Research Article
Environmentally Smart Nitrogen Performance in Northern Great Plains’ Spring Wheat Production Systems
Table 7
Simple effects of two-way interactions of source by at-seeding and topdress N rates for N uptake from selected site-years where interaction effect was significant at least at .
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Across rows for each site-year, at-seeding N rate, or topdress N rate, LS means followed by different uppercase letters are significant at . represents significant linear trend, for at-seeding N rate for each site-year. Down a column for topdress N rates, LS means followed by different lowercase letters are significant at for each source. |