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Salt Problems

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Problems - Salt

Salt is not a terribly major problem in a collection. Salt deposits tend to build up on the rims of pots, especially if you are using inorganic fertilizers. For that reason, I have largely switched over to an organic fertilizer, seaweed.

Salt deposits is a more serious problem in aquaculture. In a hot tropical climate, the fast rate of evaporation can cause salt to deposit on the upper surface of the medium used to hold the plant in place. Since I use cotton threads, strands of them can become uncrusted with salt. Salt can also deposit on the surface of the cup holding the plant. These deposits can discolour the skin of the plant, or cause scarring.

The photo shows serious damage on the stock plant, a Mrytillocactus geometrizans. The graft is a Melocactus. There is quite a lot of scarring.

Luckily, Mrytillocactus geometrizans is an extremely tough species, so there is little danger. This combo plant was later grafted onto another Mrytillocactus geometrizans stock, and most of the older stock was cut off. More at Melocactus Graft Page.

This photo show salt deposition on cotton threads used to hold the Mammillaria in place. Evaporation in hot weather can cause this if the wad of cotton touches the nutrient solution. An algae explosion can also happen. Such salt depositions can scar or damage the skin of the plant.
The picture shows scarring (the brownish patches) after the salt had been washed off. The plant is either an Echinocactus, a Ferocactus or a very similiar genus.


So, in order to avoid salt depositions, you can:

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  Last modified: 2002-08-26  Copyright © 1997-2002.  Kein-Hong Man.  all rights reserved