Agricultural Management of Enhanced-Efficiency Fertilizers in the North-Central United States

Nelson, Kelly A.; Scharf, Peter C.; Bundy, Larry G.; Tracy, P.H.

doi:10.1094/cm-2008-0730-03-rv

Cited by 36 publications

(24 citation statements)

References 39 publications

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“…These management strategies have included changes in crop genetic traits (Hirel et al, 2011), N fertilizer sources (Nelson et al, 2008), timings and methods of fertilizer application (Nash et al, 2013), and the spatial placement of N fertilizer in soil (Drury et al, 2006) or across agricultural fields Roberts et al, 2012).…”

Section: Nitrogen Management Of Poorly-drained Soilsmentioning

confidence: 99%

Urea Fertilizer Placement Impacts on Corn Growth and Nitrogen Utilization in a Poorly-Drained Claypan Soil

Johnson¹,

Nelson²,

Motavalli³

2016

JAS

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Practices to increase nitrogen (N) use efficiency (NUE) include selecting appropriate N fertilizer sources and application methods, but minimal research has focused on these practices in poorly-drained claypan soils which are prone to N loss. This research assessed the impact of different urea fertilizer placement practices on corn (Zea mays L.) production and N utilization in a poorly-drained claypan soil. Field trials were conducted in 2014 and 2015 in Missouri. Treatments consisted of pre-plant deep banding (20 cm) urea at 202 kg N ha -1 or urea plus a nitrification inhibitor (NI) (nitrapyrin) compared to pre-plant urea broadcast surface-applied or incorporated to a depth of 8 cm. In 2014, incorporating urea, deep banding urea, and deep banding urea plus NI had higher yields (> 10%) of corn compared to the control with grain yields ranging from 13.73 to 14.05 Mg ha -1 . In 2015, grain yields were lower than in 2014, ranging from 4.1 to 7.9 Mg ha -1 . Deep placing banded urea with a NI yielded an increase in grain yield up to 48% compared to the other treatments. Rainfall amounts were higher in 2015, which could have resulted in poorer root growth and greater N loss in deep banded treatments. In 2014, deep banding urea with a NI produced the highest NUE. Similar to NUE, silage tissue N concentrations in 2014 were greater with deep banded urea plus NI, while in 2015 silage tissue N concentrations were higher with surface applied urea. The results suggest that urea fertilizer incorporation including deep banding may improve corn grain production, N uptake, and NUE, but response was affected by climatic conditions. The addition of an NI may be an important safeguard when deep banding urea in years with excessive precipitation.

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Section: Nitrogen Management Of Poorly-drained Soilsmentioning

confidence: 99%

Urea Fertilizer Placement Impacts on Corn Growth and Nitrogen Utilization in a Poorly-Drained Claypan Soil

Johnson¹,

Nelson²,

Motavalli³

2016

JAS

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“…Barley seed protein content was found to be higher in 8 of 20 site-years with ESN, indicating ESN should be avoided if farmers are trying to grow malt barley. A study by Nelson et al (2008) summarized the effects of CRU compared with various other fertilizer sources on corn and wheat yield in northÁ central United States. The study found that pre-plant CRU produced corn yield similar to yield with anhydrous ammonia, ammonium nitrate (AN), and urea' n-(n-butyl) thiophosphoric triamide (NBPT), while CRU yield was greater than that from crops fertilized with urea or UAN.…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, they noted that this did not consider the environmental costs due to leaching with the use of urea. Noellsch et al (2009) completed a 2-yr field trial in northeast Missouri to determine the effects of CRU compared with conventional N fertilizers on corn crop growth and N recovery efficiency across varying slope positions in a clay pan soil. They determined that in the wetter low-lying position, anhydrous ammonia and CRU treatments increased yield as compared with urea, indicating that the use of CRU maybe more effective with targeted application in wetter conditions.…”

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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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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“…CRUs not only improved yields but also increased the protein content and reduced potential nitrogen losses compared with common urea14. The use of CRUs has shown advantages over ammonium nitrate, urea and urea ammonium nitrate, but relative performance varied with rainfall, fertilizer placement and soil texture15. Similarly, using CRKs also showed better results compared with conventional potassium in turfgrass16.…”

mentioning

confidence: 97%

Cumulative release characteristics of controlled-release nitrogen and potassium fertilizers and their effects on soil fertility, and cotton growth

Yang

Geng

et al. 2016

Sci Rep

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To investigate the interacting effects of polymer coated urea (PCU) and polymer coated potassium chloride (PCPC) on cotton growth, an experiment was conducted with containerized plants in 2014 and 2015. There were two kinds of nitrogen fertilizer, PCU and urea, which were combined with PCPC at three application rates (40, 80 and 120 kg ha−1). The kinds of nitrogen fertilizer formed the main plot, while individual rates of PCPC were the subplots. The results suggested N and K release patterns for PCU and PCPC in the soil were closely matched to the N and K requirements by cotton. Soil inorganic nitrogen contents significantly increased by using PCU instead of urea, and the same trend was observed with soil available potassium contents, which also had increased rates. Meanwhile, the number of bolls and lint yields of cotton in the PCU treatments were 4.9–35.3% and 2.9–40.7% higher than from urea treatments. Lint yields also increased by 9.1–12.7% with PCPC80 and PCPC120 treatments compared with PCPC40 treatment at the same nitrogen type. Hence, application of PCU combined with 80 kg ha−1 of PCPC fertilizer on cotton increased the yields and fertilizer use efficiencies in addition to improving fiber quality and delaying leaf senescence.

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Agricultural Management of Enhanced-Efficiency Fertilizers in the North-Central United States

Cited by 36 publications

References 39 publications

Urea Fertilizer Placement Impacts on Corn Growth and Nitrogen Utilization in a Poorly-Drained Claypan Soil

Urea Fertilizer Placement Impacts on Corn Growth and Nitrogen Utilization in a Poorly-Drained Claypan Soil

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

Cumulative release characteristics of controlled-release nitrogen and potassium fertilizers and their effects on soil fertility, and cotton growth

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