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Image Number K10883-1

Grapefruit trees on US-802 (left) and US-897 (right) rootstocks growing in a grove severely infested with Diaprepes weevil and the fungi Phytophthora nicotianae and P. palmivora. The two trees with tolerant rootstocks appear to be healthy, while neighboring trees on common commercial rootstocks are declining. Robert Adair, Jr., director of the Kerr Center for Sustainable Agriculture, a cooperator in the ARS-led citrus rootstock study, stands between the trees to give a sense of scale.

Photo by Kim Bowman.

640 pixels wide: (k10883-1.jpg)

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