CITRUS AND OTHER FRUITS 121 



much north of Philadelphia. New American is the 

 most promising variety for northern localities. 

 Russian is most hardy, but the fruit is not so good as 

 Downing, etc. Mulberries may be propagated by 

 cuttings of the ripe wood. 



NECTARINE. This fruit is practically nothing but 

 a smooth-skin peach ; it is not so popular as the 

 peach and is not much grown except in California. 



OUVE. A commercial success only in California. 



ORANGE. In California the orange industry has 

 reached enormous proportions; and in Florida the 

 business is rapidly recovering from the disastrous 

 freezes of a few years ago, the centre of the orchard 

 region having been moved farther south. Seedling 

 groves are not uncommon, but the most satisfactory 

 method of propagation is budding upon sour or sweet 

 orange seedling stocks. " Trees should not be set 

 deeper in the ground than they were in the nursery," 

 says a prominent grower. Cut back the head severely 

 and trim the roots. After the tree is well started but 

 little pruning is required, except to cut out dead or 

 crossed limbs, and watersprouts, etc. A loose, mel- 

 low, well-drained soil, free from hard-pan near the 

 surface, is desirable. The trees need plenty of potash 

 and phosphoric acid, and not too much nitrogen. 



Principal insect and fungous troubles : The rust- 

 mite, red spider, mealy bug, leaf roller, caterpillars, 

 aphis, and the ' ' purple, " " long, " " red, " " circular, ' ' 

 "white," "ribbed," "broad," "black "and San Jose 

 scales, are all enemies of the orange grove, and are 

 fought with the usual remedies whale-oil soap, kero- 

 sene emulsion, arsenate of lead, lime-sulphur-salt, etc. 



