The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 69
... Maggot , and ( b ) Onion Maggot . Magnified 25 times . From Smith and Dickerson . On account of the burrowing habits of the maggots , it is almost useless to apply insecticides to kill them . Badly infested onions should be lifted and ...
... Maggot , and ( b ) Onion Maggot . Magnified 25 times . From Smith and Dickerson . On account of the burrowing habits of the maggots , it is almost useless to apply insecticides to kill them . Badly infested onions should be lifted and ...
Страница 71
... maggots under his observation " attacked as many as ten bulbs before becoming mature . " He continues : " When one bulb is destroyed they crawl through the soil and enter the next one at its base . " As many as seven or eight young maggots ...
... maggots under his observation " attacked as many as ten bulbs before becoming mature . " He continues : " When one bulb is destroyed they crawl through the soil and enter the next one at its base . " As many as seven or eight young maggots ...
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... maggots , mites , springtails , and sowbugs . Of these the maggots are the most generally injurious , the mites follow in order of importance , owing to the difficulty with which their eradication is accomplished , and then come ...
... maggots , mites , springtails , and sowbugs . Of these the maggots are the most generally injurious , the mites follow in order of importance , owing to the difficulty with which their eradication is accomplished , and then come ...
Чести термини и фразе
abdomen abdominal segment adult antennæ ants aphid Aphis Appearance apple arsenic attacked body breeding brood buds California caterpillars cells cent citrus cocoons colonies color Commissioner cornicles cyanide damage deposited destructive Distribution dorsal early eggs Entomologist erichsonii Essig Family feed femora flies foliage Food Plants fruit fumigation gallons genus green hatch head hibernate History horticultural host inch long infested instabilis ladybird beetle larch Larch Sawfly large numbers larva larvæ lateral leaves legs Linn louse maggots male mealy bug mermithergates mites mosquitoes moth muscles Natural Enemies nest numbers observations Orasema orchards ovipositor P. C. Jr parasites Paris green pest Pheidole plant lice Plate Polyederkrankheit pound pseudogynes pupa pupæ pupal pupate quarantine Raupen sawfly scale insects southern species specimens spiracles spray spring stage summer surface thorax thrips Throughout the entire trees usually ventral winged female winter workers yellow young