Productivity of Onions Using Subsurface Drip Irrigation versus Furrow Irrigation Systems with an Internet Based Irrigation Scheduling Program

Table 1

Production operations and crop growth parameters for the two seasons this study was conducted.

Operation	2012-2013		2013-2014
	Los Ebanos; SDI system	Los Ebanos; furrow system	Weslaco; SDI system	Weslaco; furrow system
Planting	November 8	November 8	October 24	October 24
First in-season irrigation	November 4	November 4	October 28	October 28
Preplant fertilization	October 1	October 1	None	None
1st fertilizer application	November 22	November 22	October 26	October 26
2nd fertilizer application	December 22	December 22	January 17	January 17
3rd fertilizer	January 28	January 2	February 5	January 28
4th fertilizer	February 15	February 15	February 10	February 10
5th fertilizer	March 8	None	February 21	None
Last irrigation	April 5	April 5	April 7	April 7
Harvest	April 22	April 22	April 25	April 25
Rainfall growing season	140	140	294	294
Length of growing season (days)^a	158	158	156	156

From planting until harvest.