Impact of Water and Nitrogen Management Strategies on Maize Yield and Water Productivity Indices under Linear-Move Sprinkler Irrigation

Rudnick, Daran R.; Irmak, Suat

doi:10.13031/trans.56.10215

Cited by 5 publications

(13 citation statements)

References 49 publications

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“…In this study both irrigation and nitrogen treatments had a significant effect (p < 0.05) on maize yield, consistent with other studies of maize water and nitrogen yield response. Like the results of this study Rudnick and Irmak (2013) found greatest yields for the highest nitrogen and irrigation treatments. In this study, yield was not significantly different (p < 0.05) between nitrogen treatments for the 25% FIT, 50% FIT and 75% FIT irrigation treatments each year, however, there was a significant difference for the FIT irrigation treatment in 2018 and 2019.…”

Section: Discussionsupporting

confidence: 82%

“…Evapotranspiration is the sum of transpiration and evaporation and reduced canopy vegetative cover associated with reduced productivity allows for more soil exposed to direct sunlight leading to more soil evaporation such that ETc is essentially the same regardless of crop yield. The results of this study may not be applicable to regions with higher relative humidity and greater growing season rainfall, The results of a study on the impact of nitrogen fertilizer rate on maize evapotranspiration in Nebraska (Rudnick & Irmak, 2013) are similar to results of this study as reported ETc was numerically similar across five nitrogen treatments for each of three deficit irrigation treatments. Unfortunately, they did not conduct statistical analysis of ETc in the study.…”

Section: Discussionmentioning

confidence: 45%

“…This difference in yield response to irrigation is likely due to the greater reduction in ETc by the irrigation treatments in this study. The 25% FIT treatment in this study resulted in a 52% reduction in ETc relative to FIT while the rainfed treatment of Rudnick and Irmak (2013) resulted in a 22% reduction in ETc relative to FIT. The ETc of the 75% FIT treatment in this study was approximately equal to ETc of the rainfed treatment in the study of Rudnick and Irmak (2013).…”

Section: Discussionmentioning

confidence: 60%

“…In this study there was a decisive nonlinear decrease in yield with decreasing irrigation amount for a given nitrogen treatment. Rudnick and Irmak (2013) found a much smaller nonlinear decrease in yield with irrigation amount. This difference in yield response to irrigation is likely due to the greater reduction in ETc by the irrigation treatments in this study.…”

Section: Discussionmentioning

confidence: 88%

“…In this study, yield was not significantly different (p < 0.05) between nitrogen treatments for the 25% FIT, 50% FIT and 75% FIT irrigation treatments each year, however, there was a significant difference for the FIT irrigation treatment in 2018 and 2019. Rudnick and Irmak (2013) found significant differences (p < 0.05) in yield between nitrogen treatments for a given irrigation treatment representing a much greater overall yield response to nitrogen deficiency. In this study there was a decisive nonlinear decrease in yield with decreasing irrigation amount for a given nitrogen treatment.…”

Section: Discussionmentioning

confidence: 89%

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Impact of Water and Nitrogen Availability on Maize Evapotranspiration and Soil Water Trends Under High Frequency Sprinkler Irrigation

King¹,

Tarkalson²,

Bjorneberg³

2021

2021 ASABE Annual International Virtual Meeting, July 12-16, 2021

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One potential advantage of variable rate irrigation (VRI) is that less water can be applied to field areas with low productivity, without adversely affecting yield, thereby reducing water use, nutrient leaching, and pumping costs. This inferred potential advantage of VRI has not been fully evaluated experimentally. A three-year field study on maize (Zea mays L.) grain yield was conducted to test the hypothesis that high and low productivity has no effect on crop ET. High and low productivity were established using high and low soil nitrogen (N) supplies. The effect of 0 kg N ha -1 (low N supply) and 246 kg N ha -1 (high N supply) application under fully irrigated (FIT) and three limited irrigation rates (75% FIT, 50% FIT, and 25 FIT) on maize grain yield and soil water trends were investigated in 2017, 2018 and 2019 under lateral-move irrigation in south central Idaho. Maize evapotranspiration (ETc), grain yield and soil water contents were significantly different (p < 0.05) between irrigation treatments and study year. Grain yield decreased nonlinearly as seasonal irrigation amount decreased regardless of N supply. The maize ETc and soil water contents from the two N rates within each irrigation level were the same. During each year of the study and within each irrigation treatment, there were no significant (p < 0.05) maize ET or soil water content differences between the N treatments. Assuming yields under different N application rates were representative of high and low maize productivity areas of fields, the results show that reducing water application to low productivity areas will reduce grain yield at the same rate as in high productivity areas. Thus, VRI does not provide the opportunity to reduce water use and pumping costs while maintaining yield levels in low production areas

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 45%

Section: Discussionmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 89%

See 3 more Smart Citations

Impact of Water and Nitrogen Availability on Maize Evapotranspiration and Soil Water Trends Under High Frequency Sprinkler Irrigation

King¹,

Tarkalson²,

Bjorneberg³

2021

2021 ASABE Annual International Virtual Meeting, July 12-16, 2021

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Corn response to long‐term seasonal weather stressors: A review

