The importance of accounting method and sampling depth to estimate changes in soil carbon stocks

Table 2 WICST treatment descriptions^a

WICST grain treatments
Maize	High-external input, continuous maize system
MS	Moderate external input, no-till maize-soybean system
MSW	Organic maize-soybean-wheat followed by cover crop
WICST forage treatments
MAAA	Maize-alfalfa-alfalfa-alfalfa rotation
MOA	Organic maize-oats/alfalfa/alfalfa rotation

^aAll soil sampling occurred in the fall. Where applicable, this was done after crop harvest but before tillage. Tillage did not exceed 20 cm for all treatments. See Additional file 1: Table S2 for specific tillage information for the WICST treatments

ISSN: 1750-0680