Seeding arrangement on winter wheat (Triticum aestivum) grain yield and interaction with Italian ryegrass (Lolium multiflorum)

Studies were conducted to determine whether cross-seeding of winter wheat, while maintaining an equal seeding rate per hectare, would increase wheat grain yields and help the wheat compete more effectively against Italian ryegrass than conventional seeding. Wheat was seeded at rates of 50, 100, and...

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Bibliographic Details
Published in:Weed technology 1992-10, Vol.6 (4), p.820-823
Main Authors: Appleby, A.P, Brewster, B.D
Format: Article
Language:English
Subjects:
Agriculture
Agronomy
Agronomy. Soil science and plant productions
APPLICATION EN LIGNE
Biological and medical sciences
BIOLOGICAL COMPETITION
CANTIDAD DE SEMILLA REQUERIDA
COMPETENCIA BIOLOGICA
COMPETITION BIOLOGIQUE
CONTROL CULTURAL
CROP YIELD
cross drilling
CULTIVOS DE INVIERNO
CULTURAL CONTROL
CULTURE D'HIVER
DENSITE DE SEMIS
DESHERBAGE
DRILLING
ESCARDA
Fundamental and applied biological sciences. Psychology
Generalities, botany, ecology, damages, economic importance
Grains
Herbicides
Leaves
Life Sciences & Biomedicine
LOLIUM MULTIFLORUM
LUTTE CULTURALE
MALEZAS
MAUVAISE HERBE
OPERACION DE CULTIVO EN LINEAS
OREGON
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
Plant Sciences
Planting
Plants
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
Row spacing
Science & Technology
Seeding
Seeds
SOWING RATES
TRITICUM AESTIVUM
WEED CONTROL
WEEDS
Wheat
WINTER CROPS
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Summary:Studies were conducted to determine whether cross-seeding of winter wheat, while maintaining an equal seeding rate per hectare, would increase wheat grain yields and help the wheat compete more effectively against Italian ryegrass than conventional seeding. Wheat was seeded at rates of 50, 100, and 150 kg ha-1in conventional parallel rows or cross seeded in a grid pattern. Ryegrass was seeded at densities of 0, 20, 100, and 200 plants per m-2. Cross-seeded wheat yielded less grain than single-seeded wheat in 1990 in the absence of ryegrass; there were no differences in 1991. Cross seeding did not reduce competition from Italian ryegrass. Ryegrass was highly competitive against wheat, especially in 1990. Even 20 plants per m-2reduced grain yield by an average of 38%. Wheat seeding rate had essentially no effect on grain yield in 1990, but the higher seeding rates reduced yields in 1991 because of extensive lodging. In 1991, wheat grain yields were higher in the cross-seeded plots than the single-seeded plots at the two high wheat seeding rates and highest ryegrass densities. Cross seeding does not appear promising as an aid to controlling ryegrass in Pacific Northwest wheat.
ISSN:0890-037X
1550-2740
DOI:10.1017/S0890037X00036320