Injurious Insects; How to Recognize And Control Them
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200 PESTS OF GARDEN AND FIELD CROPS or more generations on some alternate host plant, and sm'vives there through the winter.
When found on garden crops, the Hce may be killed by spraying with tobacco extract or 5 per cent kerosene emulsion. Fumi- gation with carbon bisul- phide will destroy them, using an inverted tub as a fumigating chamber. The dose should be at the rate of one tablespoonful of car- bon bisulphide to a 20 gallon tub. Aphis punk may be substituted for the carbon bisulphide and... a light frame of oiled muslin may take the place of the tub.
Where cotton is infested, direct control is impracti- FiG. 249. — Wingless and winged adults of the Melon Aphis on Leaf. Enlarged.
Original.
cable. In this case adopt rigorous clean culture so that weeds may be kept down in and around the field.
The Pea Aphis {Macrosiphum pisi Kalt.) In seasons of abnormally dry spring weather a large green plant louse becomes abundant on peas. The adult lice are one eighth of an inch long, pea-green in color, with prominent dark red eyes, and long legs.
What to read after Injurious Insects; How to Recognize And Control Them?
You can find similar books in the "Read Also" column, or choose other free books by O'kane, Walter Collins, B. 1877 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
200 PESTS OF GARDEN AND FIELD CROPS or more generations on some alternate host plant, and sm'vives there through the winter.
When found on garden crops, the Hce may be killed by spraying with tobacco extract or 5 per cent kerosene emulsion. Fumi- gation with carbon bisul- phide will destroy them, using an inverted tub as a fumigating chamber. The dose should be at the rate of one tablespoonful of car- bon bisulphide to a 20 gallon tub. Aphis punk may be substituted for the carbon bisulphide and... a light frame of oiled muslin may take the place of the tub.
Where cotton is infested, direct control is impracti- FiG. 249. — Wingless and winged adults of the Melon Aphis on Leaf. Enlarged.
Original.
cable. In this case adopt rigorous clean culture so that weeds may be kept down in and around the field.
The Pea Aphis {Macrosiphum pisi Kalt.) In seasons of abnormally dry spring weather a large green plant louse becomes abundant on peas. The adult lice are one eighth of an inch long, pea-green in color, with prominent dark red eyes, and long legs.
What to read after Injurious Insects; How to Recognize And Control Them?
You can find similar books in the "Read Also" column, or choose other free books by O'kane, Walter Collins, B. 1877 to read onlineMoreLess
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