Journal of Economic Entomology, Volume 11Entomological Society of America, 1918 |
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Page 51
... killed by " Scalecide " ( a miscible oil ) and " Fly- skat " ( a creosote compound ) . All eggs were sprayed within five days after they were deposited . In the following experiments no material was sufficiently effective to consistently ...
... killed by " Scalecide " ( a miscible oil ) and " Fly- skat " ( a creosote compound ) . All eggs were sprayed within five days after they were deposited . In the following experiments no material was sufficiently effective to consistently ...
Page 52
... killed to warrant the statement that this material might kill eggs . It was thought , when the material was used , that it might act as a stom- ach poison and kill the larva as it ate ( apparently ) its way out of the shell , but as ...
... killed to warrant the statement that this material might kill eggs . It was thought , when the material was used , that it might act as a stom- ach poison and kill the larva as it ate ( apparently ) its way out of the shell , but as ...
Page 53
... kill the larva before it enters the tree or prevent it from getting into the tree . The develop- ment of any control measure along the line of killing the larva after it enters the tree is not advisable . PRESIDENT R. A. COOLEY : Mr ...
... kill the larva before it enters the tree or prevent it from getting into the tree . The develop- ment of any control measure along the line of killing the larva after it enters the tree is not advisable . PRESIDENT R. A. COOLEY : Mr ...
Page 59
... killing agent as do the corre- sponding pure lead salts . Theoretically then for spraying purposes only one - half as much calcium arsenate is required as of the lead arsenate . This point requires more elaborate experimentation ...
... killing agent as do the corre- sponding pure lead salts . Theoretically then for spraying purposes only one - half as much calcium arsenate is required as of the lead arsenate . This point requires more elaborate experimentation ...
Page 62
... Killing Efficiency of the Arse- nates . Jour . Agric . Research , X , No. 4 , p . 199 . 5. DESELLEM , F. E. 1916. Calcium Arsenate . Ann . Rept . Hort . Dept. , 1916 , Yakima Co. , Wn . , p . 45 . PRESIDENT R. A. COOLEY : This ...
... Killing Efficiency of the Arse- nates . Jour . Agric . Research , X , No. 4 , p . 199 . 5. DESELLEM , F. E. 1916. Calcium Arsenate . Ann . Rept . Hort . Dept. , 1916 , Yakima Co. , Wn . , p . 45 . PRESIDENT R. A. COOLEY : This ...
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A. F. BURGESS abundant adults Agricultural College Agricultural Experiment Station antennæ aphids Aphis appear apple arsenate of lead ASSOCIATION OF ECONOMIC August average bait beetles Bureau of Entomology cages calcium arsenate canker cent chinch-bugs codling moth color committee coöperation county agents Crataegus crop insects dead Larvæ deposited disease ECONOMIC ENTOMOLOGISTS effect emerged extension Federal Horticultural Board feeding female field foliage fruit fumigation grain grasshoppers hatched Hessian fly hibernating Horticultural important infested injury insectary insecticides investigations July June killed large numbers larva larvæ Larvæ dead lead arsenate length life-history Mass material Melrose Highlands methods molasses moth nicotine nursery stock nymphs observed Ohio orchard oviposition paper parasite Paris green pest placed plants poison PRESIDENT R. A. COOLEY pupa puparia pupation reared records season species spray stage tests tion trees U. S. Bureau Vice-President Washington wheat writer