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Differential transmission of strawberry mottle virus by Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell)

Creator:: Eulensen, Gustav Egon
Abstract:: The transmission of strawberry mottle virus (SMV) to Fragaria vesca L. by Chaetosiphon thomasi and C. fragaefolii was studied to determine differences between the two species. Acquisition, inoculation, and retention phases of transmission were described. In all phases, C. fragaefolii was found to be the more efficient vector. Mean transmission...
Resource Type:: Masters Thesis
Full Text:: . Plant Disease Reporter, 52: 64-67. Frazier, N. W. and A. F. Posnette. 1958. Relationships of the straw

Inheritance of resistance to head smut disease in maize (Zea mays L.)

Creator:: Akhtar, Ali
Resource Type:: Dissertation
Full Text:: heritability 29 IV. RESULTS AND DISCUSSION 30 Incidence of head smut disease 30 Effect of clipping on

Biology, distribution and economic threshold of the strawberry root weevil, Otiorhynchus ovatus (L.), in peppermint

Creator:: Cacka, Joseph Francis
Resource Type:: Masters Thesis
Full Text:: starving weevils to avoid a concentration of the pest (Downes 1927, Mote and Wilcox 1927, Lovett 1913

Sampling methods and injury thresholds for western spotted cucumber beetle in snap beans

Creator:: Weinzierl, Richard Alan
Resource Type:: Dissertation
Full Text:: production, pest biology, or sampling and pest management in general. The review presented here provides

Inheritance of Septoria leaf blotch resistance and the possible influence of heading date and plant height on the disease expression in a winter wheat cross

Creator:: Camacho Casas, Miguel Alfonso
Abstract:: Parental lines, Fi's and segregating populations (F₂, F₃ and BC's) including reciprocals were evaluated under field conditions to determine if genetic resistance per se exists for Septoria Leaf Blotch in a selected winter wheat cross. The experiment was conducted over a three year period with both natural infection and artificial...
Resource Type:: Dissertation
Full Text:: possible influence of heading date and plant height on the disease expression in a winter wheat cross AN

Biology and management of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), in sweet cherry

Creator:: Omeg, Michael Kent
Abstract:: The seasonal biology of the obliquebanded leafroller, Choristoneura rosaceana (Harris), was studied to improve its management in Mid-Columbia area sweet cherry orchards. Overwintering OBLR larvae began to emerge from hibernacula at bud stage 2 (side green). Most overwintering larvae emerged from hibernacula within three weeks of first bud swell and...
Resource Type:: Masters Thesis
Full Text:: the United States and southern Canada (Chapman and Lienk 1971). OBLR is a pest in many cropping

Assessment of black vine weevil larval damage to cranberries and development of alternative control strategies

Creator:: Miller, Elizabeth A. (Elizabeth Ann)
Abstract:: Black vine weevil (BVW), Otiorhynchus sulcatus Fabricius, is a serious pest in cranberry, Vaccinium macrocarpon. Larvae feeding below the soil surface cause damage to the roots and underground stems. Knowledge is sparse in regard to the damage potential of BVW in Pacific Northwest cranberry beds. Control with insecticides is limited...
Resource Type:: Masters Thesis
Full Text:: address the pest status of BVW in Pacific Northwest cranberries as well as its biology and life cycle

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

Creator:: David, Nicholas L.
Abstract:: Field trials were conducted during 2001 to 2003 to investigate soil population dynamics of Meloidogyne chitwoodi, tuber symptom suppression using oxamyl, and post-harvest tuber symptom development on short-season potato varieties Russet Norkotah and Russet Nugget (San Luis Valley only). The experiments were located in the San Luis Valley in Colorado,...
Resource Type:: Dissertation
Full Text:: vitro tests. Plant Disease 73:957-959. Brown, C.R., H. Mojtahedi, and G.S. Santo. 1991. Resistance

Modifying selected factors to classify levels of resistance or tolerance in wheat to Septoria Tritici Blotch

Creator:: Re, Jose Vicente
Abstract:: Influence of abiotic and biotic factors were examined in selected winter wheats previously identified as representing a range of responses to septoria infection. In the greenhouse two and three inoculations identified resistance when disease severity was assessed either for the top four leaves or the flag leaf respectively. Kernel number...
Resource Type:: Dissertation
Full Text:: inoculation and disease severity assessed at the top four leaves identified resistance in the field

Interactions of Amphorophora agathonica Hottes with raspberry viruses and resistant red and black raspberry

Creator:: Lightle, Danielle
Abstract:: In recent years, red raspberry production in Washington and British Columbia has been severely limited by a newly emerged virus complex that causes symptoms of crumbly fruit. The complex is comprised of three viruses: Raspberry bushy dwarf virus (RBDV), Raspberry leaf mottle virus (RLMV) and Raspberry latent virus (RpLV). Both...
Resource Type:: Dissertation
Full Text:: complexes, including black raspberry decline in black raspberry and raspberry crumbly fruit disease in red

ScholarsArchive@OSU

Differential transmission of strawberry mottle virus by Chaetosiphon thomas Hille Ris Lambers and Chaetosiphon fragaefolii (Cockerell)

Inheritance of resistance to head smut disease in maize (Zea mays L.)

Biology, distribution and economic threshold of the strawberry root weevil, Otiorhynchus ovatus (L.), in peppermint

Sampling methods and injury thresholds for western spotted cucumber beetle in snap beans

Inheritance of Septoria leaf blotch resistance and the possible influence of heading date and plant height on the disease expression in a winter wheat cross

Biology and management of the obliquebanded leafroller, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), in sweet cherry

Assessment of black vine weevil larval damage to cranberries and development of alternative control strategies

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

Modifying selected factors to classify levels of resistance or tolerance in wheat to Septoria Tritici Blotch

Interactions of Amphorophora agathonica Hottes with raspberry viruses and resistant red and black raspberry

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