Approximate Nitrogen Requirement of vegetables

Approximate Nitrogen Requirement of vegetables

		lbs/acre/week		kg/hectare/week
Crop	Growth stage	low	high	low	high
Broccoli	early growth	5	15	5.6	16.8
	mid-season	10	20	11.2	22.4
	button formation	15	30	16.8	33.6
	head development	10	20	11.2	22.4
Cucumber	vegetative growth	5	10	5.6	11.2
	early flowering/fruit set	10	20	11.2	22.4
	fruit bulking	10	15	11.2	16.8
	first harvest	5	10	5.6	11.2
Lettuce	early growth	5	10	5.6	11.2
	cupping	10	20	11.2	22.4
	head filling	15	30	16.8	33.6
Melon	vegetative growth	5	10	5.6	11.2
	early flowering/fruit set	10	20	11.2	22.4
	fruit bulking	10	15	11.2	16.8
	first harvest	5	10	5.6	11.2
Pepper	vegetative growth	5	10	5.6	11.2
	early flowering/fruit set	15	30	16.8	33.6
	fruit bulking	15	20	16.8	22.4
	first harvest	5	10	5.6	11.2
Squash	vegetative growth	5	10	5.6	11.2
	early flowering	10	20	11.2	22.4
	first harvest	5	10	5.6	11.2
Tomato	vegetative growth	5	10	5.6	11.2
	early flowering/fruit set	15	20	16.8	22.4
	fruit bulking	10	15	11.2	16.8
	first harvest	5	10	5.6	11.2

Source: Blaine Hansen, 1996. Fertilizing Row Crops With Drip Irrigation Nov/Dec. Irrigation Journal