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June 2017 Page 21 •

Delayed seeding reduced yield and increased protein concentration. But Seeding date had few effects on barley quality.

Seeding rate of 300 seeds /m2 (27.7 seeds / Sq. ft.) usually resulted in higher kernel yield with more uniform kernels and lower protein concentration, kernel weight and plumpness than seeding at lower rates.

Compared to lower seeding rate, 300 seeds /m2 usually showed improved germination, Kolbach index, alpha-amylase, friability modification and friability homogeneity, had no effect on distatic power, and lowered beta-glucon level. Seeding malting barley relatively early at 300 seeds /m2 has potential to optimize both quality and yield plus acceptability for malting grade.

Two cycles of treatments were monitored (20092010 and 2010-2011) using dry matter production and nitrogen nutrition index using ion exchange membranes.

Mid-Sept. application treatments were clipped in May, July and Sept.; Early June application treatments were clipped in July and Sept.; and Early July summer application treatments were clipped in Sept.

Timothy dominated sward on a clay and a sandy soil received 4 treatments (Control, Dung @ 1.75 kg fresh weight / m2, Diluted urine @ 50 g N / m2 and Urine @ 100 g N / m2) at different times.

Nitrogen uptake by the crop clippings was greater from urine (8-28%) than dung (312%) on both soil types.

Applied N was available to timothy for all application times, and being greater from urine than dung.

Positive correlation (R2 > 0.61) between nitrogen nutrition index and dry matter yield confirmed the capacity of ion exchange membrane to assess N availability from urine and dung.

(Source: John O’Donovan, et al. 2017. Can. J. Plant Sci., Vol. 97: Pages 10-13)

Nitrogen availability from dairy cow dung and urine applied to forage grasses in eastern Canada

Relative cumulative dry matter yields were Urine > Dilute urine > Dung > Control.

(Source: Gilles Belager, et al. 2015. Can. J. Plant Sci., Vol. 95: Pages 55-65)

Influence of production systems on return and risk from malting barley production in western Canada •

Field trials were done from

2007 to 2009 at 7 locations (Beaverlodge, Brandon, Fairview, Indian Head, Lacombe, Lethbridge, Scott) in western Canada. •

Different stubble type (barley, pea and canola), N rate (50% and 100% of recommended) and fungicide application at flag leaf were compared.

Planting barley on pea stubble was more profitable than on canola or barley stubble.

Potential to reduce N rate (50%) on pea stubble, but results were not conclusive.

Fungicide application increased yield and quality, but benefits and costs were about equal. Fungicide should only be considered when plant disease levels will significantly impact barley yield.

Overall, Net return (NR) was higher and risk was lower for malting barley production, when preceding crop was pea, fungicide was applied and N rate was 50%.

Priority for malting barley production should be to not plant barley on barley stubble (rotate crops) control leaf diseases when present and apply adequate but not excessive N rate to avoid high protein content.

(Source: E.G. Smith, et al. 2016. Can. J. Plant Sci., Vol. 96: Pages 339-346)

June, 2017 web  

Responding to Producer's Needs, Proper planning needed for optimal crop rotation benefit, Woodlot Insect Management, The Human Component, He...