One experiment was initiated in the fall of 1991 to evaluate the effect of
chloride (Cl) fertilizers on the suppression of take-all disease (Gaeumanno
myces graminis var, tritici Walker) in winter wheat (Triticum aestivum L.).
Preplant and topdress rates of potassium chloride (KCI) and calcium chlori
de (CaCl2) (0, 34, 67 and 101 kg Cl ha(-1)) were applied each year. In 1995
, plots were split in half whereby one half received 2.24 Mg of 76% ECCE li
me ha(-1) to elevate the pH and potentially increase disease incidence. Whe
at grain yield was not affected by lime applications in any year (1995-1999
). Plots exhibited visual symptoms of take-all in almost all years, however
, grain yields increased in only two of eight years by the application of C
aCl2 and KCl. Applied fertilizer Cl for take-all disease suppression was in
consistent, even following the application of lime where increased soil pH
can increase disease severity.