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PHOSPHATASE ACTIVITY IN SANDY SOIL INFLUENCED BY MYCORRHIZAL AND NON-MYCORRHIZAL COVER CROPS

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Figure 1. Mycorrhizal colonization indexes in roots collected in plots grown with oilseed radish (OR), corn spurry (CS), black oat (BO) or under fallow (CO) during winter cover crop growth and in the subsequent summer (pearl millet and sunnhemp)
Table 3. Pearson correlation coefficients between acid and alkaline phosphatase activity levels, extractable P, microbial P in sandy soil sampled during the first winter growing season (n=160)

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