The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 78
Page 25
... soil in the field might make it easier or harder for adults to emerge than fine soil in a jar , and this point might be difficult to determine . Cultural conditions in North Dakota are not favorable for burying the stubble by plowing ...
... soil in the field might make it easier or harder for adults to emerge than fine soil in a jar , and this point might be difficult to determine . Cultural conditions in North Dakota are not favorable for burying the stubble by plowing ...
Page 7
... soil conditions and lack of mois- ture were contributing causes . The insect referred to was a coccid and the inference was from the large number of lady- beetles present . Townsend ( 1902 ) gave a description of the disease and a ...
... soil conditions and lack of mois- ture were contributing causes . The insect referred to was a coccid and the inference was from the large number of lady- beetles present . Townsend ( 1902 ) gave a description of the disease and a ...
Page 17
... soil adjacent . There was some disease in that year , but no definite record of how much . The next year when the writer visited there late in the season there was said to be less than in the previous year . No beets were grown for the ...
... soil adjacent . There was some disease in that year , but no definite record of how much . The next year when the writer visited there late in the season there was said to be less than in the previous year . No beets were grown for the ...
Page 30
... soil and more sheltered situation which are favorable to its de- velopment , but in several cases it has appeared probable that swarms passing over a region before the beets were up , had been prevented by fogs or storms from passing on ...
... soil and more sheltered situation which are favorable to its de- velopment , but in several cases it has appeared probable that swarms passing over a region before the beets were up , had been prevented by fogs or storms from passing on ...
Page 45
... soil on the feeding roots or even the reaction of the soil temperature on the adja- cent air is not known . Much work along these lines is needed . The most serious and persistent outbreaks of curly - leaf have been in the warmer ...
... soil on the feeding roots or even the reaction of the soil temperature on the adja- cent air is not known . Much work along these lines is needed . The most serious and persistent outbreaks of curly - leaf have been in the warmer ...
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.