Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . Fig. 108. Cabbage Apbis: male, magnified. viviparously, but in autumn true males (Fig. 108)and females (Fig. 107) are developed, eggs beingdeposited by the latter upon the cabbage leaves. Remedies.—Kerosene emulsion is the most effec-tive insecticide that can be used against this insect. 202 INSECTS AFFECTING THE CABBAGE. It may readily be applied to cabbage from a knap-sack sprayer, like the one manufactured by the FieldForce Pump Company, or the Excelsior the insect
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . Fig. 108. Cabbage Apbis: male, magnified. viviparously, but in autumn true males (Fig. 108)and females (Fig. 107) are developed, eggs beingdeposited by the latter upon the cabbage leaves. Remedies.—Kerosene emulsion is the most effec-tive insecticide that can be used against this insect. 202 INSECTS AFFECTING THE CABBAGE. It may readily be applied to cabbage from a knap-sack sprayer, like the one manufactured by the FieldForce Pump Company, or the Excelsior the insect winters over in the egg state upon thecabbage leaves, it is advisable to destroy all the re-mains of the crop in autumn, not leaving the be-headed plants in the field all winter, as is too oftendone.
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Keywords: ., bookcentury1800, bookdecade1890, bookidi, booksubjectinsecticides
