Fertilizers and care for pear trees
During the first winter, check the trees after hard ground frost and firm any which have lifted. Pears, particularly young trees, are very sensitive to water shortage. In dry weather, water thoroughly. Watering in late spring or early summer tends to encourage shoot growth, while watering in mid- and late summer aids in fruit swelling. Trees planted against walls are particularly vulnerable to drought, asnear foundations dries out very quickly.
Pears respond more than any other fruit tree to applications of bulky. For the the first three springs after planting, give an annual mulch of well-rotted manure, 5 cm (2”) thick in late spring; spread it over an area equivalent to that covered by the tree’s branches. Keep the manure at least 15 cm (6”) away from the trunk. Supplement this with an annual dressing of 30 g (1 oz) sulphate of ammonia and 15 g (½ oz) of sulphate of potash per sq m (sq yd) applied in late winter or early spring.
Pears are very nitrogen greedy; for this reason they should not be grassed down. There is one exception, however. If you wish to retard the growth of over-vigor,ous cordons or dwarf pyramids, then grassing down is a good method. Trees competing with grass for moisture and nutrients will be slower than those in cultivated ground.