One Thousand Questions in California Agriculture Answered Part 19
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Citrus Budding.
I wish to bud some Maltese blood orange trees to pomelos and lemons.
Will they make good stock for them, and, if so, is it necessary to cut below the original bud?
It is possible to bud as you propose, and it is not necessary to go back to the old stock. Work in above the forks.
No Citrus Fruits on Lemon Roots.
Would it be any advantage to bud the Was.h.i.+ngton Navel on grapefruit and lemon roots?
The grapefruit or pomelo is a good root for the orange, and some propagators prefer it. The lemon root is not used at present, because of its effect in causing a coa.r.s.e growth of tree and fruit and because it is more subject to disease than the orange root. In fact, we grow nearly all lemons on orange roots.
Budding Oranges.
My first attempt at budding, I cut 20 buds and immediately inserted in stock of Mexican sour orange "Amataca." I left bands on them for ten days at which time about half seemed to have "stuck," but after a few days the bark curled away and the buds dried up and died. I then tried again, but left the bands on for thirteen days and lightly tied strings around below the bud to prevent the bark from curling, and also put grafting wax in the cut and over the bud. These appeared fresh and green at time of taking off the bands, but three weeks later I found them rotted. The grafting wax used was made of beeswax, resin, olive oil and a small amount of lard to soften it. Do you think that the action of the lard on the buds would cause them to rot?
Consider first whether the buds which you use are sufficiently developed; that is, a sufficient amount of hardness and maturity attained by the twig from which you took these buds. Second, use a waxed band, drawing it quite tightly around the bark, above and below the bud, covering the bud itself without too much pressure for several days, then loosening the band somewhat, but carefully replacing over all but the bud point. It is necessary to exclude the air sufficiently, but not wholly. The use of a soft fat like olive oil or lard is not desirable.
If you use oil at all for the purpose of softening, linseed oil, as used by painters, is safer because of its disposition to dry without so much penetration. Having used olive oil and lard together you had too much soft fatty material.
Budding Orange Seedlings in the Orchard.
What are the objections or advantages of planting sour stock seedlings where one wishes the trees and one or two years later bud into the branches instead of budding the young stock low on the trunk?
Planting the seedling and at some future time cutting back the branches and grafting in the head above the forks is an expensive operation and loses time in getting fruit. You will get very irregular trees and be disappointed in the amount of re-working you will have to do. Suckers must be always watched for; that has to be done anyway, but a sucker from a wild stock is worse in effects if you happen to overlook it.
Avoid all such trouble by planting good clean trees budded in nursery rows. You may have to do rebudding later, if you want to change varieties, and that is trouble enough. Do not rush at the beginning into all the difficulties there are.
Grapefruit and Nuts.
Peaches, pears and plums predominate in this section, but would not grapefruit, almonds and English walnuts be just as profitable? What is your idea about English walnuts on black walnut root?
You can expect grapefruit to succeed under conditions which favor the orange. Therefore, if oranges are doing well in your district, grapefruit might also be expected to succeed on the same soils and with the same treatment. Planting of almonds should proceed upon a demonstration that the immediate location is suited to almonds, because they are very early to start and very subject to spring frost and should not be planted unless you can find bearing trees which have demonstrated their acceptance of the situation by regular and profitable crops.
English walnuts are less subject to frosts because they start much later in the season. They need, however, deep, rich land which will be sure not to dry out during the summer. English walnuts are a perfect success upon the California black walnut root.
Soil and Situation for Oranges.
Is it absolutely essential that orange trees be planted on a southern slope, or will they thrive as well on any slope? What is the minimum depth of soil required for orange trees? How can I tell whether the soil is good for oranges?
Orange trees are grown successfully on all slopes, although in particular localities certain exposures may be decidedly best, as must be learned by local observation. How shallow a soil will suit orange trees depends upon how water and fertilizer are applied; on a shallow soil more fertilizer and more frequent use of water in smaller quant.i.ties. Any soil which has grown good grain crops may be used for orange growing if the moisture supply is never too scant and any excess is currently disposed of by good drainage. There can be no arbitrary rule either for exposure, depth or texture of soils, because oranges are being successfully grown on medium loam to heavy clay loam, providing the moisture supply is kept right.
Transplanting Orange Trees.
Can you transplant trees two years old with safety to another location in same grove, same soil; etc.?
Yes; and you can move them a greater distance, if you like. Take up the trees with a good ball of earth, transplanting in the spring when the ground has become well warmed, just about at the time when new growth begins to appear on the tree. The top of the tree should he cut back somewhat and the leaves should be removed if they show a disposition to wilt. You should also whitewash or otherwise protect the bark from sunburn if the foliage should be removed.
Protecting Young Citrus Trees.
Is it necessary to have young orange trees covered or leave them uncovered during the winter months?
It is desirable to cover with burlaps or bale with cornstalks, straw or some other coa.r.s.e litter, all young trees which are being planted in untried places; and even where old trees are safe, young trees which go into the frost period with new growth of immature wood should be thus protected. Do not use too much stuff nor bundle too tightly.
Not Orange on the Osage.
Can the Navel orange be grafted on the osage orange? I understand it is done in Florida, and would like to know if it has been tried in California.
It cannot. It has not been done in Florida nor anywhere else. The osage orange is not an orange at all. The tree is not a member of the citrus family.
No Pollenizer for Navels.
One Thousand Questions in California Agriculture Answered Part 19
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