Yield and Nitrogen Requirement of No‐Tillage Corn as Influenced by Cultural Practices

Eckert, D. J.; Martin, V. L.

doi:10.2134/agronj1994.00021962008600060036x

Cited by 11 publications

(11 citation statements)

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“…Yield was not affected by timing of N application. This result is consistent with previous research at this location involving the same soil type, which indicated no differences in yield response to timing of N application (3). Significant linear responses to N application rate occurred each year and quadratic responses to N rate were significant in 2000 and 2001.…”

Section: Grain Yield Response To Nitrogensupporting

confidence: 93%

Nitrogen Fertility Effects on Grain Yield, Protein, and Oil of Corn Hybrids with Enhanced Grain Quality Traits

Thomison¹,

Geyer²,

Bishop

et al. 2004

Crop Management

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Grain of corn (Zea mays L.) hybrids containing nutritionally enhanced genetics may exhibit higher oil and crude protein profiles than normal field corn. However, the impact of N management on these traits is not well understood. Field experiments were conducted at Hoytville, OH from 2000 to 2002 to determine effects of different timings of nitrogen application (at planting versus split) and N rates (0, 60, 120, and 180 lb/acre) on the grain yield, protein, and oil of two corn hybrids containing Supercede genetics. Grain protein concentration showed more consistent response to increasing N rates than did yield. Protein exhibited a linear response to increasing N rates each year. Yield responded positively to increasing N rates in 2001 and 2002 but showed no additional response above 60 lb of N per acre in 2000. Split applications of N increased grain protein concentration in two of the three years, but had little or no effect on yield. Grain oil concentration was not influenced by the timing of N application and responded to N rate only in 2001. Results of the study demonstrate that N management will be an important factor in maximizing the grain protein of nutritionally enhanced hybrids, but producing grain with consistently high protein concentration may be difficult given the variation in growing conditions and environments characteristic of this part of the Corn Belt.

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Section: Grain Yield Response To Nitrogensupporting

confidence: 93%

Nitrogen Fertility Effects on Grain Yield, Protein, and Oil of Corn Hybrids with Enhanced Grain Quality Traits

Thomison¹,

Geyer²,

Bishop

et al. 2004

Crop Management

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“…In fine-textured soils, early planting required an additional 22 kg N ha -1 to obtain optimum yield compared to late planting. These findings corroborate those of Eckert and Martin (1994), who demonstrated that N needed to achieve maximum yield varied from 0 to 205 kg N ha -1 for early planted corn, and from 0 to 175 kg N ha -1 for late-planted corn. This could be explained by the fact that delayed planting reduces the corn capacity to respond to greater N rates.…”

Section: Economically Optimal Nitrogen Rate As Affected By Soil Textusupporting

confidence: 90%

“…They observed that in 1 of the 2 yr, corn planted in early May was more responsive to applied N than corn planted in early June. A similar observation was also reported by Eckert and Martin (1994), indicating that delayed planting reduced yield in each site-year, and almost always reduced the quantity of N required to obtain optimum yield. Late planting can decrease the EONR, but the year-to-year variability in N demand cannot be ignored (Mullen et al, 2010).…”

Section: Site Id Yearsupporting

confidence: 84%

Variability in Corn Yield Response to Nitrogen Fertilizer in Eastern Canada

Kablan¹,

Chabot²,

Mailloux³

et al. 2017

Agronomy Journal

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Corn (Zea mays L.) yield response to N has been found to vary spatially within a field. The objective of this study was to examine how grain corn yield response to N varies with planting date, soil texture, and spring weather across sites and years in the Montérégie region. Trials were conducted from 2002 to 2004 and 2006 to 2010, at 11 sites with 23 hybrids and four N application rates, for a total of 45 site-years. Each site-year involved five or six N rates ranging from 80-90 to 240 kg N ha -1 . Grain yield response to N rates varied among site-years. Trials were separated into two groups based on optimal and late planting dates. Significant differences in grain yield among the applied N rates were observed in all of the site-years planted at optimal dates (from 8.8-14.7 Mg ha -1 ), and in most of those planted late (8.5-12.8 Mg ha -1 ). Economic optimum nitrogen rates (EONR) ranged less widely for site-years planted on optimal dates (180-237 kg N ha -1 ) than for those planted late (132-237 kg N ha -1 ). The EONR was affected by soil textural classes and rainfall. On coarse-textured soils, more N was needed to optimize grain yield in years with wet growing seasons. These results suggest that the current N recommendations for corn in Quebec should consider the variability in response associated with site-specific effects of planting date, soil texture, and weather.

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“…Conversely, another recent study from Missouri assessed planting date effects on corn response to starter nitrogen and found that planting date did not affect yield response to N fertilization (3). An Ohio study by Eckert and Martin found that delayed planting reduced both corn grain yield and the quantity of N required to maximize grain yields in a no‐tillage system (4).…”

Section: Late Planting Decreases Corn Yields Also Optimum N Ratementioning

confidence: 99%

Corn Response to Nitrogen Fertilizer as Affected by Planting Date and Hybrid

et al. 2010

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Producers of the eastern Corn Belt are often forced to either delay corn (Zea mays, L.) planting or replant due to unfavorable early season growing conditions. In these situations producers may decrease N rates due to decreased yield potential or switch to short season hybrids to reduce the risk of frost injury prior to maturity. Hybrids with differing yield potential may have different N requirements, but definitive research to determine the impact of hybrid selection on N response is lacking. Field experiments were conducted in Ohio during 2006 and 2007 to evaluate if corn grain yield and stalk lodging attributed to N fertilizer is affected by hybrid or planting date. This experiment evaluated two planting dates (late April/early May and early/mid‐June), with subplots comparing N fertilizer rates (0, 60, 120, and 180 lb N/acre), and sub‐subplots containing corn hybrids of differing maturities (104, 108, 109, and two 113 days relative maturity). In 2006, planting date did not affect the economically optimum N fertilizer rate (EONR), although late planted corn did produce lower grain yields. In 2007, late‐planted corn was less responsive to N with the optimum N rate being 38 lb N/acre less than early‐planted corn. Differences in N response between hybrids were noted, but optimum N rates were not markedly different.

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Yield and Nitrogen Requirement of No‐Tillage Corn as Influenced by Cultural Practices

Cited by 11 publications

References 0 publications

Nitrogen Fertility Effects on Grain Yield, Protein, and Oil of Corn Hybrids with Enhanced Grain Quality Traits

Nitrogen Fertility Effects on Grain Yield, Protein, and Oil of Corn Hybrids with Enhanced Grain Quality Traits

Variability in Corn Yield Response to Nitrogen Fertilizer in Eastern Canada

Corn Response to Nitrogen Fertilizer as Affected by Planting Date and Hybrid

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