Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Philip B, Hamm"'
Autor:
Philip B. Hamm, Stephen C. Alderman, A. Morrie Craig, Jeremiah K. S. Dung, Jeness C. Scott, Jennifer M. Duringer, Kenneth E. Frost, Darrin L. Walenta, Navneet Kaur
Publikováno v:
Phytopathology®. 111:831-841
Ergot, caused by Claviceps purpurea sensu lato, is an economically important seed replacement disease of Kentucky bluegrass (Poa pratensis) and perennial ryegrass (Lolium perenne) seed crops. C. purpurea sensu stricto is considered the primary Clavic
Autor:
Jeremiah K S, Dung, Jennifer M, Duringer, Navneet, Kaur, Jeness C, Scott, Kenneth E, Frost, Darrin L, Walenta, Stephen C, Alderman, A Morrie, Craig, Philip B, Hamm
Publikováno v:
Phytopathology. 111(5)
Ergot, caused by
Autor:
Jeremiah K. S. Dung, Navneet Kaur, Philip B. Hamm, Kenneth E. Frost, Darrin L. Walenta, Stephen C. Alderman
Publikováno v:
Crop Protection. 106:146-149
Ergot, caused by the fungus Claviceps purpurea, is an important seed replacement disease of perennial ryegrass (Lolium perenne L.) grown for seed in the U.S. Pacific Northwest. Current management efforts rely on multiple fungicide applications to pro
Autor:
Charles B. Spinelli, Joshua J. Brungardt, Donald Arthur Horneck, Daniel J. Gadler, Alan E. Bruce, Philip B. Hamm, Robert W. Turner, E. Raymond Hunt
Publikováno v:
Precision Agriculture. 19:314-333
Small unmanned aircraft vehicles (UAV) are potential remote sensing platforms for precision agriculture. However, to be useful for in-season management, nitrogen status needs to be estimated sufficiently early in the growing season. To determine when
Publikováno v:
Plant disease. 82(6)
A regional potato late blight forecasting system for irrigated potatoes in the semiarid environment of the Columbia Basin was expanded by developing specific forecasting models for four vicinities throughout the Basin. Relationships between weather a
Autor:
Philip B. Hamm, George H. Clough
Publikováno v:
Plant disease. 83(5)
The effect of application method by aircraft (fixed wing), ground, and chemigation on deposition of chlorothalonil in a potato canopy was compared over 2 years. Initial chlorothalonil deposition was greatest with ground application, less by aircraft,
Autor:
D. C. Hane, Philip B. Hamm
Publikováno v:
Plant disease. 83(12)
Tuber yield and quality of cv. Russet Norkotah potato plants grown from seed infected with potato leaf roll virus (PLRV) were compared with tuber yield and quality of adjacent plants grown from virus-free seed. Plants from PLRV-infected seed produced
Autor:
R. M. Davis, Robert W. Sandrock, J. S. Miller, Christine D. Smart, T. Y. Lee, William E. Fry, Philip B. Hamm, P. D. Gavino
Publikováno v:
Plant disease. 84(7)
Phytophthora infestans isolates (n = 26) collected in the Columbia Basin of Oregon and Washington in 1993, which had been characterized previously for mating type, metalaxyl sensitivity, and alleles at the glucose-6-phosphate isomerase locus, were an
Publikováno v:
Plant disease. 91(4)
A general mosaic and yellowing of leaves of three cultivars of garlic (Allium sativum L., Late, Early, and Germinador) were observed in two seed-production fields in Morrow County, OR in June 2005. Approximately 50% of plants within the 50-ha fields
Publikováno v:
Plant disease. 91(11)
The Columbia Basin of Oregon consists of six counties (Gilliam, Hood River, Morrow, Sherman, Wasco, and Umatilla) and is the major wheat-producing region in the state. In 2005, these counties produced 300,277 ha of mostly fall-planted wheat. While pr