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One Thousand Questions in California Agriculture Answered Part 13

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Pollination of Pears.

Is it necessary in growing the Comice pear successfully, to put some other pear near for the purpose of pollination in order to make it successful? Will the ordinary Bartlett pear do for pollination?

The Comice pear blooms with the Bartlett, and would therefore presumably be of pollinizing benefit to the Bartlett if the latter should require such treatment. Common experience in California, however, is that the Bartlett is self-fertile and not self-sterile as it is commonly reported in Eastern publications. California practice is, then, to plant Bartletts solidly without reference to preparation for pollination.

Taking the matter the other way around, the Bartlett will do for pollination of the Comice probably, if that should be necessary.

Lye-Peeling Peaches.



Please give the formula for peeling peaches by dipping them in caustic soda or lye.

Lye for peeling peaches is used at the rate of half to one pound to the gallon of water, according to the strength of the lye, which you can determine by the quickness with which it acts. The lye water is kept boiling, and the fruit is dipped in wire baskets, only being allowed to remain in the lye a few seconds, and is then plunged at once into fresh water. You must be careful to keep the lye boiling hot, also either to use running water for rinsing or change it very frequently, for you have to rely on fresh water to remove the lye, or the fruit is likely to be stained.

Aged Peach Trees.

What should be done with peach trees 35 years old which are becoming unthrifty, bearing only at the ends of the limbs, etc.?

Old peach trees become bark-bound and need to be cut back to just above the crotch for the forcing out of new branches, this being facilitated, of course, by application of manure, good cultivation of the soil, use of water during the dry season, etc. The peach is, under most conditions, not a long-lived tree, and if your trees are 35 years of age, it is probable that best results could be obtained by grubbing them out and replanting with young trees on new soil if possible. The profitable life of the Eastern peach tree is put down at five or six years. In California the profitable life of the peach sometimes reaches twenty or more years, if growing under exceptionally good conditions; but 35 years would seem to be at least on the borders of decrepitude.

Growing at the tips shows that you have not pruned annually to induce the growth of new wood lower down.

Renewing Peach Orchard.

Which is the best way to renew an old peach orchard? The trees are about 18 years old, Muirs and Fosters, and are yielding good crops, but some of the trees show decline. Is it best to replace the old ones with new trees or to plant a new orchard in between the old trees and cut out old ones when new trees are three or four years old?

If the trees have sound bodies and are not badly injured by sunburn borers, do none of the things you mention, but would cut back for a new head. Cutting back should be done during the latter half of the dormant period and thinning of shoots to proper balance a new head should be carefully done the following winter. It is a hard job to get young trees to start among old trees and you are apt to get a mixed lot of trees which you will not be proud of. Cut back as suggested or rip out, plow deeply and start anew, placing the rows midway between the old rows.

Will He Have Peaches?

I have a young orchard between five and six years old, mostly of the Lovell variety. I didn't have much of a crop this year. Should I have a good crop next year?

You ought to be able to tell now how full a set of fruit buds you have.

If you do not know what the fruit buds are, ask some neighbor who knows peaches to point them out. If you have a good show of fruit buds, the question in California is not whether they will winter-kill or not, but whether the leaves held late enough the preceding summer and therefore the tree had strength enough to make good strong fruit buds. The late action of the leaves shows that the trees had enough autumn moisture.

You will soon learn to recognize the condition also from the plumpness of the wood which carries the fruit buds. If all has gone well so far, the next point is to spray with the bordeaux mixture in November or December so that the new wood shall not be attacked by the peach blight or shothole fungus. This disease comes on early in the winter, sets the the new bark to gumming and endangers the crop. Then if you have San Jose scale, or if your trees showed much curl-leaf last spring, you ought to spray before the blossom buds show color with the lime-sulphur wash. Supposing that you have good buds now and are willing to protect them as suggested, your trees may be expected to come through with a good crop if seasonal moisture conditions are right.

Peach Fillers in Apple Orchard.

I have heard some talk against planting peach fillers in an apple orchard. What is your opinion on the subject?

There is no objection providing the peach is profitable in the locality; and that point you must look into. The peach trees will not injure the apples unless they are allowed to stand too long. In that case they would interfere with the development of the apple.

Grafting Peach on Almond.

May I expect to get good results by grafting some kind of peach to 19-year-old almond tree? If so, what kind of peach will be best? When shall I do grafting?

Peaches take to the almond all right. Cut off and graft in the branches above the main forking of the tree; leaving at least one large branch to be grafted later or to be cut out entirely if you have peach growth enough to fill the top sufficiently. Graft in any kind of peach you find to be worth growing. Graft toward the latter part of the dormant season, say when the buds are swelling for a new start.

Peaches on Apricot.

I have a three-year-old peach orchard grafted or budded on apricot roots, and interspersed through the orchard are young apricot trees, from half-inch to inch and a half in diameter, which sprang from the root, the peach bud or graft having died. I budded these over to peaches in summer, but the buds all died for some cause. What is now the best course to transform them into peach trees? If a graft, what form of graft, and approximately when should it be made?

You can graft peach scions into the apricot sprouts by taking the peach scions of the varieties you desire while the tree is perfectly dormant, keeping them in a cool place and putting in the grafts just as the buds are beginning to swell on the apricot stock. The scions can be buried in the earth in the shade of a fence or building, selecting a place, however, which is moist enough and yet where the water does not gather.

The ordinary form of top grafting in stems an inch or more in diameter will work well. The half-inch stems can be whip-grafted successfully.

You will have to wax well and see that the wax coating is kept sound until the growth starts.

Replanting After Root-knots.

In digging out some old peach trees, I find now and then a tree affected with root knot. I am burning the root, of course, but as these trees are scattered in the orchard, I wish to plant young trees in same locations, thus preserving the rows. Can new stock be safely put in the earth from which the old tree is removed? If treatment of the soil is essential, what is recommended?

Dig a good large hole, removing the earth, and fill with new earth from between the rows, and in this way healthy growth ought to be obtained, although there is always a disposition in some trees to put on knots.

They should be looked at from time to time and all those affecting the larger stem should be removed and the wound painted with bordeaux mixture.

Buds in Bearing Trees.

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One Thousand Questions in California Agriculture Answered Part 13 summary

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