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Creator:: Calabro, Jill M.
Abstract:: The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...
Resource Type:: Dissertation
Full Text:: 1.3 Disease cycle of sweet cherry powdery mildew………...8 1.4 Disease forecasting and control

Creator:: Wilks, Jack Morton
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . e e . . . . . s . e . e il Sweet cherry foliage indicator varieties........... 13 Lambsrt and

Creator:: Bolwyn, Bart
Abstract:: A disease of sweet cherry (Prunus avium L.) known as "cherry rosette" has threatened production of cherries in Oregon. In 1961 this disease was observed in widely separated orchards. Rosette occurred in isolated trees or in spreading patterns, often from identified single trees or from one section of an orchard....
Resource Type:: Dissertation
Full Text:: DISEASE IN OREGON, AND THE POSSIBLE IMPLICATION OF A VIRUS INTRODUCTION The disease of sweet cherry

Creator:: Gashaira, Bashir
Resource Type:: Dissertation
Full Text:: . Aspects of the Disease Cycle of Brown Rot on Sweet Cherry 14 MATERIALS AND METHODS 20 I. A. Disease

Creator:: Hoinacki, Elisabeth V.
Abstract:: For the past several years vegetable growers in Oregon's Willamette Valley have experienced reduced yields in their sweet corn plantings. We conducted studies to 1) describe the symptomology and etiology of the disease, 2) test a root rot rating system we developed to evaluate factors in the disease syndrome, and...
Resource Type:: Dissertation
Full Text:: severity of root rot of sweet corn, indicating that the primary cause of the disease is soilborne and

Creator:: Miller, Nathan L. (Nathan Louis)
Abstract:: Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...
Resource Type:: Dissertation
Full Text:: conductance, and disease in crown and node tissues of sweet corn grown in the Willamette Valley

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