Biochar Alone Did Not Increase Microbial Activity in Soils from a Temperate Climate That Had Long-Term Acidity Stress

Biochar can increase the microbial activity of a soil and seed yield oilseed rape. We performed field experiment to determine effect different doses biochar impact nutrient additions on in soils with low pH (4.69). Different were applied plots 2016 (0 t/ha (control), 15 (B15), 30 (B30), or 45 (B45)), fertilization was during 2019 (90 kg P/ha) 2020 (50 N/ha, 80 P/ha, 50 K/ha). Maize grown 2016, barley 2017, maize 2018, wheat 2019, winter rape 2020. All analyses carried out Higher led reduced inhibition (cumulative respiration, dehydrogenase (DHA), leaching mineral forms nitrogen). Notably, more than 60% lower highest dose. increased compared control (control: 4.51 ± 0.04, B15: 4.69 B30: 5.06 0.05, B45: 5.05 0.04) but did not Thus, application alone activities, although it pH.