1 (e.g. I > Cl > C > H)  If the first atom of two groups is the same, consider the second atom(s) in the same way as the first. (e.g. -C(CH3)3 > -CH(CH3)2 > -CH2CH3 > -CH3). If this does not assign priority, consider the next atoms until there is a difference.
Fertilize blackberry bushes in the early spring just as they begin to put forth new growth. Use 1 pound of 20-20-20 granular fertilizer for every 25 feet of row, broadcasting it evenly around the base of your shrubs. If you use 10-10-10 fertilizer, apply 2 pounds for every 25 feet of row. Feed blackberry bushes again when they are blooming in midsummer. Do this only if your bushes are not thriving. Apply 1/4 pound of a 34-0-0 fertilizer, also called ammonium nitrate, for every 25 feet of row.
But if youâre using a general purpose fertilizer such as ammonium sulfate, here are some general guidelines for fertilizing blueberries: 1  The amount of fertilizer to apply will depend upon the type of soil you have, its fertility level, the type of fertilizer youâre using, and the age of your blueberry bushes. Using ammonium sulfate as an example, apply 2 tablespoons in early spring, and another 2 tablespoons in late spring for first year bushes.