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Filtering by: Subject Soils -- Composition Subject Soil amendments

Effects of mulch and forest floor material on soil macro-nutrients in homogenized soil cores

Creator:

Newman, Joseph Paul

Abstract:

Effects of three mulches of tree foliage and twigs (red alder, Douglas-fir, and salal) and homogenized, partially decomposed material (forest floor) on soil macronutrients (Ca, K, Mg, P, NO3, and NH4) were evaluated in the summer of 1997. These effects were measured with buried, coated ion-exchange resin bags at two...

Resource Type:

Masters Thesis
Chemical and physical properties of Douglas fir bark relevant for the production of container crops in Oregon

Creator:

Buamscha, Maria Gabriela

Abstract:

It is widely accepted among nursery producers that [Pseudotsuga menziesii (Mirbel) Franco] bark (DFB) is an excellent substrate for container production, hence its widespread use in Oregon and other regions where Douglas fir constitutes a significant portion of the forest products industry. Despite its widespread use, little information is available...

Resource Type:

Masters Thesis