30 



THE CUBA R E V I E ^^' 



EXPERIMENTS WITH AVOCADOS AND MANGOES 



THE A\OCADO YIELDING TO NEW METHODS OF MULTIPLICATION 



GRAFTING OF MANGO SEEDLINGS SECURE GOOD RESULTS 



PROPAGATION TIME SHORTENED FOR 

 AVOCADOS AND MANGOES 



Continuation of experiments in methods 

 of propagating the avocado and mango has 

 developed the fact that these fruits may be 

 inarched or budded almost with as much 

 facility- as is known to be the case with 

 fruits of temperate climates. The difficul- 

 ties which had hitherto made the propaga- 

 tion of superior varieties of avocados and 

 mangoes uncertain are rapidlj- disappearing. 



Avocado'- ma}' be budded when thej' are 

 about nve-iixteenths of an inch in diameter 

 and will be ready for planting in garden or 

 orchard in about a 3"ear from the germina- 

 tion of the seed. 



Another means of shortening the time 

 reqmred in propagation has been the in- 

 arching of very j-oung seedlings. For this 

 purpose the seedlings are cared for in the 

 usual way and when about five-sixteenths 

 of an inch in diameter are transplanted to 

 pots or boxes, placing the stem to one side 

 rather than in the center so as to facilitate 

 getting it into contact with the scion. A 

 ven,- convenient substitute for a pot Has 

 been suggested by Oliver. This consists 

 of a burlap wrapping. Burlap is cut in 

 strips of suitable size to hold the plants and 

 on this is placed a mixture of soil, sand 

 and sphagnum moss. The ball of soil sur- 

 rounding the roots is placed upon this and 

 the whole is wrapped and tied. The ad- 

 vantages of this device are that it is light, 

 compact and less clums}- than a pot and 

 if necessary can be tied to a branch of the 

 tree, thus eliminating the benches required 



to support pots. But even if the bench is 

 used, as sometimes seems desirable, a great 

 man}' more plants can be placed upon it in 

 wrappings than in pots. 



The inarching process for these ver}' 

 young seedlings is precisely the same as 

 that for older plants and need not be 

 further described here. It has been found 

 advantageous to fertilize the seedlings 

 about once in two weeks by the use of a 

 small amount of fertilizer added to the 

 water. In the case of avocados a union is 

 effected in about six weeks. 



Thus the avocado, which a few years 

 ago was thought to be difficult or almost 

 impossible of a sexual propagation is yield- 

 ing to many methods of multiplication. 



The grafting of ver}' young seedlings of 

 the mango has been tested along the same 

 lines as practiced with the avocado and 

 with equally good results. The mangoes 

 are better to be a little older than the avo- 

 cado because they do not so quickly ac- 

 quire the desired diameter of stem and 

 because most of the shoots of the mango 

 trees which are to be used as scions are of 

 considerable size. It has also been found 

 necessarv' to allow the mango inarches 

 eight or nine weeks to unite, this being 

 at least two weeks longer than the avocado 

 requires. — Philippine Review. 



NEW DIRECTOR APPOINTED 



The President named Dr. Gaston Alfonso 

 Cuadrado, the well known chemist, as di- 

 rector of the agricultural station at San- 

 tiago de las Vegas. 



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