Numerous other cases might be given, but the above are sufficient to show the earliness at which our trees bear, and the crops they yield. Trees in full bearing often yield up to 40 cases, but these are usually old seedlings, which bear a very heavy crop one year and a comparatively light crop the next. All the instances I have quoted are from worked trees, which are found to give the most regular and constant yields. Until quite recently, citrus-trees were almost entirely grown from seed in this State, with the result that we have a very large number of types, and many crosses between different species. This was not advisable, as a uniformity in type is desirable for marketing, hence the greater number of trees now being planted are of selected varieties of proved merit. Many of the seedlings have produced most excellent fruit, but a seedling has usually the disadvantage of being very full of seeds, and having a lot of rag (the indigestible fibre round the pulp) as compared with the worked varieties, which have either no seeds or very few seeds and little rag. Seedlings are also of many types, and they produce a lot of small fruit, thereby making an uneven sample, whereas worked trees produce fruit even in size and quality. Seedlings are probably the hardiest, and will stand the most neglect, but experience is showing that worked trees are the most profitable to grow. The growth of all kinds of citrus-trees from seed is a very simple matter, all that is necessary being a well-prepared seed bed of friable soil that is partially shaded from the heat of the sun, so as to protect the young plants. Selected, fully ripe fruit from well-grown, prolific, healthy trees is taken, and the seeds sown in rows in the seed bed, or broadcast when weeds are not likely to be any trouble. Fresh seed germinates quickly, and the young plants are soon ready to be transplanted into the nursery bed, where they are either worked over or allowed to remain seedlings. At twelve months old, from seed, a tree will have a stem-diameter of about ¾-inch, and a height of 3 to 4 feet, a growth about twice that made in the Southern States.
The general remarks I have given respecting our fruit soils apply with equal force to those best adapted for citrus culture—viz., they must possess perfect drainage, and be of a friable nature. We are growing most of the best varieties of citrus fruit, the original trees from which they are now being propagated having been introduced into the State from the most celebrated citrus-producing districts in the world, and, as stated and shown by the accompanying illustrations, they are all doing well.
The Washington Navel, the variety of orange most commonly grown in California, does remarkably well on our rich volcanic scrub soils, where it has proved itself a regular bearer of high-class fruit. The Mediterranean Sweet Orange, Valencia Late, and Jaffa also do well in many parts, the Valencia Late adapting itself to most districts. Many other kinds of oranges are grown, but the varieties mentioned are some of the best, and are the ones now being planted in the greatest quantity.
Spray of Orange Blossom.
In mandarins, all kinds do remarkably well, and I never saw this fruit produced to greater perfection in any part of the world than it is in Queensland. The varieties most commonly grown are: The Emperor or Canton, the Scarlet or Scarlet Emperor, Thorny or Tangerine, and Beauty of Glen Retreat, though there are many types of seedlings in addition to these well-known sorts. The grape fruit which is now so popular in America does well, but, so far, has not taken on in our markets. Citrons grow practically wild, and produce good fruit, for which there is a limited demand for peel. Their cultivation could be extended with ease were there a better demand for peel. The Seville Orange, which is used for the manufacture of marmalade, is an exceptionally hardy and prolific tree, and, were it required, we could easily grow enough of this fruit to supply the world. Lemons do best inland, or at an elevation of some 2,000 feet above sea-level, as this fruit is apt to become too coarse in the skin when grown in a humid climate. In suitable localities very good fruit can be grown, which compares very favourably with the European or American grown fruit.
The lime does well in the more humid districts, taking the place of the lemon, and one variety—the Tahiti—has proved itself to be a heavy and regular bearer. The West Indian lime, from which the lime juice of commerce is made, is very easily grown, particularly in the more tropical parts, where it is often met with growing in an entirely uncultivated condition, and bearing heavy crops of fruit. Kumquats are easily grown, and are heavy bearers, and all the different types of pomelos or shaddocks do well. Seedlings of the latter are very hardy, as they are deep-rooted plants that stand dry weather well and are, consequently, not liable to injury during dry spells. There is very little demand for the fruit, but I am of opinion that the seedlings will prove to be of value as stocks on which to work our best kinds of oranges.
The culture of all kinds of citrus fruits, when grown in suitable soil, is by no means difficult, as it consists mainly of keeping the land well stirred and keeping down all weed growth during dry spells, the keeping of the trees well pruned out in the centre, and the keeping in check of all diseases, both insect and fungus. Although citrus fruits are subject to many pests, they are for the most part easily kept in check by either spraying or cyaniding, or both, provided that reasonable care is taken, and the pests are destroyed before they have obtained control. Taken as a whole, our citrus fruits are remarkably clean, and compare more than favourably with those grown in the Southern States. The culture of these fruits is extending rapidly, with a corresponding increase in production, but, despite this, our prices have been better during the past season than for some years, as the quality of our fruit is such that it will command a good market. When properly handled, it has good keeping qualities, and I have no doubt that we will, in time, be able to supply the markets of the Old and New Worlds with good fruit, in the best of condition, at the time of the year that their markets are bare of locally-grown citrus fruit.
There is a good opening for the growth of citrus fruits in this State, as the writer knows of no country where they do better, where they can be produced with as little trouble and expense, where they can be successfully grown over such a large area, or where the soil and climate is more suited to the production of fruits of the highest quality as in Queensland.