. Citrus culture in Porto Rico / by Henry C. Henricksen. Citrus fruits Puerto Rico; Fruit-culture Puerto Rico. 8 BULLETIN 3 3, POETO EICO EXPEEIMENT STATION LOCATION OF THE NURSERY In selecting a location for the nursery the water supply should receive first consideration. An abundant supply should be available, and overhead irrigation is very desirable. Preparation of the soil should begin about a year before planting is done. The soil should be deeply plowed and harrowed and then planted with a leguminous crop. This should be plowed under when it has fully developed and left for about three
. Citrus culture in Porto Rico / by Henry C. Henricksen. Citrus fruits Puerto Rico; Fruit-culture Puerto Rico. 8 BULLETIN 3 3, POETO EICO EXPEEIMENT STATION LOCATION OF THE NURSERY In selecting a location for the nursery the water supply should receive first consideration. An abundant supply should be available, and overhead irrigation is very desirable. Preparation of the soil should begin about a year before planting is done. The soil should be deeply plowed and harrowed and then planted with a leguminous crop. This should be plowed under when it has fully developed and left for about three months to disintegrate. During this period the soil should be harrowed frequently and any growth of Para grass (Panicum barbinode), or malojillo as it is locally called, should be Figure 1.—Grapefruit budded ou rough lemon stock and planted on extremely hard soil TREE STOCKS AND THEIR IDENTIFICATION In all citrus-growing countries opinion differs regarding the kind of root stock to be used. This is natural in view of the fact that the problem is complicated. In studying the stocks in the older groves it was found that they consisted of lemon (fig. 1), sour orange (fig. 2), cultivated grapefruit, and some so-called native or wild grape- fruit. They are growing in all the different types of soil and in some of the groves in adjoining rows. Since the different stocks could not be identified except by means of the sprouts (fig. 3) which arise from below the bud union and are seldom present, it became necessary to find a* chemical method permitting of readily differentiating one kind from another. The method found is simple enough for planters to use. The following directions will serve for field use: A piece of root from a tree carry-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Henricksen, H. C.
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