. 2022 Feb 25;13:809377. doi: 10.3389/fpls.2022.809377

Table 2.

Characterization of the experimental and management conditions of each experimental trial.

ID^a	Planting date	Trial period	Experimental design	Treatments	Nitrogen fertilization	Type of harvest	Use of irrigation
GG.IGA.15	March 6, 2014	March 14, 2015 to January 2, 2016	Randomized block design	Harvest frequencies based on fixed days (14, 21, 28, 35, 42, and 49 days) of the rest period	200 kg of N ha⁻¹ year⁻¹ in the form of urea (45% N)	Mechanical cutting	No
GG.IGA.17-18	March 6, 2014	September 2, 2017 to September 12, 2018	Randomized block design	Harvest intensities based on the residue height (15, 25, 35, 45, and 55 cm)	200 kg of N ha⁻¹ year⁻¹ in the form of urea (45% N)	Mechanical cutting	No
GG.PEN.03	January 2003	August 3, 2003 to November 8, 2003	Completely randomized design	Harvest frequencies based on time needed for expansion of 1.5, 2.5, and 3.5 new sheets per tiller	160 kg of N ha⁻¹ year⁻¹ in the form of urea (45% N)	Grazed by sheep	Yes
GG.PEN.05–06	January 2003	October 25, 2005 to March 7, 2006	Completely randomized design	Harvest frequencies in combination with post-grazing residues	220 kg of N ha⁻¹ year⁻¹ in the form of urea (45% N).	Grazed by sheep	Yes
MG.IGA.15	May 20, 2014	February 14, 2015 to August 5, 2015	Completely randomized design	Nitrogen fertilization (control, 100, 200, 300, 400, and 500 kg ha⁻¹ year⁻¹)	Same as treatments	Mechanical cutting	No
MG.FOR.09	September 2008	July 14, 2009 to October 18, 2009	Completely randomized design	Nitrogen fertilization (control, 400, 800, and 1,200 kg ha⁻¹ year⁻¹)	Same as treatments	Grazed by sheep	Yes

Identification of the experimental trial.