The Variability of Nitrogen Forms in Soils Due to Traditional and Precision Agriculture: Case Studies in Poland.

Int J Environ Res Public Health · 2021 · PMC7827450 · PMID 33430097

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a decreasing trendno p-value reported

Our study also pointed out that nitrate as well as the content of the sum of ammonium and organic N in soils have a decreasing trend with depth both for UNI and VRA fertilization ( Figure 6 and Figure 7 ).

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