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Decision chart for evaluating need for dormant aphid control.From C. Pickel, W.H. Olsen, R.P. Buchner, W.H. Krueger, F.J. Niederholzer, and M.V. Norton. 2006. Seasonal Guide to Environmentally Responsible Pest Management Practices in Prunes. Univ. Calif. Div. Agric. Nat. Res. Publ. 21624. Oakland. |