Raising Soil pH to 6.5–7.0 With Nitrate Nitrogen Suppresses Tomato Fusarium Wilt

… more less Fusarium oxysporum wilt of tomato is worse below pH 6.5 and with ammonium nitrogen. Liming to 6.5–7.0, feeding nitrate rather than ammonium and choosing 'F'-coded varieties cuts losses; Verticillium wilt has no such pH lever, so rotation and 'V' varieties are the tools.