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Fig. 5. Effect of spring-seeded (1992) ryegrass cover crop (incorporated in May 1993) on soil NO3–N concentrations at various depths in May 1993 and 1994, including standard error bars.





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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