Biocontrols offer alternatives to chemicals

For years I’ve heard organic gardeners talk about attracting beneficial insects to your garden. Preying mantis comes readily to mind, but there are many other beneficial insects. But can these insects be relied on to control insects in a commercial greenhouse? Should growers take the risk of loosing a crop if the “beneficials” don’t do the job when fogging a greenhouse with chemicals will surely snuff out the aphids, thrips and whiteflies?

One greenhouse grower, Dickman’s Farms took the risk. They wanted to get away from potentially harmful chemicals and also the viscous circle of spraying and the inconvenience of closing up the houses during the reentry interval, the time from when you spray until you can go back in.

Read how Dickman’s pulled it off, including how they used “banker plants” to feed their beneficial insects. more

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