How do we work out the amount of nitrogen loss that can be attributed to percolation and leaching.?

Question

Nitrogen Budget of a Danish dairy farm of 44 cows

Input/output

Mass of (N) kg per year

Fertilizres- 4741

Fodder- 4009

Seed Grain- 19

new animals - 4

Biological N fixation - 600

Dry deposition from the atmosphere- 646

Milk- 1092

Meat- 303

Cereal -120

Denitrification and ammona evaporation- 1002

percolation and leaching- ?

Answer 1

Double click on the following websites:

http://www.sciencedirect.com/science?_ob...

http://www.springerlink.com/content/w257...

http://digitalcommons.uconn.edu/cgi/view...

http://www.horticultureworld.net/Lettuce...

http://transectpoints.blogspot.com/2006/...

http://www.springerlink.com/content/y626...

http://www.sciencedirect.com/science?_ob...

http://www.who.int/water_sanitation_heal...

http://library.wur.nl/wda/dissertations/...

http://diss-epsilon.slu.se/perl/oai?verb...

Answer 2

Hmm good question.

Answer 3

It is going to be hard to come up with an exact answer to your question here. The percolation and leaching loss of N is going to depend on many environmental factors, such as soil type and rainfall amount , which you can't control. Also factors than you can control like the method and depth of placement as well as the frequency of application of your Nitrogen fertilizers. I would check with your extension service or someone at a university to get a better handle on this figure. Luck.

Answer 4

in the U S A   a simple soil test is all that s needed