For decades, apple growers have used Manchurian crab apples to pollinate their fruit. The crab apples bloom early, and Snowdrift apples bloom a little later. Between the two, orchardists figured they had their bases covered. Now, a Wenatchee, Washington, researcher says there is more to it. He is searching for new pollinizer trees to give growers more genetically precise alternatives, specifically those that resist rot.
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