Nitrogen is one of the most important nutrients. However, lab tests are not able to measure the amount of nitrogen available over the course of a growing season. Vegetable crops require 10-20 g/m2 of nitrogen, depending on if they are low or high demand. Canola meal has a 6% slower-release nitrogen than bone meal and with a half life around 6 weeks

Blood & bone is 5-8% quick-release nitrogen. This is ideal for early spring and leafy greens. It also has a useful level of phosphorus (3%). It is best not to apply more than 5 g/m2 of N via blood & bone, as this can lead to excessive growth and susceptibility to pests (e.g. aphids)

• In spring, a good combination is 1⁄4 blood and bone, and 3⁄4 canola meal. This works out to 30g/m2 blood and bone and 125 g/m2 seed meal. Add more depending on individual crop demand

Note: If applying as part of an agronomist report avoid blood and bone which has had extra potassium and other minerals added as this will put your soil amendment out of balance

PDF Data Sheet