Wisconsin State Horticultural Society / Annual report of the Wisconsin State Horticultural Society for the year ending July 1, 1921
Vol. LI (1921)
Fluke, Charles L., Jr.
Insects in everybody's garden, pp. 52-56 PDF (1.2 MB)
WISCONSIN STATE HORTICULTURAL SOCIETY 53 for the time at my disposal. The best I can do is to lay down some of the principles and generalizations of insect control. If I were a gardener and knew little about the pests that might attack the various crops in my garden I should have to ask my- self several questions regarding these insects if I would know what remedial measures to use. One of the first questions I would consider is: Does the in- sect on my plants have biting and chewing mouth parts or has it a sucking type? For we know that poisons are applied to those that feed on the tissue of the plants and a contact spray must be used against the sucking forms. Again is the pest accessible or inaccessible; is it a leaf feeder, a stalk borer, a root inhabiting form, or does it feed within or on the fruit? Most leaf feeders and a large part of the fruit infesting forms are accessible and may be killed by the application of a spray. Those forms which attack the roots or bore into the stocks or trunks must be handled in some other manner; and some are termed inaccessible since we know of no method to reach them. We must also know the stage of the insect that is responsible for the damage to our crops; sometimes it is the larval form and in other cases it is both forms. Some insects can be killed only in the egg stage, large numbers are easily checked in their larval or immature stages, while others cannot be killed except in the adult stage. Most everybody's garden contains the common vegetables such as cabbage, potatoes, onions, radishes, cucumbers, tomatoes, beans, peas and corn. If fruits are included we find perhaps some apple and cherry trees; small fruits such as raspberries, currants, and strawberries. Now let me take just a minute or two to discuss only the most important pests of these crops in Wisconsin. What gardener is not familiar with the cabbage worm, the larva of which comes from the white butterflies which flit over his garden most of the summer. This insect, however, need not be the troublesome pest that it is, since any arsenical spray such as lead arsenate or calcium arsenate used at the rate of 2 rounded teaspoonfuls to a gallon with the addition of soap as a spreader, will check its ravages and also without injury to the consumer. The cabbage maggot is held in check by the use of tarred felt --r ---- -- 1-_V,7.11, Zl - - . 1 - I I
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