For each DBSR treatment, we only collected soil samples from the 10 cm-thick soil layer just above and below straw layers using a soil auger (10–20cm and 20–30cm deep in the soil).
For each DBSR treatment,we only collected soil samples from the 10 cm-thick soil layer justabove and below straw layers using a soil auger (10–20cm and20–30cm deep in the soil).