops to supress spore numbers. I definitely like the idea of cleaning the knifes and cutters regularly in disinfectants. Hygiene This is something that cucumber growers especially are very relaxed with.It comes down to your most limiting factors. So, you either spend money on energy or chemicals and spraying. However, if you follow the first four steps your frequency for spraying will be reduced.
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