Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains

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Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains

Brian L. Beres [et al.] - Nama Orang;

The inclusion of winter cereals in spring-annual rotations in the northern Great Plains may reduce weed populations and herbicide requirements. A broad range of spring and winter cereals were compared for ability to suppress weeds and maximize grain yield at Lacombe (2002 to 2005) and Lethbridge (2003 to 2005), Alberta, Canada. High seeding rates (≥ 400 seeds/m2) were used in all years to maximize crop competitive ability. Spring cereals achieved high crop-plant densities (> 250 plants/m2) at most sites, but winter cereals had lower plant densities due to winterkill, particularly at Lethbridge in 2004. All winter cereals and spring barley were highly effective at reducing weed biomass at Lacombe for the first 3 yr of the study. Weed suppression was less consistently affected by winter cereals in the last year at Lacombe and at Lethbridge, primarily due to poor winter survival. Grain yields were highest for spring triticale and least for spring wheat at Lacombe, with winter cereals intermediate. At Lethbridge, winter cereals had higher grain yields in 2003 whereas spring cereals had higher yields in 2004 and 2005. Winter cereals were generally more effective at suppressing weed growth than spring cereals if a good crop stand was established, but overlap in weed-competitive ability among cultivars was considerable. This information will be used to enhance the sustainable production of winter and spring cereals in traditional and nontraditional agro-ecological zones.

Nomenclature: Barley, Hordeum vulgare L.; triticale, 3 Triticosecale W.; wheat, Triticum aestivum L.

Key words: Crop rotation, cultural weed control, integrated weed management, wheat, barley, triticale, rye.

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Informasi Detail

Judul Seri: Weed Technology
No. Panggil: -
Penerbit: New York : Weed Science Society America., 2010
Deskripsi Fisik: Weed Technology 2010 24:108–116
Bahasa: English
ISBN/ISSN: DOI: 10.1614/WT-D-09
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: 24, April–June 2010
Subjek: PERTANIAN.
ILMU GULMA
Info Detail Spesifik: -
Pernyataan Tanggungjawab: agus

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