Variations of soil phosphatase activity and phosphorus fractions in ginger fields exposed to different years of chloropicrin fumigation

Abstract Purpose Although soil fumigation efficiently controls soil-borne diseases, the effects of repeated on phosphorus (P) cycling are still largely unknown. Methods In this study we conducted a field experiment to explore availability in ginger fields with 0, 3, and 7 years (F0, F3, F7) annual chloropicrin (CP) history Shandong Province China. Soil samples (0–20 cm) were collected at four different times 2019. Ginger yield, phosphatase (acid alkaline) activities, P fractions measured. Results showed that rhizome yield was similar F0 F3 (70.0 t ha −1 ), but significantly lower F7 (37.5 ). The acid (AiP) activity higher F0, while alkaline (AlP) highest F3. There no significant difference available (resin-P + NaHCO 3 -P NaOH-P) between F7, 33.6 57.5% total (TP), being less than 30% TP. Redundancy analysis (RDA) pH values contributed lowest there. AiP activities highly positive labile contents. Conclusion suggested more fertilizers needed after CP avoid deficiency for growth. death became main limitation production fumigation, which time, comprehensive agricultural practices should be considered control diseases.