Grain Yield Response of Corn (Zea mays L.) to Nitrogen Management Practices and Flooding
| Autor: | Alexander J. Lindsey, S. K. Harrison, Steven W. Culman, Taylor E Dill |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Yield (engineering) chemistry.chemical_element Plant Science 01 natural sciences nitrogen Animal science flooding Soil nitrate lcsh:Botany parasitic diseases sidedress Ecology Evolution Behavior and Systematics Mathematics Ecology fungi Flooding (psychology) Nitrogen management food and beverages 04 agricultural and veterinary sciences flood yield Nitrogen humanities Zea mays lcsh:QK1-989 corn chemistry N application 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Grain yield geographic locations 010606 plant biology & botany |
| Zdroj: | Plants, Vol 9, Iss 3, p 348 (2020) Plants Volume 9 Issue 3 |
| ISSN: | 2223-7747 |
| Popis: | Flooding can reduce corn growth and yield, but nitrogen (N) management practices may alter the degree to which plants are negatively impacted. Damage caused by flooded conditions may also affect the utilization of a post-flood N application to increase yield. The objectives of this study were to evaluate how pre-plant and pre-plant plus post-flood N applications contribute to corn growth and yield following flood conditions and to quantify the partial return of employing different N management strategies in the event of a flood. A field study was conducted in Ohio using four flood durations (FD 0, 2, 4, or 6 days initiated at V4 to V5) and three N management practices (0 kg N ha&minus 1, 134 kg N ha&minus 1 applied pre-plant, and 134 pre-plant + 67 kg N ha&minus 1 applied post-flooding). Application of 134 kg N ha&minus 1 increased yield compared to 0 kg N ha&minus 1 by 65%, 68%, 43% and 16% for 0 d, 2 d, 4 d, and 6 d FD, respectively the application of 134 + 67 kg N ha&minus 1 increased grain yield compared to 134 kg N ha&minus 1 by 7%, 27%, 70%, or 55% for 0 d, 2 d, 4 d, or 6 d FD, respectively. Partial return analysis produced similar results to those for grain yield. Results suggest that in regions prone to early-season flooding, additional N applied post-flood can improve yield and partial return compared to the application of pre-plant alone at a lower rate or no N. Results indicate that total soil nitrate-N levels two weeks after flood initiation may serve as a good predictor of yield. |
| Databáze: | OpenAIRE |
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