Plant placement and weed control to insure low humidity and short periods of needle wetness. Apply chlorothalonil three times at 3 week intervals beginning late May. 2. If early summer is warmer than normal start mid-June. 2nd and 3rd at 3 week intervals. Symptoms Infected needles are mottled and have dark green bands and yellow to tan spots.
Mottled areas turn brown to red-brown in color.
Needle tips may die while bases remain green. Needles may be cast the autumn after infection or remain attached until the following spring and summer. Same as for redband. Sporulation May-October, spores are blown or splashed from tiny dark brown or black fruiting structures that can be observed with a magnifying glass to lack the longitudinal slit opening characteristic of needlecast fungi. Same as for redband.