Sensor-based N management did not compromise corn yield relative to grower practices.

nitrogen · yield · Zea mays (maize)Positive and negative results

278 papers in the same direction as this claim · 1,906 reporting no difference from an alternative

1. positive
   High nitrogen rates increased corn yield 1.6-fold over unfertilized controls in medium textured soils.

   Corn Response to Nitrogen is Influenced by Soil Texture and Weather · 2012 · compared with unfertilized control

   No difference from an alternativeCited by this paper

2. positive
   For warm, moist 2012 Nebraska sites, nitrogen application was reduced with no yield decrease relative to the non-limiting reference.

   Model and Sensor‐Based Recommendation Approaches for In‐Season Nitrogen Management in Corn · 2015 · compared with non‐limiting N reference

   No difference from an alternativeCited by this paper

3. positive
   Economic optimum seeding and nitrogen rates raised mean ROI by up to 12.1% compared with agronomic optima.

   Using a Crop Modeling Framework for Precision Cost-Benefit Analysis of Variable Seeding and Nitrogen Application Rates · 2019 · compared with agronomic optimum values

   No difference from an alternativeCited by this paper

4. positive
   The variable yield goal zone strategy returned $18.21 to $29.57 per hectare more than uniform management.

   Economic Feasibility of Variable‐Rate Nitrogen Application Utilizing Site‐Specific Management Zones · 2004 · compared with uniform N management

   No difference from an alternative

5. positive
   Nitrogen deficiency decreased grain yield, especially in older maize hybrids.

   Effects of Nitrogen Deficiency on Photosynthetic Traits of Maize Hybrids Released in Different Years · 2005

   No difference from an alternativeAbout lacking this nutrient, so it counts the other way round

6. positive
   The maximum agronomic yield of corn was obtained at 227 kg N ha1 in 1990.

   Field chlorophyll measurements for evaluation of corn nitrogen status¹ · 1992

   No difference from an alternative

7. positive
   Increasing fertilizer from 90 to 150 kg N ha−1 slightly increased corn yield.

   Nitrous oxide fluxes from corn fields: on‐farm assessment of the amount and timing of nitrogen fertilizer · 2009 · compared with 90

   No difference from an alternative

8. positive
   At R3, nitrogen increased grain yield in extremely N-deficient maize without restoring the maximum.

   Maize Response to Time of Nitrogen Application as Affected by Level of Nitrogen Deficiency · 2000

   No difference from an alternative

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