Crop yield and nitrogen concentration with controlled release urea and split applications of nitrogen as compared to non-coated urea applied at seeding

Grant, C. A.; Wu, Ronggui; Selles, F.; Harker, K. Neil; Clayton, George W.; Bittman, S.; Zebarth, Bernie J.; Lupwayi, Newton Z.

doi:10.1016/j.fcr.2011.11.002

Cited by 221 publications

(157 citation statements)

References 22 publications

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“…Barley NR showed a linear increase to N application in almost all sites, with a quadratic component only at Melfort andLacombe under RT in 2004. Malhi et al (2010) and Grant et al (2012) reported similar results, with barley yield showing a linear increase to N fertilizer in all locations with a quadratic component only at the Lacombe and Melfort sites. For plot scale studies, many studies have indicated a quadratic relationship between crop yield and available N (Khakbazan et al 2011).…”

Section: Results and Discussion Barley Net Revenuesupporting

confidence: 63%

“…The average annual barley seed yield (Malhi et al 2010;Grant et al 2012) and NR increased with N application in almost all sites and years (Table 3). Barley yield was similar under different tillage systems and tillage by treatment interactions were not significant at any site or in any year; however, the average annual NR of barley tended to be higher under RT than CT at Lacombe.…”

Section: Results and Discussion Barley Net Revenuementioning

confidence: 99%

“…Details of the design and methods of this experiment have been described in several earlier papers (Malhi et al 2010;Soon et al 2011;Grant et al 2012); therefore, only a brief description is given. Field experiments were conducted from 2004 through 2006 at six sites located in Alberta, Saskatchewan, and Manitoba (Table 1).…”

Section: Materials and Methods Experimental Datamentioning

confidence: 99%

“…The goal of this study was to evaluate the effects of a single application of CRU or split applications of urea fertilizer as compared with NCU for their effects on crop growth, crop N accumulation and crop N concentration of wheat, barley, canola and corn across a wide range of environments. Grant et al (2012) reported that the use of CRU did not provide a consistent improvement in crop yield compared with standard regional timing and placement of NCU. Another study from this trial looked at the impact of CRU vs. NCU in relation to seed yield, protein concentration and N use efficiency near Melfort, SK, and Beaverlodge, AB (Malhi et al 2010).…”

Section: Literature Reviewmentioning

confidence: 99%

“…In the past, CRU products have been considered too expensive for widespread use in small grain production, but recent developments have led to a lower-cost polymer-coated urea products that have made the widespread use of these products in small grain and oilseed production more attractive (Gagnon et al 2012;Grant et al 2012). In the US agricultural market, the consumption of polymer-coated fertilizers has risen at an average annual rate of 14% during the 2001Á2009 period, indicating the growing acceptance of these products (Landels 2010).…”

Section: Literature Reviewmentioning

confidence: 99%

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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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Section: Results and Discussion Barley Net Revenuesupporting

confidence: 63%

Section: Results and Discussion Barley Net Revenuementioning

confidence: 99%

Section: Materials and Methods Experimental Datamentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

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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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Physiology of Nitrogen‐Use Efficiency

Malik¹,

Rengel²

2013

Improving Water and Nutrient‐Use Efficiency in Food Production Systems

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Impact of split nitrogen applications on nitrate leaching and maize yield in irrigated loamy sand soils of Northeast Nebraska

Singh,

Rudnick,

Snow

et al. 2024

Agrosystems Geosci & Env

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Little information is available on optimizing the number of nitrogen (N) splits based on nitrate (NO3‐N) leaching and maize yield in sandy soils. To address this gap, we evaluated the impact of multiple N splits (2‐, 3‐, 4‐, and 5‐N splits) on NO3‐N leaching and maize (Zea mays L.) grain yield in irrigated loamy sand soil at a producer site in the Bazile Groundwater Management Area of Northeast Nebraska. Porous suction cup lysimeters were installed at a depth of 120 cm to collect pore water samples from 23 leaching events in 2021, a dry year. Increasing the number of N‐splits did not affect the pore‐water NO3‐N concentration; however, it was 169%, 152%, 150%, and 129% higher in 2‐, 3‐, 4‐, and 5‐N split treatments compared to control, that is, without N application. Though the 2‐, 3‐, 4‐, and 5‐N splits had 110%, 71%, 120%, and 91% higher area‐based NO3‐N leaching than the control, less deep percolation and more evapotranspiration in control led to no significant differences in area‐based NO3‐N leaching among all treatments. All N‐splits resulted in higher maize yield, nitrogen use efficiency, plant N uptake, harvest index, and aboveground biomass than control; however, the number of N‐splits did not affect these parameters. The inclusion of environmental cost reduced the return to nitrogen by 92–143 $ ha−1 across all N‐split treatments but did not significantly affect the differences among the splits. Overall, the results indicate that increasing the number of N‐splits does not provide agronomic, economic, and environmental benefits in irrigated maize fields during a dry year.

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Crop yield and nitrogen concentration with controlled release urea and split applications of nitrogen as compared to non-coated urea applied at seeding

Cited by 221 publications

References 22 publications

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

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

Physiology of Nitrogen‐Use Efficiency

Impact of split nitrogen applications on nitrate leaching and maize yield in irrigated loamy sand soils of Northeast Nebraska

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