POTASSIUM SULPHIDE

Evening Post, Volume CXXIII, Issue 112, 13 May 1937, Page 28

POTASSIUM SULPHIDE

MILDEW AND OTHER FUNGOID

DISEASES

Potassium sulphide, or liver of sulphur, should be used in every garden as it is one of the most valuable and adaptable of garden remedies, especially for mildew. Used at the rate of one ounce to ten gallons of water it gets as a preventive of many fungoid diseases, and is perfectly harmless to foliage. If applied at twice or three times the above strength, it is

a powerful fungicide,, but rather apt to injure delicate foliage under certain conditions. For use. out of doors the strength", of the, application must be adjusted to the weather.' For roses and similar plants one ounce in three gallons of water is the maximum strength for cool, damp weather, while in hot, bright weather, and with a somewhat : flagging plant one ounce in six or seven gallons ,of 7.water is the limit of safety. . Enough soft soap to make a. good lather should always be added as a spreader and to make the solutioii-ysticki to the plant.:

It should be remembered that liver of-sulphur; will tblacken fwhite lead paint, and for inside the greenhouse zinc white should be' used instead of lead paint, and thus the blackening may,be ; avoided..■.- -i ■■■*■: The great objection to the use of! potassium is its objectionable smell, but in the open-air this goes off in an hour or so. For,, mildew it is wise to take time by the forelock and spray plants subject to this disease before the trouble appears. Delphiniums, sweet ,peas. etc.,-if sprayed once every three weeks in the early stages will most probably 'remain free throughout their flowering period. ■