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.
In the winter, remove the dead floricanes (old fruiting canes) from the hedgerow. Also shorten the lateral branches to about 1Â½ to 2Â½ feet. With primocane-fruiting erect blackberries, cut all canes off just above the ground in the late winter for the best fruit. In the summer, when the primocanes are 3Â½ feet tall, removed the top 6 inches.