Fig. 2 Effect of freezing on denitrification rates in 0.25- to 2- and 2- to 5-mm macroaggregate fractions from continuous barley under conventional till (CT–C) and a barley–red clover rotation under no-till (NT–R) management systems
Fig. 2 Effect of freezing on denitrification rates in 0.25- to 2- and 2- to 5-mm macroaggregate fractions from continuous barley under conventional till (CT–C) and a barley–red clover rotation under no-till (NT–R) management systems