Effects of sowing date, nitrogen application, and sowing rate on oat quality

Zhou, Min; Roberts, G. L.; Robards, Kevin; Glennie-Holmes, Malcolm; Helliwell, Stuart

doi:10.1071/a97146

Cited by 16 publications

(7 citation statements)

References 14 publications

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“…In response to decreasing planting density, significant increases in the peak viscosity of Jingyou 586 were observed as planting density ranged from 25 × 10 4 (D1) to 12.5 × 10 4 hills ha −1 (D3), peaking at D3; the peak viscosity of Shendao 47 exhibited a different trend by peaking at the D2 treatment (Table 4). Similar trends as peak viscosities were observed for trough and final viscosity in response to the addition of Nand planting density, which agreed with Gu et al [6] and Zhou et al [40] who reported that low N and high sowing rates increased trough and final viscosity.…”

Section: Cooking and Eating Qualitysupporting

confidence: 89%

“…Pasting temperature is the temperature when starch paste begins to rise. Zhou et al [40] found that high N and sowing rates increased pasting temperature and prolonged the peak time (the time to reach peak viscosity). Cao et al [11] also reported that the application of N increased peak time, which was harmful to rice cooking quality.…”

Section: Cooking and Eating Qualitymentioning

confidence: 99%

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Effects of Cultivar, Nitrogen Rate, and Planting Density on Rice-Grain Quality

et al. 2018

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To achieve superior rice-grain quality, more emphasis has been placed on the genetic diversity of breeding programs, although this improvement could be seriously restricted in the absence of comparable agricultural management practices. Nitrogen (N) application and planting density are two important agronomic practices influencing rice growth, yield, and grain quality. This study investigated the four main aspects of rice-grain quality, namely, milling (brown-rice, milled-rice, and head-rice percentage), appearance (length/width ratio, chalky-kernel percentage, and chalkiness), nutrition (protein content), and cooking and eating quality (apparent amylose content, gel consistency, and pasting viscosities) of two rice cultivars (Shendao 47 and Jingyou 586) under four N rates (0, 140, 180, and 220 kg ha−1), and three planting densities (25 × 104, 16.7 × 104, and 12.5 × 104 hills ha−1) in a field trial from 2015 to 2016. The four main aspects of rice-grain quality were significantly influenced by cultivar. Several aspects were affected by the interactions of N rate and cultivar. No significant interaction between N rate and plating density was detected for all grain-quality parameters. A higher N rate increased the percentages of brown rice and head rice, chalky-kernel percentage, and setback and peak time values, but reduced the length/width ratio, chalkiness, apparent amylose content, gel consistency, and peak-, trough-, and final-viscosity values. These results indicate that the N rate has a beneficial effect on milling and nutritional quality, but a detrimental effect on appearance and cooking and eating quality. Jingyou 586 and Shendao 47 had different responses to planting density in terms of grain quality. Our study indicates that low planting density for Jingyou 586, but a medium one for Shendao 47, is favorable for grain quality.

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Section: Cooking and Eating Qualitysupporting

confidence: 89%

Section: Cooking and Eating Qualitymentioning

confidence: 99%

Effects of Cultivar, Nitrogen Rate, and Planting Density on Rice-Grain Quality

et al. 2018

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“…The significant site × N interaction for both plump and thin seed indicates that this response varied across environments (Table 3). This may be the reason why other research results investigating the effects of N on plump and/or thin seed have not been consistent (Zhou et al 1998;Hamill 2002;Knaggs 2002).…”

Section: Grain Qualitymentioning

confidence: 82%

Effect of nitrogen, seeding date and cultivar on oat quality and yield in the eastern Canadian prairies

May¹,

Mohr²,

Lafond³

et al. 2004

Can. J. Plant Sci.

