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. 2018 Mar 28;7(2):26. doi: 10.3390/plants7020026

Table 3.

Preplant soil test results (0–60 cm).

2016 2017
E1 M2 A3
Total N (kg ha−1) 67.1 104.4 278.5
P (ppm) 56 26 24
K (ppm) 336 246 344
Organic Matter, % 1.23 3.00 2.47