Drainage water management effect on corn planting date in southeast Iowa
| Autor: | Aaron L.M. Daigh, Linda R. Schott, Ainis Lagzdins, Gregory L. Brenneman, Matthew J. Helmers, Carl H. Pederson |
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| Rok vydání: | 2017 |
| Předmět: |
Water table
Trafficability food and beverages Soil Science Sowing Growing season 04 agricultural and veterinary sciences 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Agronomy Nitrate chemistry Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Drainage Agronomy and Crop Science Water content 0105 earth and related environmental sciences Nature and Landscape Conservation Water Science and Technology |
| Zdroj: | Journal of Soil and Water Conservation. 72:564-574 |
| ISSN: | 1941-3300 0022-4561 |
| Popis: | In Iowa, producers achieve an adequate growing season for high yielding corn (Zea mays L.) by beginning field activities in a timely fashion. Subsurface drainage allows for early field activities by improving trafficability and decreasing excess water stress to crops on poorly drained soils. Drainage water management practices reduce drainage volumes and nitrate (NO3) loss by maintaining the water table closer to the ground surface when compared to conventional drainage systems. The objective of this study was to determine the effect of shallow, controlled, conventional, and no drainage on depth to water table, volumetric water content, and soil temperature during a 51-day period, from mid-April through May, to evaluate if drainage water management practices delay planting. At the Iowa State University Southeast Research Farm near Crawfordsville, Iowa, we evaluated eight large-scale research plots with two replicates for each of the four drainage treatments over the 51-day planting period during 2012 to 2015. Each plot was planted half to soybeans (Glycine max [L.] Merr.) and the other half to corn, and the halves rotated every year in accordance with a typical corn–soybean rotation. Conventional and controlled drainage significantly lowered (p |
| Databáze: | OpenAIRE |
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