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Page 27 · DO #459 · 204_Popenoe_Bx33FF29r
- Collection
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Wilson Popenoe (1892–1975) family papers
- Item/Folder
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Preface, Introduction, and The Mango - manuscript and notes (typed and handwritten) - chapters in outline for proposed book with Herbert Wolfe, n.d.
- Digital Object
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DO #459,
page 27
- Collection-level dates
- 1882–1975
Page transcription
wrapped with vinyl film to make a moisture-tight seal. Their advantage is the large number of scions which can be made from a limited supply of twigs, and the shorter time required from planting seeds to setting grafted trees in the orchard.
Approach-grafting, often incorrectly termed inarching, is the easiest method so far as technique is concerned, but one which often produces weak unions and which requires a great deal of labor compared to other methods. A potted seedling is supported close to a suitable twig of the scion variety, a shallow lateral cut a couple of inches long is made on both stock and scion, and the cut areas are placed together and bound firmly in place. In a couple of months the top of the seedling is cut back to the union, the scion twig is severed just below the union, and the potted graft is ready to put in the nursery.
Budding is sometimes used, with the customary shield-bud most common, although patch-budding was the type first used commercially. The method is very similar to that used for citrus fruits, but success is not easy and an experienced budder may have few mango buds unite. Seedlings stocks should be 1/4 to 1/2 in. thick, about 8 to 10 months old. Buds are taken from the next-to-last flush of growth, and may be pre-conditioned by cutting off their subtending leaves about 2 weeks beforehand. It is necessary, of course, that the bark should slip on the stocks. After the bud has united with the stock, the latter should be cut back as in veneer-grafting.
Topwork of established trees to change them into more desirable varieties may be done either by cleft- or veneer-grafting, preferably the latter. Young seedling trees, or unsatisfactory grafted trees, with trunks up to 6 in. diameter, may be veneer-grafted in spring on the trunk or at the base of the main limbs, using scions as described above. After the grafts have united well, the tops of the trees are gradually cut back to the union. With older trees, it is usually better to prune the top back in early winter to leave a foot or so of each main limb, and then to veneer-graft the shoots which develop in the spring as if they were young seedlings. Ordinarily they will be ready to graft in late spring or early summer.