Table 4. Mean, SD, and sample size (n) of shoot-to-root ratios observed in this paper and Bolinder et al. (75).

Ratio	Land use	Mean	SD	n	Reference
Shoot/root	Small-grain cereals	7.4	3.6	59	Bolinder et al. (75)
	Corn	5.6	2.8	21
	Soybean	5.2	3.1	12
	Perennial forages	1.6	1.2	63
	Crops and cover crops	3.3	1.5	20	This review
	All	4.5	2.4	175	Weighted average