INicn ite 
(State) 
Oreg. 
Pas 
ee se 
Blueberry Insect Investigations. To study 8 major insect 
pests and a much larger number of minor pests, any one of 
which could become a serious problem. These include: 
sharp-nosed leafhopper, Scaphytopius magdalensis, Prov.; 
virus-like-conditions of blueberries that may be insect 
transmitted; cherry fruitworm, Grapholitha packardi, Zeller; 
Plum Curculio, Conotrachelus nenuphar, Herbst.; blueberry 
maggot, Rhagoletis pomonella pomonella, Walsh; Putnam scale, 
Aspidiotus ancylus, and crown girdler, unknown sp. 
Ente 202 Coop. ARS 
Biology and Control of the Grape Phylloxera. 
(1) Obtain information on biology and habits of pest under 
conditions in Chautauqua grape belt. (2) Learn if insect 
causes economic damage to Concord grapes. (3) Develop chemical 
controle 
Ent. 6 
Diseases of Small Fruits. 1. Strawberry Viruses. To 
(1) determine possible importance of highly resistant 
varieties such as Rockhill, as natural reservoirs of 
inoculum for susceptible varieties; (2) determine factors 
influencing the expression or masking of virus symptoms; 
(3) determine response of strawberry species (Fragaria 
bracteata, F. ovalis, F. cuneifolia, F. chiloensis, F. vesca), 
and other eiSesigaral related native herbaceous plants (Potentilza 
cilis a anserina, P. glandulosa, Horkelia congesta, Gem 
etc.) when inoculated with strawberry viruses, 
aaa ao icsetion as reservoirs of inocultm: also certain 
other species (Rosa nutkana, Rubus leucodermis, R. laciniatus, 
e idaeus, R. Spey De, Medicago. sativa, etc.); (4) determine 
ae STeniity of inactivation of strawberry viruses by means of 
chemical therapeutics; (5) test varieties and selections 
carrying different components of virus complex for vigor, 
productiveness and longevity under field conditions; 
(6) develop and maintain virus-free foundation stocks of 
chief commercial varieties and unreleased USDA hybrids 
under vector=proof conditions; and (7) determine possibility 
of preventing or slowing spread of strawberry viruses by 
controlling insect vector, Capitophorus fragaefolii (ck.) 
Bote, Ente, Pl. Path. 13 ol g 
Insect Pests of Grapes. To devise methods and evaluate 
materials for chemical control of grape berry moth, grape 
phylloxera and other grape pests. 
Ent., Hort. 1251 
