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Table 1 Outline of experimental agronomy and sampling events for four experiments in 2016 and 2017

From: Testing deep placement of an 15N tracer as a method for in situ deep root phenotyping of wheat, barley and ryegrass

YearExpUnitSpeciesSowing day15N applicationSampling
(BBCH scale)
Date
Volume of solution (L)Amount of 15N (mg m−1)
201611Winter wheat(00)
1 October 2015
(58)
2 June 2016
50.09.6(89)
20 July 2016
23Spring barley(00)
12 April 2016
(55)
10 June 2016
50.09.6(89)
1 August 2016
201731Spring barley(00)
2 April 2017
(58)
16 June 2017
30.35.4(69)
23 June 2017
236.36.1(89)
28 July 2017
43Ryegrass(00)
27 September 2016
(39)
20 June 2017
43.56.7(39)
15 July 2017
  1. BBCH scale is shown in the parentheses. Exp. is an abbreviation for experiment