The Shipley Collection of Scientific Papers, Volume 2381920 |
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Results 1-5 of 43
Page 48
... sprays than its relatives and strong solutions are required to kill it . Experiments have shown that a 15 per cent kerosene emulsion must be used . By using a drag to pull the leaves of the beets over and directing the spray at the beet ...
... sprays than its relatives and strong solutions are required to kill it . Experiments have shown that a 15 per cent kerosene emulsion must be used . By using a drag to pull the leaves of the beets over and directing the spray at the beet ...
Page 31
... sprays . Studies were made also of the distance which female beetles may fly in search of trees in which to oviposit ... spraying operation against the codling moth or San Jose scale . Not only does a thorough worming of an orchard rid ...
... sprays . Studies were made also of the distance which female beetles may fly in search of trees in which to oviposit ... spraying operation against the codling moth or San Jose scale . Not only does a thorough worming of an orchard rid ...
Page 37
... spray pump to the trunks of infested apple trees . The treatment was applied to 15 trees that averaged about 4 inches in diameter and contained borers of various ages and sizes . Early during the following spring the borers were removed ...
... spray pump to the trunks of infested apple trees . The treatment was applied to 15 trees that averaged about 4 inches in diameter and contained borers of various ages and sizes . Early during the following spring the borers were removed ...
Page 38
... sprays as a possible means of killing the beetles . In one small - scale experiment six newly emerged beetles were killed by applying a lead- arsenate spray to the foliage of a small apple tree over which they were caged . All died ...
... sprays as a possible means of killing the beetles . In one small - scale experiment six newly emerged beetles were killed by applying a lead- arsenate spray to the foliage of a small apple tree over which they were caged . All died ...
Page 39
destruction of beetles of this species . Such sprays should be applied about 10 days after the blossoms have ... spray will serve also to kill the beetles of the roundheaded apple - tree borer . SUMMARY . The roundheaded apple ...
destruction of beetles of this species . Such sprays should be applied about 10 days after the blossoms have ... spray will serve also to kill the beetles of the roundheaded apple - tree borer . SUMMARY . The roundheaded apple ...
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.