The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 88
Page 5
... of drill row here were taken at random and examined plant by plant . Forty - eight infested stubs were found , an average of eight to each foot of drill row. THE WESTERN GRASS - STEM SAWFLY . 5 Catoni, L' A Una enfermedad Cocotero.
... of drill row here were taken at random and examined plant by plant . Forty - eight infested stubs were found , an average of eight to each foot of drill row. THE WESTERN GRASS - STEM SAWFLY . 5 Catoni, L' A Una enfermedad Cocotero.
Page 6
... taken from this yard , which would mean more than 1,300,000 larvæ to the acre . Fifty of these stubs were opened and 47 of the imprisoned larvæ that had spent the winter within the straw were found to be normal and very much alive . The ...
... taken from this yard , which would mean more than 1,300,000 larvæ to the acre . Fifty of these stubs were opened and 47 of the imprisoned larvæ that had spent the winter within the straw were found to be normal and very much alive . The ...
Page 9
... taken place , so far as known , only in North Dakota and western Canada , although it is probable that Montana wheat fields have been invaded . From present appearances its attacks probably will be confined to vegetation growing within ...
... taken place , so far as known , only in North Dakota and western Canada , although it is probable that Montana wheat fields have been invaded . From present appearances its attacks probably will be confined to vegetation growing within ...
Page 15
... taken in connection with others that were not so directly conclusive , seems to prove that the porous plug in the stub must prevent in some way the admission of an undue amount of moisture into the chamber below , although water readily ...
... taken in connection with others that were not so directly conclusive , seems to prove that the porous plug in the stub must prevent in some way the admission of an undue amount of moisture into the chamber below , although water readily ...
Page 16
... taken during September , 1912 , and treated in the same manner , contained at least one living larva on February 23 , 1916 , 3 years and 5 months later . The others had nearly all died within about 30 months of the time they were ...
... taken during September , 1912 , and treated in the same manner , contained at least one living larva on February 23 , 1916 , 3 years and 5 months later . The others had nearly all died within about 30 months of the time they were ...
Common terms and phrases
abdominal segment abundant adults alfalfa weevil Allorhina nitida antennae appear apple Arzama Arzama obliqua attack August average bean beet borers burrow cage Calendra cat-tail cent Cephus Cephus cinctus climatic color Cotinis crop curly-leaf dark brown decora deposited disease dorsal early eggs elytra emerged entered soil Entomology experiments feeding female field fig moth figs flowers foliage food plants Galerucella grass ground grubs habits hatched head hibernation hopperburn inches infested injury insect instar Japanese beetle July July 25 killed large number larvæ leaf leafhopper leaves legs length Mesothoracic metathorax molted nymphs oblonga observed occur orchard oviposition parasites period pest Plate potato prepupae prothorax pupa pupal pupation rainfall region rhizome season seeds serghi setae showing Smyrna species specimens spiracles spray spring stage stem sterilized surface temperature third instar thorax trees tubercles Typha latifolia Utah ventral width wings winter writer yellow
Popular passages
Page 4 - If it consists in whole or in part of a filthy, decomposed, or putrid animal or vegetable substance, or any portion of an animal unfit for food, whether manufactured or not, or if it is the product of a diseased animal, or one that has died otherwise than by slaughter. Sec. 8. That the term
Page 9 - ... determine whether or not it is safe and profitable to add 20 per cent more of the lime-sulphur concentrate to a given amount of water, thus increasing the strength of the summer spray to that extent. In 1913 a proprietary spraying material in powder form, known under the trade name of "Soluble Sulphur," was used at the rate of 2 pounds to 50 gallons of water in combination with one pound of dry arsenate of lead. While this material appeared to be quite effective in scab control that season very...
Page 61 - In order that the ecological relationships of the insect fauna of the cat-tail plant may be better understood, the first part of this paper deals with the ecology of the cat-tail plant. In the second part, the life history and biology of the insect inhabitants of the plant are discussed. This part of the paper has been treated from a systematic point of view, considering the insects under their respective orders, rather than grouping them according to their life habits. In the resume", composing...
Page 16 - FH CHITTENDEN, in charge of truck crop and stored product insect investigations. AD HOPKINS, in charge of forest insect investigations. WD HUNTER, in charge of southern field crop insect investigations. FM WEBSTER, in charge of cereal and forage insect investigations. AL QUAINTANCE, in charge of deciduous fruit insect investigations. EF PHILLIPS, in charge nf bee culture.
Page 23 - Sc. D., In Charge of Truck Crop and Stored Product Insect Investigations.