Patent GB-1023806-A (GB)
Title: An improved insecticidal composition
IPC: A01N63/20
Filed: 1964-02-03
Abstract: An insecticidal composition comprises living cells of an alkalophilic acid-producing bacteria and a carrier which is suitable for forming insecticidal composition.  The alkalophilic acid-producing bacteria such as Streptococcus faecalis ATCC 15335, Streptococcus faecalis ATCC 15336, Aerobacter aerogenes ATCC 15337 or a natural or induced mutant or variant thereof, are obtained by culturing the bacteria for from 2-3 days in a strongly alkaline medium of pH 9-11 containing a carbon source, a nitrogen source, inorganic substances and, if necessary, other growth promoting factors.  The composition may be in the form of the culture broth containing the living cells, a dust, a suspension or an emulsion. Carriers specified are talc, clay, diatomaceous earth, lime, kaolin, carbon, wheat flour and surface active agents.  The insecticidal compositions may be used by being admixed with other kinds of insecticides or pesticides, herbicides, plant growth regulators, fertilizers or manures, provided these are harmless against the living cells of bacteria employed.  The insecticidal compositions are exemplified by (1) a powder comprising 2 parts by weight of freeze-dried powder of living cells of Streptococcus faecalis ATCC 15335 and 98 parts by weight of talc, and (2) a wettable powder comprising 5 parts by weight of freeze-dried powder of living cells of Streptococcus faecalis ATCC 15336 and Aerobacter aerogenes ATCC 15337 in a weight ratio of 2:1, 40 parts by weight of bentonite, 40 parts by weight of sucrose, 10 parts by weight of talc and 5 parts by weight of alkylaryl sulphonic acid.ALSO:An insecticidal composition comprises living cells of an alkalophilic acid-producing bacteria and a carrier which is suitable for forming insecticidal compositions.  The alkalophilic acid-producing bacteria such as Streptococcus faecalis ATCC 15335, Streptococcus faecalis ATCC 15336, Aerobacter aerogenes ATCC 15337 or a natural or induced mutant or variant thereof, are obtained by culturing the bacteria for from 2 to 3 days in a strongly alkaline medium of pH 9.0-11.0 containing a carbon source, a nitrogen source, inorganic substances and, if necessary, other growth promoting factors.  The composition may be in the form of the culture broth containing the living cells, a dust, a suspension or an emulsion. Carriers specified are talc, clay, diatomaceous earth, lime, kaolin, carbon, wheat flour and surface active agents.  The insecticidal compositions may be used by being admixed with other kinds of insecticides or pesticides, herbicides, plant growth regulators, fertilisers or manures, provided these are harmless against the living cells of bacteria employed.  The insecticidal compositions are exemplified by (1) a powder comprising 2 parts by weight of freeze-dried powder of living cells of Streptococcus faecalis ATCC 15335 and 98 parts by weight of talc, and (2) a wettable powder comprising 5 parts by weight of freeze-dried powder of living cells of Streptococcus faecalis ATCC 15336 and Aerobacter aerogenes ATCC 15337 in a weight ratio of 2 : 1, 40 parts by weight of bentonite, 40 parts by weight of sucrose, 10 parts by weight of talc and 5 parts by weight of alkylaryl sulphonic acid.