 | Science - 1909 - 748 pages
...recent work on the genus Dendroctonus by Dr AD Hopkins, entitled Tht Ctmts Dendroctonus, and published by the Bureau of Entomology of the United States Department of Agriculture, as Technical series no. 17, part i, has been received too late to be inserted in this list. The treatise... | |
 | Ada Louise Weckel - Science - 1916 - 480 pages
...wood of the tree on which they live. In combating with insects the farmer is assisted and directed by the Bureau of Entomology of the United States Department of Agriculture and by various state experimental stations. The most effective means of control thus far found is by... | |
 | Altus Lacy Quaintance, Edouard Horace Siegler - Fruit - 1918 - 104 pages
...which will not crystallize upon cooling, thus duplicating the commercial product, has been investigated by the Bureau of Entomology of the United States Department of Agriculture, as well as by numerous experiment-station entomologists, notably by Profs. Stewart, Cordley,. Parrott,... | |
 | 1919 - 768 pages
...which will not crystallize upon cooling, thus duplicating the commercial product, has been investigated by the Bureau of Entomology of the United States Department of Agriculture, as well as by numerous experiment-station entomologists, notably by Profs. Stewart, Cordley, Parrott,... | |
 | Nevada. Legislature - 1919 - 1740 pages
...artificial methods of control are practical under the circumstances. The work has been done jointly by the Bureau of Entomology of the United States Department of Agriculture and the Nevada Agricultural Experiment Station. In 1917 an insectary was constructed at Topaz in Antelope... | |
 | Edwy B. Reid - 1919 - 768 pages
...which will not crystallize upon cooling, thus duplicating the commercial product, has been investigated by the Bureau of Entomology of the United States Department of Agriculture, as well as by numerous experiment-station entomologists, notably by Profs. Stewart, Cordley, Parrott,... | |
 | Dwight Sanderson - Beneficial insects - 1921 - 730 pages
...small areas in Texas and Louisiana and being eradicated in that area by vigorous measures prosecuted by the Bureau of Entomology of the United States Department of Agriculture, which also maintains a strict quarantine to prevent the spread, even prohibiting the growing of cotton... | |
 | Charles Lathrop Pack - Trees - 1923 - 366 pages
...insects prevalent within that particular field. Similar work is carried on in even more elaborate fashion by the Bureau of Entomology of the United States Department of Agriculture at Washington. Specific inquiries through either of these channels will bring detailed information... | |
 | Massachusetts Agricultural Experiment Station - Agriculture - 1907 - 1088 pages
...have been in progress for several years, and will be continued. inent of this kind is that now being conducted by the Bureau of Entomology of the United States Department of Agriculture and those in charge of the gypsy moth work in Massachusetts, in importing from the old world the parasitic... | |
 | United States. Bureau of Reclamation - Reclamation of land - 1925 - 306 pages
...project very soon after they are brought under cultivation. Methods of control have been worked out by the Bureau of Entomology of the United States Department of Agriculture in Utah, by the extension service in Idaho, and by joint action of the Bureau of Entomology, the Nevada... | |
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... by the Bureau of Entomology of the United States Department of Agriculture, as well as by numerous experiment-station entomologists, notably by Profs. 
