The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 65
... green than any of the succeeding broods . In seeking food they work into the newly opening buds and on the first tender leaves . Due to their small size they can scarcely be noticed except by very careful observation . They seek the ...
... green than any of the succeeding broods . In seeking food they work into the newly opening buds and on the first tender leaves . Due to their small size they can scarcely be noticed except by very careful observation . They seek the ...
Страница 65
... green lice , completely covered with fine white powder , which makes them appear silvery - gray ; length , 3 to 4 mm . Life History . - The lice appear in the spring , soon after the lupines are well started , and are especially ...
... green lice , completely covered with fine white powder , which makes them appear silvery - gray ; length , 3 to 4 mm . Life History . - The lice appear in the spring , soon after the lupines are well started , and are especially ...
Страница 299
... green is mixed as follows : Paris green Air - slaked lime . 5 ounces 1 pound The Paris green and lime are thoroughly powdered , mixed and dusted upon the plants through a muslin bag or by means of a blower . In combination with Bordeaux ...
... green is mixed as follows : Paris green Air - slaked lime . 5 ounces 1 pound The Paris green and lime are thoroughly powdered , mixed and dusted upon the plants through a muslin bag or by means of a blower . In combination with Bordeaux ...
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