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Page 43 · DO #1164 · 27_Morrison_Bx7FF8r
- Collection
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Benjamin Yoe Morrison (1891–1966) papers
- Item/Folder
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Report on a trip to Colombia, 1943–1944
- Digital Object
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DO #1164,
page 43
- Collection-level dates
- 1915–1965, n.d.
Page transcription
planting the seed. Some years ago shield budding of avocados was usual, but the stock has to be 6 or 8 months old and buds do not develop as rapidly as where tip grafts are used. Budded or grafted avocado plants never are shipped bare rooted and, so far as I know, their leaves are never entirely removed for shipment, although where shipment involves a long period, it certainly would be desirable to reduce the leaf surface materially.
"Mango seedlings are ready for budding or grafting in about 10 to 12 months from planting the seed. Well-matured terminal shoots are preferred as scions much as with avocados, although it is possible to split terminal shoots of mangoes to provide more than one piece of propagating material from each shoot. This scion material is tapered to a thin edge on one side only and inserted laterally under a flap of bark on the side of a seedling near the ground, the tip of the seedling sometimes being cut off at time of grafting or not until the union of stock and scion has been effected. Shield budding may be done but is less successful and is little used nowadays. Budded or grafted seedlings are not removed from the nursery until about a year old, as a well developed root system is a prerequisite for successful transplanting. In transplanting, a ball of earth on the roots is desirable, but bare-rooted plants have been shipped long distances with good results. Coral Reef Nursery reports such successful shipment to the Hawaiian Islands. In transplanting, some pruning back and reduction of leaves is desirable, the amount depending on method of transplanting and distance moved.
"Inarching of mangoes can be undertaken on small-scale projects, but on larger ones, less time, labor, and material would be expended in field grafting. Inarching also necessitates growing seedlings in boxes and with box-grown mangoes, root restriction seems to affect the seedlings and it is more difficult to get them into satisfactory budding, grafting, or inarching condition.
"Although I do not know of any attempts to ship either avocados or mangoes as "budded stumps", as is done with Hevea, the general opinion is that it would meet with failure, especially with field-grown mangoes. Shipment for short distances of freshly grafted or budded avocados probably could be done, but the tender tip grafts would require very careful handling to avoid breakage or injury.
"The question of maximum safe age for stocks involves several considerations since both avocados and mangoes may be successfully grafted at any reasonable age of the trees, even after they have been in production many years. It is probable that it would be difficult to keep boxed avocados or closely-spaced nursery-grown mangoes in good propagating condition for more than 18 months to 2 years. Increased size of the older plants would add materially to handling and shipping costs.