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Browsing by Subject "Soil amendments"
Now showing items 1-9 of 9
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(Corvallis, Or. : Extension Service, Oregon State University, 1967)
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(1998-06-22)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 ...
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(Corvallis, OR : Oregon State University Extension Service, 1995-09)
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(Corvallis, OR : Oregon State University Extension Service, 1990-03)
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([Corvallis, Or.] : Oregon State University, Extension Service, 2003-05)This publication will help you understand the importance of soil organic matter levels to good plant performance. It also contains suggestions for suitable soil amendments. Any soil, no matter how compacted, can be i ...
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(1993-12-09)Western redcedar, western hemlock, and Douglas-fir seedlings were transplanted into pots in one of two soils representative of high and low levels of available NO3 (and total N). The soils were collected from sites at Ca ...
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([Corvallis, Or.] : Oregon State University, Extension Service, 2001-10)Muchas personas plantan un cultivo de cobertura en el otoño después de quitar las plantas anuales. En este caso, use una variedad que tolere el frío. El trébol carmesí es excelente para el oeste de Oregon. Antes del ...
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(2003-03-05)
Now showing items 1-9 of 9
