There is a farmer in Australia called Peter Andrews....
peter andrews also has fourum
Let’s talk about rising salts in the demise of forest species: When rain falls on forests we have water storage. When forests are removed we have evaporation. When forests absorb this rain it travels downwards and takes with it salts produced from the breakdown of rocks. The trees act as biological pumps that keep these salts at deep levels. Any evaporation from the leaves of the tree is pure water. This is all good for the atmosphere and the soil. When the forests are removed and the salt levels rise to three feet below the surface then trees are suddenly and mysteriously affected by bugs and pathogens. The real cause is the imbalance in the soil caused by rising salts. The onslaught on the tree makes it susceptible to pests and disease. When these trees die and salt levels rise higher, then crops are affected too and become weakened. When salt levels rise to the surface then we have created an inhospitable soil environment that is easily seen.
rose macaskie wrote: I was going to suggest tamarisks for curing salty land, you could biomine the salt off the branches so cleaning up the land.
I know that certain fungi actually lock up the salt and make the land useful again. Heavy mulching with enough humidity can bring about this kind of fungi growth. Check out Geoff Lawton's video "Greening the Desert" available on YouTube. This is what happened when they took the worst land imaginable - like a dust bowl.... in an area with the lowest rainfall of any nation and turned it into land producing figs in only 4 years. This was the quintessential in Permaculture success. No project could be as tough as this.... and it was extremely successful.
rose macaskie wrote:
DO YOU KNOW IF SALT CAN BE BROKEN DOWN IF PLANTS OF FUNGI OR OTHER ORGANISMS BREAK DOWN THE SALT INTO SODIUM AND CHLORINE can the plant then use them to form molecules which include sodiom or chlorine and are not salt . i am going to correst the block capitals later have to go out now. rose.