High doses of fine biochar in sandy subsoils increase water retention, but also cause first-year yield depressions for drought-stressed barley
E Bruun, Carsten Tilbæk Petersen, Paul Iturbe-Espinoza, Anne Winding, Dorette Müller‐Stöver
This study shows that high doses of fine biochar improve water retention in sandy subsoils but cause first-year yield reductions in drought-stressed barley due to nitrogen immobilization.
bioRxiv · Oct 9, 2025 · PreprintPlant Biology