. Foliage sprays for site preparation and release from six coastal brush species. Herbicides; Brush Control Northwest, Pacific. California Hazel Late spring California hazel treatments were applied on June 16 (early treat- ment), when three-quarters of the leaves were fully developed and nuts were 1/4 to 1/2 inch in diameter. By midsummer, August 11 (late treatment), growth had ceased and nuts were mature. California hazel shrubs have a growth habit similar to that of vine maple and frequently are associated with it. Surprisingly, California hazel was more suscep- tible than vine maple to foli
. Foliage sprays for site preparation and release from six coastal brush species. Herbicides; Brush Control Northwest, Pacific. California Hazel Late spring California hazel treatments were applied on June 16 (early treat- ment), when three-quarters of the leaves were fully developed and nuts were 1/4 to 1/2 inch in diameter. By midsummer, August 11 (late treatment), growth had ceased and nuts were mature. California hazel shrubs have a growth habit similar to that of vine maple and frequently are associated with it. Surprisingly, California hazel was more suscep- tible than vine maple to foliage sprays and timing effects were pronounced (table 5). In general, combinations of herbicides were no more effective than herbicides applied alone and early foliar sprays were more effective than late foliar sprays. Acceptable control was obtained with early applications of 1 lb aehg of picloram, 1 lb aehg each of 2,4-D and dichlorprop, or 3 lb aehg of 2,4, 5-T (fig. 5). A lower rate of 2,4,5-T and both rates of silvex were less effective. MSMA did not increase the effect of a 1 lb aehg spray of 2,4,5-T. Early foliar sprays of 2,4,5-T can be used to release conifers if trees are protected from direct application by the California hazel canopy. For site prepara- tion, either picloram or a mixture of 2,4-D and dichlorprop will produce good control if applied when shrubs are actively growing. Figure 5.—Late spring sprays of 1 lb aehg picloram produced good control of California hazel 12. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stewart, R. E; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ). Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture
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