Nitrate-Nitrogen Leaching from Onion Bed under Furrow and Drip Irrigation Systems

Table 3

Type, date, and amount of N fertilizer applied in furrow- and drip-irrigated onion fields in NM in 2006–2009.

Field	Irrigation system	Fertilizer type	Date of application	Amount of application (kg N ha^−1)
			2/23/2007	49.2
			3/16/2007	49.2
			3/27/2007	49.2
			4/05/2007	49.2
			4/13/2007	49.2
PSRC	Furrow irrigated	URAN (26-0-0-6)	4/20/2007	49.2
			10/10/2008	49.2
			2/24/2009	49.2
			3/12/2009	49.2
			3/24/2009	49.2
			4/14/2009	49.2
			4/26/2009	49.2
			11/9/2006	17.9
			11/18/2006	23.9
			12/16/2006	23.9
			1/13/2007	51.1
			2/10/2007	36.5
			3/27/2007	31.8
			3/30/2007	47.8
FGRC	Drip irrigated	URAN (26-0-0-6)	5/05/2007	59.0
			3/17/2008	24.6
			3/25/2008	33.2
			4/14/2008	46.0
			4/28/2008	22.0
			5/07/2008	36.0
			5/22/2008	28.4
			6/18/2008	58.0
			6/30/2008	38.2

PSRC: Plant Science Research Center, FGRC: Fabian Garcia Research Center;
URAN: Urea ammonium nitrate.