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Evaluation of pesticide OFB Eden on Powdery Mildew
The following is from a report done in the United States under controlled conditions:
Evaluations were conducted to test the performance of "OFB Eden" for controlling powdery mildew infections on rose. Laboratory bioassays were used to evaluate the ability of "OFB Eden" to eradicate existing powdery mildew infections and evaluate any residual action of "OFB Eden" against reoccurring infections at two concentrations. Two small plot trials using potted roses were also conducted in a non-producing commercial greenhouse to confirm laboratory results.
The laboratory bioassays revealed that "OFB Eden" at dilutions of 150 and 300:1 (6,666 and 3,333ppm) resulted in virtually 100 percent elimination of powdery mildew infections on potted rose plants relative to the water only control plants. The residual control tests showed that reoccurrence of powdery mildew was suppressed for the 300:1 treatment from 4 to 7 days under high disease pressure. The ISO: I treatment suppressed powdery mildew a little longer from 5 to 9 days.
The small plot trials showed similar results as the laboratory trials. Small plot trial demonstrated the 300:1 treatment effectively eradicated mildew infections on potted rose and suppressed their reoccurrence for at least a five-day period under field conditions. A second replicated block trial also showed eradication and suppression from a 4 to 7 day period at 300:1, while the 150:1 treatment gave slightly longer suppression up to 9 days. Both treatments of "OFB Eden" were found to perform as well, or better, than Pipronil, a standard fungicide used for mildew control in commercial roses.
From these initial trials it has been shown that "OFB Eden" can operate as an effective fungicide for Sphaerotheca pannosa control on roses and may have application against this and possibly other species of powdery mildew in commercial agriculture.
It should be noted that these tests were done in the United States and have not yet been certified by the relevant Australian authorities. Until such time as they are, we are making no claims in Australia that "OFB Eden" is a fungacide.