JEQ Journal of Natural Resources and Life Sciences Education
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Fig. 3. Annual trends in (a) soluble reactive P (SRP) in river water and fertilizer P sales; (b) soil test P and number of soil samples submitted for analysis in northwestern Ohio.





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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome