Table 1 Outline of experimental agronomy and sampling events for four experiments in 2016 and 2017
Year | Exp | Unit | Species | Sowing day | 15N application | Sampling | ||
|---|---|---|---|---|---|---|---|---|
(BBCH scale) Date | Volume of solution (L) | Amount of 15N (mg m−1) | ||||||
2016 | 1 | 1 | Winter wheat | (00) 1 October 2015 | (58) 2 June 2016 | 50.0 | 9.6 | (89) 20 July 2016 |
2 | 3 | Spring barley | (00) 12 April 2016 | (55) 10 June 2016 | 50.0 | 9.6 | (89) 1 August 2016 | |
2017 | 3 | 1 | Spring barley | (00) 2 April 2017 | (58) 16 June 2017 | 30.3 | 5.4 | (69) 23 June 2017 |
2 | 36.3 | 6.1 | (89) 28 July 2017 | |||||
4 | 3 | Ryegrass | (00) 27 September 2016 | (39) 20 June 2017 | 43.5 | 6.7 | (39) 15 July 2017 | |