Zobrazeno 1 - 10
of 60
pro vyhledávání: '"R. D. Reeleder"'
Publikováno v:
Canadian Journal of Plant Science. 90:515-528
To identify practices that minimize the risk of NO3-N leaching to groundwater from high-value crops produced on coarse-textured soil, NO3-N movement was determined from varied water (overhead vs. drip irrigation) and nutrient (pre-plant broadcast vs.
Publikováno v:
Canadian Journal of Plant Science. 88:937-949
Ginseng root value varies with shape. To increase understanding of factors affecting root shape and growth, we conducted a 4-yr field experiment with three planting bed shapes with and without straw mulch cover, and 3-yr duplicate experiments with va
Publikováno v:
Canadian Journal of Plant Pathology. 29:427-436
Roots of American ginseng (Panax quinquefolius) are common ingredients in herbal medicines, and Pythium species are known to cause damping-off and root rot of ginseng seedlings. The impact of preplant fumigation and mefenoxam application on populatio
Publikováno v:
Canadian Journal of Plant Science. 87:373-381
Responses of ginseng to drip irrigation regimes and organic mulches were determined in two experiments beginning in 1998 and 1999. Treatments were four soil water content thresholds for irrigation: 0, 0.08, 0.12 and 0.16 m3 m-3 (θ0, θ8, θ12, and
Publikováno v:
Plant Pathology. 56:508-516
− 1 dried soil. A principal components analysis did not show any strong relationships between soil chemistry factors and the concentration of pathogen DNA. The approach outlined here allows the quantification of current populations of CDP in soil m
Publikováno v:
Applied Soil Ecology. 33:243-257
The impacts of tillage regime, cover crop, and nitrogen on various soil organisms inhabiting a fragile sandy soil (Brunosolic Gray Brown Luvisol) were determined. Soil samples were collected between 2000 and 2003 from a long-term tillage experiment,
Publikováno v:
HortScience. 40:138-141
Field experiments over 2 years were used to determine the effect of ethephon on: plant growth, weight of berries, proportion of red, green and immature berries, and root weight (economic yield) of 3-year-old north american ginseng plants (Panax quinq
Publikováno v:
Canadian Journal of Plant Science. 83:955-958
A system for classifying the dried roots of ginseng by shape was developed using roots from 3- and 4-yr-old plantings. The method is based on traditional preferences in the marketplace and allows for the separation of desirable roots (chunk or forked
Autor:
R. D. Reeleder
Publikováno v:
Canadian Journal of Soil Science. 83:331-336
The role of biodiversity as it affects the control of soil-borne fungal pathogens is discussed. Soil-borne fungal plant pathogens have often proven difficult to manage with conventional methods of disease control. Nonetheless, researchers have charac
Publikováno v:
Journal of Herbs, Spices & Medicinal Plants. 7:65-76
Field trials were established to determine the effects of fungicide treatment and seeding density on yield and ginsenoside concentration in roots of ginseng (Panax quinquefolius L.). The application of the fungicides metalaxyl and fosetyl-Al had no e