Urea fertilizer forms affect grain corn yield and nitrogen use efficiency

Gagnon, Bernard; ZiadiNoura,; GrantCynthia,

doi:10.4141/cjss2011-074

Cited by 71 publications

(64 citation statements)

References 37 publications

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“…For example, Gagnon et al (2012) reported that grain corn yields were higher with PCU than with untreated urea in Quebec but the agronomic benefits of PCU were less consistent for small grain crops on the Canadian prairies, silage corn (Zea mays L.) in British Columbia, or potatoes (Solanum tuberosum) in New Brunswick (Soon et al 2011;Grant et al 2012;Zebarth et al 2012). Hyatt et al (2010) reported higher potato yields and lower N 2 O emissions from PCU than from conventional urea on sandy soils in Minnesota.…”

Section: Introductionmentioning

confidence: 99%

Effect of polymer-coated urea on nitrous oxide emission in zero-till and conventionally tilled silage corn

Hunt¹,

Bittman²,

Zhang³

et al. 2016

Can. J. Soil. Sci.

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Little is known about nitrous oxide (N 2 O) emission from silage corn (Zea mays L.). Studies have shown that controlled-release N fertilizers have the potential to reduce N 2 O emissions, compared with conventional N fertilizers. This 2-year field study compared N 2 O emissions from urea fertilizer and a slow-release polymer-coated urea (CRU) applied to silage corn on soils managed with conventional tillage (CT) and zero tillage (ZT). The study was conducted on a silty loam soil in the cool, moist climate of south coastal British Columbia, Canada, taking year-around measurements from static chambers. Over 2 study years there was a significant interaction between N sources and tillage methods; under CT there was no significant difference between CRU and urea (557 vs. Mots-clés : oxyde nitreux, maïs, ensilage, urée, enrobage de polymère, travail du sol.

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Section: Introductionmentioning

confidence: 99%

Effect of polymer-coated urea on nitrous oxide emission in zero-till and conventionally tilled silage corn

Hunt¹,

Bittman²,

Zhang³

et al. 2016

Can. J. Soil. Sci.

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“…Detailed information about these EENFs is provided in Motavalli et al (2008) [24]. Many studies have shown that EENFs can improve corn yields and NUE under wet soil conditions [25][26][27]. In-season N deficiencies caused by N losses under waterlogged soil conditions after initial pre-plant N applications may lower plant N uptake and reduce crop yields.…”

Section: Introductionmentioning

confidence: 99%

Early-Season Soil Waterlogging and N Fertilizer Sources Impacts on Corn N Uptake and Apparent N Recovery Efficiency

2018

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Soil waterlogging resulting from extreme precipitation events creates anaerobic conditions that may inhibit plant growth and increase N losses. A three-year (2013)(2014)(2015) field experiment was conducted in poorly-drained claypan soils to assess the effects of waterlogging [0 or 7-days waterlogging at V3 growth stage of corn (Zea mays L.)] and pre-plant application of different N fertilizer sources and post-waterlogging rescue N application (0 or 84 kg N ha −1 of urea plus urease inhibitor (NCU + UI) at V7) on chlorophyll SPAD meter (CM) readings, stomatal conductance, ear leaf and silage N concentrations, N uptake and apparent N recovery efficiency (ARE) of two corn hybrids with varying amounts of flood tolerance. Pre-plant N fertilizer sources included a non-treated control (CO), urea (NCU), urea plus nitrification inhibitor (NCU + NI) and polymer coated urea (PCU) applied at 168 kg N ha −1 . In 7-days waterlogged plots, rescue N applications increased N uptake in PCU treatments 33% and 40% in 2013 and 2014, respectively, as well as in NCU by 48% in 2013. In 7-days waterlogged plots which received rescue N applications, NCU and PCU in 2013 resulted in higher N uptake than CO and NCU + NI by 47 to 77 kg ha −1 . PCU had higher N uptake than NCU and NCU + NI by 78 and 72 kg ha −1 in 7-days waterlogged plots that received rescue N applications in 2014. Corn hybrid showed no differences in N uptake and ARE in our study. Our results indicate combining pre-plant N fertilizer source selection and rescue N applications may be a strategy to reduce possible decreases in corn N uptake caused by early season soil waterlogging in average rainfall years.

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“…One such product is ESN, which consists of urea with a polymer coating that is permeable to water and gradually releases N over the growing season at a rate dependent on temperature. ESN typically costs only 15Á30% more than uncoated urea and substantially less than earlier versions of a similar product (Gagnon et al 2012).…”

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%

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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Urea fertilizer forms affect grain corn yield and nitrogen use efficiency

Cited by 71 publications

References 37 publications

Effect of polymer-coated urea on nitrous oxide emission in zero-till and conventionally tilled silage corn

Effect of polymer-coated urea on nitrous oxide emission in zero-till and conventionally tilled silage corn

Early-Season Soil Waterlogging and N Fertilizer Sources Impacts on Corn N Uptake and Apparent N Recovery Efficiency

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

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