Fig. 1.

Disease incidence of spinach by Fusarium oxysporum f. sp. spinaciae (A, C) and Boston lettuce by F. oxysporum f. sp. lactucae (B, D) in Aichi soil (A, B) and Ibaraki soil (C, D). NF, unfertilized; CF, chemical fertilizer; CF+FYM, chemical fertilizer and 40 t ha⁻¹ y⁻¹ farmyard manure; CRC, chemical fertilizer and 40 t ha⁻¹ y⁻¹ coffee residue compost; FYM, 400 t ha⁻¹ y⁻¹ farmyard manure. Cont, compound inorganic fertilizers; RSM, 940–4,700 kg ha⁻¹ rapeseed meal; FM, 710–3,600 kg ha⁻¹ fish meal; SBM, 1,300–6,300 kg ha⁻¹ steamed bone meal; Mix, 930–4,600 kg ha⁻¹ mixture of rapeseed meal, fish meal, and steamed bone meal. Values show the median with the upper and lower quartile points (A, C: n=12; B, D: n=9). * and ** indicate significant differences from NF or Cont at P<0.05 and P<0.01, respectively.