. Fig. 196. — Bactsrial blight of walnuts. After R. E. Smith. Two treatments with Bordeaux mixture, after thorough removal of diseased parts, have been known to prevent 50 per cent of the The second spraying should be given when the nuts are firmly set. Care should be taken to select resistant trees for propagation. WILLOW Tar spot (Rhytismose). See maple. Rust (Melampsora saliciscaprce (Pers.) Wint.). — Of tree rusts this is one of the most abundant, occurring as 1 Dept. Agr. Yearbook, p. 98, 1904.

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