WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Friday, April 20, 2018

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8559. Hammel, J.E.. 1989. Long-term tillage and crop rotation effects on bulk density and soil impedance in northern Idaho.. Soil Sci. Soc. Amer. J. 53:1515-1519.
Bulk density and soil impedance (measured with a penetrometer) were studied on a set of tillage x rotation plots after 10 yr of treatments. Tillage had a significant effect on bulk density, but not on soil impedance. Crop rotation did not significantly influence either property. There were differences with depth. Minimum and no-till soil impedance was greater than conventional till in the surface 5-15 cm. Higher impedance values under reduced tillage, while not preventing root growth, may limit root function when combined with typical cool, wet spring soils, and thus decrease crop growth potential.

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