Influence of N fertilization method on weed growth, grain yield and grain protein concentration in no-till winter wheat

Beres, Brian L.; Harker, K. Neil; Clayton, George W.; Bremer, E.; O'Donovan, Timothy; Blackshaw, Robert E.; Smith, Ann Marie

doi:10.4141/cjps10037

Cited by 11 publications

(12 citation statements)

References 32 publications

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“…Conversely, kernel and test weight were greater for ESN® vs. one or more of the other forms. In other studies, grain yield and protein concentration in winter wheat were either similar or incrementally favourable for ESN® over uncoated urea in regions of the northern Great Plains (Beres et al 2010b;McKenzie et al 2010). …”

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confidence: 99%

“…The results suggest split applications of N might be most efficient for yield and protein optimization when combined with an enhanced efficiency urea product, particularly with urease or urease+nitrification inhibitors, and if the majority of N is applied in spring. Lacombe and Lethbridge, Alberta (Beres et al 2010a;Beres et al 2010c), and anecdotal reports from industry, indicate that this standard can be difficult to meet; therefore, most grain buyers will accept 110 g kg -1 and blend to specifications accordingly in an effort to provide a consistent supply of winter wheat with this quality profile. Feed markets and the emergence of the ethanol feedstock market may negatively impact supplies of CWRW if producers perceive less risk and increased profitability in targeting starch production over protein production.…”

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confidence: 99%

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Enhanced nitrogen management strategies for winter wheat production in the Canadian prairies

et al. 2018

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To address knowledge gaps around enhanced efficiency urea fertilizer efficacy for nitrogen (N) management, a study was designed to improve integrated nutrient management systems for western Canadian winter wheat producers. Three factors were included in Experiment 1: (i) urea type [urea, urea + urease inhibitor—Agrotain®; urea + urease and nitrification inhibitor—SuperU®, polymer-coated urea—Environmentally Smart Nitrogen® (ESN®), and urea ammonium nitrate (UAN)], (ii) application method (side-band vs. spring-broadcast vs. 50% side-band: 50% spring-broadcast), and (iii) cultivar (AC Radiant hard red winter wheat vs. CDC Ptarmigan soft white winter wheat). The Agrotain® and CDC Ptarmigan treatments were removed in Experiment 2 to allow for additional application methods: (i) fall side-band, (ii) 50% side-band — 50% late fall broadcast, (iii) 50% side-band — 50% early spring broadcast, (iv) 50% side-band — 50% mid-spring broadcast, and (v) 50% side-band — 50% late spring broadcast. CDC Ptarmigan produced superior grain yield and N utilization over AC Radiant. Grain yield and protein content were influenced by N form and application method. Split applications of N usually provided the maximum yield and protein, particularly with Agrotain® or SuperU®. An exception to the poor fall-application results was the SuperU® treatments, which produced similar yield to the highest-yielding treatments. The results suggest that split applications of N might be most efficient for yield and protein optimization when combined with an enhanced efficiency urea product, particularly with urease or urease + nitrification inhibitors, and if the majority of N is applied in spring.

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confidence: 99%

Enhanced nitrogen management strategies for winter wheat production in the Canadian prairies

et al. 2018

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“…In contrast, several studies have found that CRU provides a significant yield benefit as compared with urea and other fertilizer types (Beres et al 2010;Ziadi et al 2011;Yang et al 2011). A 3-yr potato production study in eastern Quebec (Ziadi et al 2011) found CRU to be a promising N source to increase potato yield and NUE.…”

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confidence: 94%

“…Marketable yield was higher with CRU than other treatments, but the authors noted N release in CRU was dependent on temperature and moisture, so the results could differ depending on location and weather. In studies by Yang et al (2011) in northern China and by Beres et al (2010) in Canada that examined CRU effects on wheat yield and quality, the NUE and yield of wheat was improved with the use of CRU compared with urea, but wheat protein content did not differ with CRU compared with other sources.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The intent is to reduce the risk of N losses, thus improving N use efficiency and reducing potential negative environmental damage. Several studies have examined the environmental and agronomic impacts of using CRU with varied results (Nelson et al 2008Beres et al 2010;Cahill et al 2010;Hyatt et al 2010;Malhi et al 2010;Mckenzie et al 2010;Blackshaw et al 2011;Ziadi et al 2011;Yang et al 2011).…”