Ortez,

Lindsey,

Thomison

et al. 2023

Crop Science

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Long‐term weather patterns (environmental conditions or stresses exceeding 10 days in length) have the potential to influence corn (Zea mays L.) growth, development, and yield. This review summarizes the current knowledge (with emphasis placed on the Midwestern U.S. production environment) on how long‐term weather conditions affect corn growth and yield, including (i) drought and heat stress, (ii) solar radiation, and (iii) distribution of heat unit accumulation during the season. Each section contains summaries of how these environmental factors influence corn growth and yield and provides context into past events experienced. The focus of the review is on dent corn grown for grain production, though relevant issues related to other types (i.e., silage corn) are included. This review also discusses agronomic recommendations or considerations to help alleviate the negative effects of stress conditions and identify areas where future research would be beneficial to continue improving the resiliency of corn cropping systems. Periods of high heat and water deficit as well as limited light availability challenge the ability to maximize yield production in corn. Temperature affects crop growth and development through the season, and accurately describing phenological progression using heat unit accumulation is a challenge. Advances in corn breeding and genetics, hybrid selection, and agronomic management practices will be key to ensuring long‐range productivity and fully leveraging possible benefits from the shifts in long‐range weather patterns.

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Cumulative Deficit Irrigation and Nitrogen Effects on Soil Water Trends, Evapotranspiration, and Dry Matter and Grain Yield of Corn under High Frequency Sprinkler Irrigation

King¹,

Tarkalson²,

Bjorneberg³

2022

Applied Engineering in Agriculture

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HighlightsEvapotranspiration and corn grain yield under full and deficit water and nitrogen application were measured in a 3-yr study.Soil water trends, evapotranspiration, and dry matter and grain yields were significantly different between irrigation treatments and study year.Nitrogen availability did not significantly affect soil water trends or evapotranspiration within an irrigation level.Grain yield was not significantly different between full irrigation and 75% of full irrigation within a nitrogen level.Results indicate that crop evapotranspiration is independent of crop yield potential when soil water content is similar under high evaporative demand and frequent sprinkler irrigation.Reducing irrigation application to low-yield potential field areas will reduce yield.Abstract.Historically feed corn has been a minor crop in south central Idaho but over the past three decades corn production in southern Idaho has increased fourfold in response to a similar increase in the local dairy industry. Corn seasonal water use and response to water deficits in the region’s climate is lacking. A 3-year field study on corn (Zea mays L.) was conducted in 2017, 2018, and 2019 to evaluate the cumulative effects of continuous water and nitrogen (N) deficits on soil water trends, evapotranspiration, and dry matter and grain yield. Four irrigation rates, fully irrigated (FIT) and three deficit irrigation rates (75% FIT 50% FIT, and 25% FIT) combined with two N supply rates (0 and 246 kg N ha-1) were investigated under lateral-move irrigation. Growing season soil water depletion in 2017 in the 25% FIT and 50% FIT irrigation treatments significantly reduced soil water availability at planting in subsequent years and resulted in reduced yields relative to 2017. Nitrogen treatments had no significant effect on soil water availability, seasonal soil water depletion, or crop evapotranspiration (ETc) for a given irrigation treatment. Crop evapotranspiration was significantly different between irrigation treatments in each study year and decreased as irrigation amount decreased. Dry matter yield was significantly different between irrigation treatments in each study year, but there was no significant difference between the 75% FIT and FIT irrigation treatments for a given N treatment. Differences in dry matter yield decreased between N treatments as irrigation amount decreased. Grain yield was significantly reduced by deficit irrigation in each study year, but there was no significant difference between the 75% FIT and FIT irrigation treatments for a given N treatment in each study year. Grain yield was significantly different between nitrogen treatments for only the FIT irrigation treatment. The lack of significant difference in grain yield between the 75% FIT and FIT irrigation treatments resulted in a curvilinear convex downward water production function regardless of nitrogen treatment. A reduction in applied water resulted in a reduction of grain yield regardless of N availability suggesting that a reduction in irrigation application to less productive areas of a field will cause a yield reduction. The lack of significant difference in crop ETc between N treatments for a given irrigation treatment indicates that crop ETc is unaffected by crop yield potential when soil water contents are similar under high evaporative demand and frequent sprinkler irrigation. Keywords: Corn, Deficit irrigation, Evapotranspiration, Nitrogen, Sprinkler irrigation, Water use, Water production function, Yield.

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Impact of Water and Nitrogen Management Strategies on Maize Yield and Water Productivity Indices under Linear-Move Sprinkler Irrigation

Cited by 5 publications

References 49 publications

Impact of Water and Nitrogen Availability on Maize Evapotranspiration and Soil Water Trends Under High Frequency Sprinkler Irrigation

Impact of Water and Nitrogen Availability on Maize Evapotranspiration and Soil Water Trends Under High Frequency Sprinkler Irrigation

Corn response to long‐term seasonal weather stressors: A review

Cumulative Deficit Irrigation and Nitrogen Effects on Soil Water Trends, Evapotranspiration, and Dry Matter and Grain Yield of Corn under High Frequency Sprinkler Irrigation

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