The Effect of Brush Competition and Plastic Mulch on Moisture Stress of Planted Douglas-Fir

摘要

The effect of black plastic mulch and brush competition on seedling plant moisture stress, soil temperature, and survival was investigated on a 30-acre (12-ha) south-facing brushfield in a Pseudotsuga menziesii/Physocarpus malvaceus habitat type at the Priest River Experimental Forest. No significant differences in mean plant moisture stress were detected among seedlings planted under brush, mulched with plastic, or planted in the open. Slope position did not affect seedling plant moisture stress but did affect soil temperatures.