Spring wheat seed size and seeding rate effects on yield loss due to wild oat (<i>Avena fatua</i>) interference

Stougaard, Robert N.; Xue, Qingwu

doi:10.1614/ws-03-007r1

Cited by 57 publications

(43 citation statements)

References 28 publications

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“…As expected, barley stand density increased while tillers plant −1 decreased at the higher seeding rate (Table 4); but stand density as a function of seeding rate was higher at the lower (68%) compared to the higher (58%) rate. Th is eff ect of seeding rate has been documented previously in barley (Jedel and Helm, 1995) and wheat (Triticum aestivum L.) (Stougaard and Xue, 2004) and is likely due to increased intrarow competition at the higher seeding rates with a subsequent increase in seedling mortality.…”

Section: Effect Of Seeding Ratementioning

confidence: 73%

Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production

O’Donovan

Turkington

Edney³

et al. 2011

Agronomy Journal

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The malting barley (Hordeum vulgare L.) industry is often challenged by the availability of sufficient volume and quality to meet demand. Our objective was to evaluate the effects of agronomic practices on grain uniformity, protein concentration, yield, and yield components. Field experiments were conducted from 2005 to 2008 at eight rain‐fed locations in western Canada. The effects of two seeding rates (200 and 400 seeds m−2) and five N (0, 30, 60, 90, and 120 kg ha−1) rates on two two‐row barley cultivars (‘AC Metcalfe’ and ‘CDC Copeland’) were determined. Each experiment was conducted for 3 yr at each location (24 environments). CDC Copeland displayed some advantages over AC Metcalfe including higher grain yield, lower protein and more uniform kernels. For both cultivars, kernel weight, and plumpness were lower at the higher seeding rate; protein was also lower, maturity was earlier and kernels were more uniform. With increasing N rate, barley yield, kernel weight, and tillers plant−1 increased, but days to seed maturity and protein concentration also increased, and kernel plumpness and seed uniformity decreased. The increase in protein was less pronounced with CDC Copeland suggesting that there may be less risk with this cultivar of unacceptable protein levels at relatively high N rates. At many environments barley plant stand decreased while lodging increased with increasing N rates. To improve the likelihood that barley will be acceptable for malting growers should select low‐protein varieties, seed at relatively high rates and limit N application.

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Section: Effect Of Seeding Ratementioning

confidence: 73%

Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production

O’Donovan

Turkington

Edney³

et al. 2011

Agronomy Journal

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“…Also, the highest kernel yield was achieved with sowing rate 600 germinable seeds m -2 (Kristó et al, 2007;Maric et al, 2008). On the other hand, various sowing rates had highly significant influence on the number of fertile tillers (Khaliq et al, 1999;Chaudhry and Hussain, 2001;Wajid et al, 2004), and that sowing rate influences mainly of number of spikes per square meter, which has the closest relationship to yield from all yield components (Spink et al, 2000;Guberac et al, 2000;Lloveras et al, 2004;Stougaard and Xue, 2004;Guberac et al, 2005;Lithourgidis et al, 2006;Ozturk et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Effect of seeding rate on grain quality of winter wheat

Zečević

Bošković

Knežević³

et al. 2014

Chilean J. Agric. Res.

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Planting density is important factor which influence yield and quality of wheat (Triticum aestivum L.) For this reason, in scientific investigations is constantly investigated optimization of plant number per unit area. The objective of this study was to determine the influence of seeding rate in grain quality of winter wheat cultivars. The experiment was conducted with four winter wheat genotypes ('Ana Morava', 'Vizija', 'L-3027', and 'Perla') at the Small Grains Research Centre of Kragujevac, Serbia, in 3 yr at two seeding rates (SR1 = 500 and SR2 = 650 germinating seeds m -2 ). The 1000-kernel weight, Zeleny sedimentation, and wet gluten content in divergent wheat genotypes were investigated depending on the seeding rate and ecological factors. Significant differences in quality components were established between investigated seeding rates. The highest values of all investigated quality traits were established in SR2 variant when applied 650 seeds m -2 . Genotypes reacted differently to seeding rate. 'Perla' in average had the highest mean sedimentation value (42.2 mL) and wet gluten content (33.76%) in SR2 variant and this cultivar responded the best to seeding rate. Significant differences for sedimentation value and wet gluten content were found among cultivars, years, seeding rate, and for all their interactions. Also, ANOVA for 1000-kernel weight showed highly significant differences among investigated varieties, seeding rate and growing seasons, but all their interactions were not significant. In all investigated genotypes, better quality was established in SR2 variant when applied 650 seeds m -2 .

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“…High seeding density has been reported to improve grain yield of wheat under conventional cropping systems (Conventry et al, 1993;Rurnett et al, 2003). Stougaard and Xue (2003) found that high seeding density increased yield 12%-18% when compared with low seeding density in Montana. Work in Canada showed that a 60 kg ha −1 seeding rate resulted in a 61% higher plant density than a 30 kg ha −1 seeding rate (McLeod et al, 1995).…”

Section: Seeding Densitymentioning

confidence: 91%

Mid-Season Prediction of Wheat-Grain Yield Potential Using Plant, Soil, and Sensor Measurements

Girma

Martin

Anderson

et al. 2006

Journal of Plant Nutrition

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The components that define cereal-grain yield potential have not been well defined. The objective of this study was to collect many differing biological measurements from a long-term winter wheat (Triticum aestivum L.) study in an attempt to better define yield potential. Four treatments were sampled that annually received 0, 45, 90, and 135 kg N ha −1 at fixed rates of phosphorus (P) (30 kg ha −1 ) and potassium (K) (37 kg ha −1 ). Mid-season measurements of leaf color, chlorophyll, normalized difference vegetative index (NDVI), plant height, canopy temperature, tiller density, plant density, soil moisture, soil NH 4 -N, NO 3 -N, organic carbon (C), total nitrogen (N), pH, and N mineralization potential were collected. In addition, soil texture and bulk density were determined to characterize each plot. Correlations and multiple linear-regression analyses were used to determine those variables that can predict final winter wheat grain yield. Both the correlation and regression analyses suggested mid-season NDVI, chlorophyll content, plant height, and total N uptake to be good predictors of final winter wheat grain yield. Keywords

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Spring wheat seed size and seeding rate effects on yield loss due to wild oat (Avena fatua) interference

Cited by 57 publications

References 28 publications

Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production

Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production

Effect of seeding rate on grain quality of winter wheat

Mid-Season Prediction of Wheat-Grain Yield Potential Using Plant, Soil, and Sensor Measurements

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