Table 3.

Average (+/– SE) cover crop biomass, aboveground N content, and soil inorganic N in the top 0.3 m at cover crop termination.

	2019			2020
	AR	KY	MN	AR	KY	MN
Cover crop biomass (kg/ha)	5,110 ± 321	3,875 ± 224	588 ± 61	6,353 ± 419	3,059 ± 337	1,578 ± 150
Cover crop N content (kg/ha)	34.7 ± 4.2	42.2 ± 3.9	13.6 ± 2.0	64.7 ± 6.0	30.8 ± 2.0	44.6 ± 4.5
Soil inorganic N (kg/ha) after fallow	58.5 ± 0.2	22.5 ± 1.0	19.8 ± 0.6	12.8 ± 2.4	4.4 ± 4.4	11.1 ± 3.5
Soil inorganic N (kg/ha) after cover crop	36.3 ± 2.2	16.8 ± 2.6	10.5 ± 1.9	4.9 ± 4.4	7.8 ± 3.5	6.8 ± 1.0