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. 2004. Effect of nitrogen, seeding date and cultivar on oat quality and yield in the eastern Canadian prairies. Can. J. Plant Sci. 84: 1025-1036. The proportion of oat (Avena sativa L.) being used for race horses and human consumption has increased over the past 15 yr. The objective of this study was to evaluate the effects of N, seeding date and cultivar on grain yield components, grain yield and grain quality of oat under a directseeding system. Four N rates, three seeding dates and two cultivars were tested at Indian Head, Melfort, and Canora, SK, and Brandon, MB. Yield was more responsive to increasing N rates from 15 and 80 kg ha -1 when oat was seeded in early May versus early June. Panicles plant -1 was the yield component that accounted for most of the yield increase achieved from increasing rates of N, while kernel weight was the yield component that decreased as the rate of N increased. Physical seed quality decreased (plump seed decreased and thin seed increased) with delayed seeding and greater N fertilizer rates. Nitrogen fertilizer and seeding date had a much larger effect on the quality of CDC Pacer than AC Assiniboia. Combining early seeding, appropriate N fertility and well-adapted cultivars should increase the likelihood of optimizing oat yield and quality necessary for high-value markets. Depuis quinze ans, la quantité d'avoine (Avena sativa L.) employée pour nourrir les chevaux de course et pour la consommation humaine ne cesse d'augmenter. L'étude devait évaluer les effets de l'azote (N), de la date des semis et du cultivar sur les composantes du rendement grainier, le rendement grainier proprement dit et la qualité du grain de l'avoine ensemencée directement. Pour cela, les auteurs ont testé quatre taux d'application, trois dates de semis et deux cultivars à Indian Head, Melfort et Canora, en Saskatchewan, ainsi qu'à Brandon, au Manitoba. Le rendement réagit mieux à l'augmentation du taux d'application (de 15 à 80 kg de N par hectare) quand l'avoine est semée au début de mai plutôt qu'au début de juin. Le nombre de panicules par plant est la composante qui explique la majeure partie de la hausse de rendement dérivant de la plus grande quantité d'engrais utilisée; le poids de l'amande, en revanche, diminue avec la hausse du taux d'application. La qualité physique des semences diminue (réduction du nombre de grains ventrus et hausse du nombre de grains minces) quand on retarde la date des semis et accroît les applications d'engrais. L'engrais azoté et la date des semis influent plus sur la qualité de CDC Pacer que sur celle d'AC Assiniboia. En combinant de la bonne façon des semis précoces, le volume d'engrais et des cultivars bien acclimatés, on devrait se rapprocher du rendement optimal pour l'avoine et de la qualité souhaitée pour accéder aux marchés les plus lucratifs.

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“…The pasting properties of the slurry were determined with a Rapid Viscoanalyser (RVA, Newport Scientific, Warriewood, NSW, Australia) using a previously developed profile5 with a stirring speed of 960 rpm for 10 s and 115 rpm for the remainder of the test and with the temperature programmed to rise from 40 to 90 °C in 3 min, to hold for 6.5 min, to cool to 40 °C in 4.5 min and to hold for 5 min. RVA measurements are reported as previously described11 in Rapid Viscoanalyser Units (RVU), minutes or degrees. An RVU is approximately equal to 10 cP.…”

Section: Methodsmentioning

confidence: 99%

Effects of enzyme treatment and processing on pasting and thermal properties of oats

Zhou

Robards

Glennie-Holmes

et al. 2000

J. Sci. Food Agric.

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Specific enzymes were used to decompose protein and β‐glucans in wholemeal oats prior to measuring pasting and thermal properties of the meal using rapid viscoanalysis and differential scanning calorimetry. β‐Glucans were responsible for a large proportion of these properties of the meals, while the contribution of protein was much less. An extra transition process was observed using DSC tests on wholemeal oats compared to isolated starch. Pasting and thermal properties were correlated with each other and with compositional data. Processing effects on thermal properties were also noted. © 2000 Society of Chemical Industry

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Effects of sowing date, nitrogen application, and sowing rate on oat quality

Cited by 16 publications

References 14 publications

Effects of Cultivar, Nitrogen Rate, and Planting Density on Rice-Grain Quality

Effects of Cultivar, Nitrogen Rate, and Planting Density on Rice-Grain Quality

Effect of nitrogen, seeding date and cultivar on oat quality and yield in the eastern Canadian prairies

Effects of enzyme treatment and processing on pasting and thermal properties of oats

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