Full TGIF Record # 503
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Web URL(s):https://dl.sciencesocieties.org/publications/aj/pdfs/74/6/AJ0740060964
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Publication Type:
i
Refereed
Author(s):Morrow, L. A.; Canode, C. L.
Author Affiliation:Morrow: Research Agronomist; Canode: Former Research Agronomist, Agricultural Research Service, United States Department of Agriculture, Washington State University, Pullman, Washington
Title:First crop seed yield of selected cool-season grasses as influenced by weed control
Source:Agronomy Journal. Vol. 74, No. 6, November/December 1982, p. 964-966.
Publishing Information:Madison, WI: American Society of Agronomy
# of Pages:3
Keywords:TIC Keywords: Seed yield; Cool season turfgrasses; Weed control; Panicum capillare; Poa secunda; Agropyron; Festuca ovina subsp. duriuscula; Bromus inermis; Bromoxynil; MSMA
Abstract/Contents:"Perennial grass grown for seed is an important part of the economy of Pacific Northwest agriculture, both as a crop and as an integral part of the rotation practices for control of soil erosion. Annual weeds are often difficult to control and extremely damaging to grass seedlings in the year of stand establishment. A 3-year field study was conducted on a Palouse soil (fine-silty, mixed, mesic pachic Ultic Haploxerolls) to determine the influence of control of witchgrass (Panicum capillare L.) and annual broadleaf weeds in the year of establishment on first seed crop yield of 'Sherman' big gluegrass (Poa ampla Merv.), 'Whitmar' bluebunch wheatgrass [Agropyron inerme (Scribn. and Smith) Rydb.], 'Durar' hard fescue (Festuca ovina var. duriuscula (L.) Koch.], 'Pennlawn' red fescue (Festuca rubra L.), and 'Manchar' smooth brome (Bromus inermis Leyss.). Bromoxynil (3,5dibromo-4-hydroxybenzonitrile) was applied to these grasses at 0.56, 1.12, or 1.68 kg/ha at the single leaf stage and MSMA (monosodium methanearsonate) was applied at 3.36, 4.48, 5.60, or 6.72 kg/ha when perennial grasses had five tillers and witchgrass was at the four- to eight-tiller stage of development. Bromoxynil applied at 0.56 kg/ha controlled annual broadleaf weeds and, except for red fescue, there was no effect from increased bromoxynil rates on first crop seed yields. Pennlawn red fescue yield was increased with 1.68 kg/ha bromoxynil. Applications of MSMA generally increased grass seed yields because witchgrass was controlled. Except for smooth brome, control of witchgrass and annual broadleaf weeds aided grass seedling establishment and increased first crop seed yield. Apparently, the larger-seeded grasses such as smooth brome have the ability to establish rapidly and to effectively compete with annual weeds."
Language:English
References:4
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Morrow, L. A., and C. L. Canode. 1982. First crop seed yield of selected cool-season grasses as influenced by weed control. Agron. J. 74(6):p. 964-966.
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https://dl.sciencesocieties.org/publications/aj/pdfs/74/6/AJ0740060964
    Last checked: 12/08/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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