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  • Springer  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Competitive Ability in Mixtures of Small Grain Cereals (2000)
    Springer
    Crop science 40 (2000), S. 159-164 
    Details
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Hordeum vulgare L.), oat (Avena sativa L.), triticale (×Triticosecale rimpaui Wittm.), and rye (Secale cereale L.) grown as monocrops and mixtures. Seeding rates ranging from 250 seeds m−2 to 750 seeds m−2 were evaluated to determine their effect on competitive ability of genotypes and species of small grains. Differences in competitive ability were found. The semi-dwarf barley `Kasota' was less competitive than the standard-height `AC Lacombe' and `Seebe'. `Noble' barley was more competitive than `AC Mustang' oat or `Wapiti' triticale. `Prima' winter rye was more competitive than `Pika' winter triticale. Relative grain yields were generally not different than 1.0 g g−1, but when significantly different they were usually higher than one, indicating that the yields of those mixtures were better than expected based on yields when the cultivars were grown as pure stands. Seeding rates had little effect on competitive ability. The specific factors that lead to better than expected grain yields of mixtures and to good competitive ability of cultivars and species are difficult to predict and must be evaluated on a case-by-case basis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 2
    Electronic Resource
    Electronic Resource
    Forage Yield and Quality for Monocrops and Mixtures of Small Grain Cereals (2000)
    Springer
    Crop science 40 (2000), S. 138-147 
    Details
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Hordeum vulgare L.), oat (Avena sativa L.), triticale (×Triticosecale rimpaui Wittm.), and rye (Secale cereale L.) grown as monocrops or in various mixtures. Seeding rates ranged from 250 to 750 seeds m−2. Harvest times were based on the maturity of the principal cereal in each mixture. Few effects of seeding rate on yield or quality were found, but when effects were found, higher seeding rates were associated with higher yields, lower moisture content, and higher fiber content. All treatments produced high quality forage as measured by neutral detergent fiber (NDF), from 515 g kg−1 for early-harvested tests to 656 g kg−1 for late-harvested tests, and acid detergent fiber (ADF) contents, from 310 g kg−1 for early-harvested tests to 387 g kg−1 for late-harvested tests. Protein was low, ranging from 61.5 to 101.0 g kg−1. Biomass yields ranged from 10.1 to 16.5 Mg ha−1 in the barley cultivar tests, 7.0 to 18.5 Mg ha−1 in the spring cereal tests, and 10.8 to 12.2 Mg ha−1 in the winter cereal tests. Although, some exceptions occurred, forage yield and quality of cereal mixtures were generally intermediate to monocrop production, especially for moisture and fiber content, suggesting that planting species mixtures could extend the harvest period and result in higher-quality silage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 3
    Electronic Resource
    Electronic Resource
    Postheading Biomass Distribution for Monocrops and Mixtures of Small Grain Cereals (2000)
    Springer
    Crop science 40 (2000), S. 148-158 
    Details
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Hordeum vulgare L.), oat (Avena sativa L.), triticale (×Triticosecale rimpaui Wittm.), and rye (Secale cereale L.) grown as monocrops and mixtures. Seeding rates ranging from 250 to 750 seeds m−2 were evaluated to determine their effects on biomass distribution from heading to the soft-dough growth stages. While seeding rate had a profound effect on per plant biomass, it had little effect on biomass per unit land area or the distribution of the biomass between leaves, stems, and spikes. During the postheading period for all tests, the leaf component declined and the spike component increased. The stem component declined for all tests, but variation was found for the tests harvested on the basis of the oat and triticale components. Composition biomass weights from our spring cereal tests averaged across the three sampling times (heading to soft dough) were 18% leaf, 50% stem, and 31% head for `Noble' barley; 18% leaf, 44% stem, and 37% head for `AC Mustang' oat; and 22% leaf, 43% stem, and 35% head for `Wapiti' triticale. Plant populations and total, leaf, stem, and spike biomass per plant for mixtures were found to be intermediate to the monocrops. Total biomass quantity and distribution among leaves, stems, and spikes were affected by genotype, production practices, and time of harvest, with the latter having the greatest effect. Understanding cultivar, species, and management effects is important for optimum feed quantity and quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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