AbstractsChemistry

Accumulation of sodium in soil is a serious problem in arid and semi-arid regions of the world. Millions of acres of once fertile land have been thrown out of cultivation and-millions more are being added every year. The magnitude of the problem can be visualized from the fact that in Alberta alone 10 million acres are either seriously or partially affected by excess salinity and/or exchangeable sodium. In West Pakistan 100,000 acres go out of cultivation annually because of this menace and in the United States, out of 300 million acres under irrigation, between 25 and 30 percent are affected to varying degrees. [...]