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- Title
LONG-TERM BENEFITS OF CONTROLLED DRAINAGE.
- Authors
Madramootoo, Chandra A.; Essien, Mfon; Ekwuknife, Kosoluchukwu
- Abstract
Conventional tile drainage is essential for crop production in Eastern Canada. It is of increasing interest for cereal and grain producers, especially in light of potential agronomic and environmental benefits. Based on data collected over a 13-year period at an intensive maize production site in southern Quebec, we found that controlled drainage has an overall positive effect on grain yield. In some years, depending on precipitation intensities and timing, nitrous oxide (N2O) fluxes under controlled drainage were greater than under conventional tile drainage. In other years, controlled drainage had 43% lower N2O emissions. Controlled drainage significantly reduced NO3-N contamination and tended to increase crop yield. It can be a beneficial management practice to be adopted on subsurface-drained croplands.
- Subjects
QUEBEC (Quebec); CANADA; DRAINAGE; CROP yields; SUBSURFACE drainage; AGRICULTURAL productivity; GRAIN yields
- Publication
Journal of the ASABE, 2024, Vol 67, Issue 3, p565
- ISSN
2769-3295
- Publication type
Article
- DOI
10.13031/ja.15542