The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 301
... sprays equally as good manufactured elsewhere . For spraying scale insects on dormant , deciduous fruit trees in the winter , the commercial lime - sulphur should be diluted one to nine of water . It is advisable to spray just as early ...
... sprays equally as good manufactured elsewhere . For spraying scale insects on dormant , deciduous fruit trees in the winter , the commercial lime - sulphur should be diluted one to nine of water . It is advisable to spray just as early ...
Страница 304
... spray . This spray has been thoroughly tested by the writer and is one of the cheapest and best for spraying black scale ( Saissetia olea ) or the Euro- pean fruit scale ( Lecanium corni ) on apricot and olive trees . Water ...
... spray . This spray has been thoroughly tested by the writer and is one of the cheapest and best for spraying black scale ( Saissetia olea ) or the Euro- pean fruit scale ( Lecanium corni ) on apricot and olive trees . Water ...
Страница 318
CALIFORNIA SPRAY CHEMICAL COMPANIES . Balfour Guthrie Company , San Francisco , California . Bean Spray Pump Company , San José , California . Braun Corporation , Los Angeles , California . Braun - Knecht - Heimann , San Francisco ...
CALIFORNIA SPRAY CHEMICAL COMPANIES . Balfour Guthrie Company , San Francisco , California . Bean Spray Pump Company , San José , California . Braun Corporation , Los Angeles , California . Braun - Knecht - Heimann , San Francisco ...
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