. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. Fig. 8. The Cabbage Maggot. Radish showing egg. winter also as adult flies, hibernating in sheltered nooks about the field and in outbuildings. As the warm days of spring advance, the flies emerge from their hibernating quarters and also from the pupal cases in the soil, and seek their host plants for the purpose of egg deposi- tion. The eggs are
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. Fig. 8. The Cabbage Maggot. Radish showing egg. winter also as adult flies, hibernating in sheltered nooks about the field and in outbuildings. As the warm days of spring advance, the flies emerge from their hibernating quarters and also from the pupal cases in the soil, and seek their host plants for the purpose of egg deposi- tion. The eggs are deposited close about the plant, the female fly working herself down below the surface, if the soil will permit, and placing the egg right against the plant root (see Pig. 3). The eggs are often placed above ground on leaves or developing buds. The eggs hatch in from four to ten days, depending on the tem- perature, and the young larvae commence at once to burrow into the tender plant (see Pig. 2). The maggots reach matur- ity in a month to six weeks, pupate and emerge soon after as adult flies. From. Pig. 4. J Cabbage Maggot Adult. —Photo by Essig. this time on until late fall one may usu- ally find both larvae and pupae in the soil. As the season advances, a portion of the maggots assume an aerial habit. This is especially true in the fields when early cabbage has been harvested and where the stumps left standing have put out adventitious buds. The flies deposit eggs in these tender buds and the mag- gots burrow into the midribs of the leaves and into the core of the shoots. Control Measures Possibly for no other group of insects will one find such a variety of remedial measures suggested as for the root mag- gots, nor more diverse results following their application. No single remedial measure will ordinarily afford satisfac- tory relief. Combinations of preventive and remedial measures are best. A single application of any solution will seldom suffice; hence the crop sho
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Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectgardening
