If you own land, any amount of land, it is important to build soil fertility weither you are growing food, or just trees for fuel and building materials. Nutrients make a big difference in Canada's short growing season. You do not need domestic animals to provide manure or fertilizer.

Use what you have already, what everybody has... your own urine. It costs nothing. In fact you already bought the groceries with the nutrients in them. Dilute your urine with water, about 8 times, and pour directly where it is needed in the vegie patch or under trees and fruit bushes. This retains nutrient that would be lost and wasted down the toilet where it pollutes waterways or sits in septic tanks making unused methane gas. Urine provides nitrogen to the soil and plants and useful micronutrients all from your food.

Another great addition to vegie gardens and trees is wood ash. Often I see ash put out in municipal garbage or piled at the back of the house, again a total waste. Exporting nutrient in the garbage and away from your land is really your financial loss. Nutrients have a value and when you flush them or lose them in the garbage you lose money/assets. Wood ash contains quite a bit of potassium, phosporus calcium and magnesium and a few other micronutrients. Combined with urine this fertilizer is very good for plants. The missing part is organic matter and this the plants make themselves by growing roots annually deep into the soil and dropping leaves, stems and flowers on the soil making a compost or worm food.

I have been using this system of land/soil improvement for over 25 years and my garden looks very lush in July, not at all like the rather barren areas beneath my white cedar trees.

Try this and compare your results.

Your next step may be to build a very simple compost toilet, a plastic bucket in a box, which can provide/conserve even more nutrient and organic matter. Human dung requires more processing/aging than urine and burial is the main health precaution. Dung breaks down quickly in live active soil and is the agricultural foundation of most civilizations.