The Effects of Potassium Chloride to Counteract the Negative Effects of Side-banded Urea on Plant Establishment
A series of experiments to determine if adding KCl to side-banded urea would increase the safety to the seedlings against the toxic effects of side banded urea, regardless of the separation between the seed and fertilizer. No significant effect was observed, although there was one site-year observed where addition of KCL with urea in the side-banded urea for flax was beneficial.
IPNI-1999-CAN-SK22
See attached photos from the trial site in 2000 showing the variable stand of flax due to band placement relative to the seed row (shallow band on the left). Results and Reports: The use of urea fertilizer as a nitrogen source has increased dramatically during the last 20 years and its higher toxicity relative to ammonium nitrate requires careful management. Read more
Interpretive Summary
| 2000 | Use of Potassium Chloride to Counteract the Negative Effects of Side-Banded Urea on Plant Establishment, 2000 The use of urea fertilizer as an N source has increased dramatically during the last 20 years, and its higher toxicity relative to ammonium nitrate [(NH4)NO3] requires careful management. The objective of this study was to determine if adding KCl (0, 15 and 30 lb K2O/A) to a urea band (0, 60 and 120 lb N/A) placed either in a 1" x 1. |
| 1999 | The Effect of Potassium Chloride to Counteract the Negative Effects of Urea Side-Banded on Plant Establishment Using Different Placement Configurations and Soil Types, 1999 The application of KCl fertilizer in bands with urea has been suggested as an effective means of reducing urea toxicity from the accumulation of both NH3 and nitrite (NO2) in the soil. Accumulations of free NH3 can be very toxic to the roots of newly developing seedlings. |
Updates & Reports
| 1999 | 1999 Annual Report |
| 2001 | 2000 |
| 2001 | Justification |
| 2001 | Investigators |
| 2001 | Objectives |
| 2001 | Project Description |
| 2001 | Reading |
| 2001 | Methodology |
Project Leader
Guy Lafond, Agriculture and Agri-Food Canada
Project Cooperators
Jim Halford
Judy McKell
IPNI Staff
Adrian Johnston
Location
Americas \ Northern America \ CAN \ Saskatchewan