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You searched for: Journal Weed science Remove constraint Journal: Weed science Publication Year 2002 Remove constraint Publication Year: 2002 Source 2002 v.50 no.5 Remove constraint Source: 2002 v.50 no.5 Text Availability Full Text Remove constraint Text Availability: Full Text
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1. Common waterhemp (Amaranthus rudis) interference in soybean

Author:
Hager, Aaron G.; Wax, Loyd M.; Stoller, Edward W.; Bollero, Germáán A.
Source:
Weed science 2002 v.50 no.5 pp. 607
ISSN:
0043-1745
Subject:
Amaranthus; Glycine max; crop-weed competition; plant development; weed control; field experimentation; duration; leaves; seed productivity; Illinois
Abstract:
... Common waterhemp has become a problem weed species in Midwest soybean production. Determining the critical interference period after soybean and common waterhemp emergence is necessary for the implementation of weed control practices before soybean seed yield loss occurs. Field experiments were conducted during 1996, 1997, and 1998 to determine the influence of duration of common waterhemp interfe ...
Handle:
10113/14489
DOI:
10.1614/0043-1745(2002)050[0607:CWARII]2.0.CO;2

2. Differential sensitivity of Italian ryegrass (Lolium multiflorum) cultivars to fenoxaprop

Author:
Hassan, Gul; Mueller-Warrant, George; Griffith, Stephen
Source:
Weed science 2002 v.50 no.5 pp. 567
ISSN:
0043-1745
Subject:
Lolium multiflorum; cultivars; fenoxaprop; seed set; herbicide resistance; seedlings; screening; developmental stages; plant development; tillering; ligases; enzyme inhibitors; seed productivity; application rate; biological resistance
Abstract:
... Several seed production fields of the Italian ryegrass cultivar ‘‘Tetrone’’ were destroyed in 1988 by 280 to 350 g ai ha⁻⁻¹ racemic fenoxaprop applied for wild oat control. Because similar rates of fenoxaprop had possessed adequate safety when applied to ‘‘Oregon common’’ Italian ryegrass, suspicion arose that the cultivars differed in tolerance. Seedlings of 21 commonly grown cultivars were scree ...
Handle:
10113/14487
DOI:
10.1614/0043-1745(2002)050[0567:DSOIRL]2.0.CO;2

3. Spatial dependence of weed seed banks and strategies for sampling

Author:
Wiles, L.; Schweizer, E.
Source:
Weed science 2002 v.50 no.5 pp. 595
ISSN:
0043-1745
Subject:
weeds; botanical composition; density; spatial distribution; sampling; prediction; corn; fields; spatial variation; Colorado
Abstract:
... Weed management could be more efficient and require less herbicide if growers could afford to estimate the composition, density, and distribution of weed seed banks. Spatial distribution of a weed seed bank will affect the accuracy of both mean estimates and interpolated maps of density. Consequently, information about the general characteristics of spatial distributions of seeds in a seed bank is ...
Handle:
10113/14488
DOI:
10.1614/0043-1745(2002)050[0595:SDOWSB]2.0.CO;2