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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