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An economic study of controlled release urea and split applications of nitrogen as compared with non-coated urea under conventional and reduced tillage management

et al. 2013

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study of controlled release urea and split applications of nitrogen as compared with non-coated urea under conventional and reduced tillage management. Can. J. Plant Sci. 93: 523Á534. To evaluate the use of controlled-release urea (CRU) as a beneficial management practice for nitrogen management of wheat, barley, and canola, a multi-location study was conducted from 2004 to 2006 in a range of agro-environments across western Canada. The objective was to evaluate the relative economic performance of CRU and non-coated urea (NCU) for their effects on seed yield and quality, costs and net revenue (NR) using conventional tillage (CT) and reduced tillage (RT) management under varying environmental conditions. The NR was estimated as the income remaining after paying for all cash costs, ownership costs on machinery and buildings, and labour. The main factor affecting crop yield and NR was N application rate. In general, application of NCU produced similar or higher net revenues than that of CRU, split fertilizer applications or a blend of NCU and CRU. There were some limited situations where the use of split applications, CRU or CRU in a blend with the NCU increased crop yield as compared with NCU; however, the increased yield was not sufficient to cover the extra costs of CRU or the split application. The impact of tillage system on crop yield and NR was not consistent. Net revenue was higher under CT than RT for certain crops in some regions, but not in all regions or for all crops. Overall, NR analysis indicated that use of CRU did not provide an economic benefit over the use of NCU.

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Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

Otto

Castro

Mariano³

et al. 2016

Bioenerg. Res.

117

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Land area devoted to sugarcane (Saccharum spp.) production in Brazil has increased from 2 million to 10 million ha over the past four decades. Studies have shown that, from an environmental perspective, the transformation of nitrogen (N) fertilizers into N 2 O gases can offset the advantages gained by replacing fossil fuels with biofuels. Our objectives here were to review recent developments in N management for sugarcane-biofuel production and assess estimates of N use efficiency (NUE) and N losses based on future scenarios, as well as for life-cycle assessments of bioenergy production. Approximately 60 % of N-based fertilizer applied to sugarcane fields in Brazil is recovered by plants and soils, whereas N losses to leaching and N 2 O emissions can average 5.6 and 1.84 % of the total applied N, respectively. Maintenance of trash, rotation with N-fixing legume species, and optimization of byproducts usage have potential for reducing the N requirements of sugarcane cultivation in Brazil. Moreover, the development of sugarcane genotypes with higher NUEs, along with management systems that consider soil capacity of mineralization, is required for improving the NUE of sugarcane. Strategies to maintain N as NH 4 + in sugarcane-cropped soils also have the potential to reduce N losses and enhance NUE. The development of secondgeneration biofuels is important for increasing biofuel production while simultaneously maintaining N rates and improving NUE, and sugarcane systems in Brazil show potential for sustainable biofuel production with low N rates and limited N 2 O losses. Reducing N rates in sugarcane fields is thus necessary for improving sugarcane-based biofuel production and reducing its environmental impacts.

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Influence of N fertilization method on weed growth, grain yield and grain protein concentration in no-till winter wheat

Cited by 11 publications

References 32 publications

Enhanced nitrogen management strategies for winter wheat production in the Canadian prairies

Enhanced nitrogen management strategies for winter wheat production in the Canadian prairies

An economic study of controlled release urea and split applications of nitrogen as compared with non-coated urea under conventional and reduced tillage management

Nitrogen Use Efficiency for Sugarcane-Biofuel Production: What Is Next?

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