Soil management plant growth

Magistad, O.C., Ayers, A.D., Wadleigh, C.H., Gauch, H.G. Effect of salt concentration, kind of salt, and climate on plant growth in sand cultures. Plant Physiol. 18(2), 151-166 (1943) Meiri, A., Plant, Z. Crop production and management under saline conditions. Plant and Soil 89(1), 253-271 (1985)... 

The difficulty in allelopathic studies has been to link the allelochemicals directly with the plant growth problems. Before the role of crop residue, soil management, or other practices in allelopathic problems can be evaluated, a direct link must be established between the source or production of the chemicals and plant damage. Plant damage may be caused by the chemicals produced from residue decomposition or from the microorganisms residing in the residues. 

Clapp, C. E., Chen, Y., Hayes, M. H. B., and Cheng, H. H. (2001). Plant growth promoting activity of humic substances. In Understanding and Managing Organic Matter in Soils, Sediments, and Waters, Swift, R. S., and Sparks, K. M., eds., International Humic Science Society, St. Paul, MN, pp. 243-255. 

Salt-affected soils are common in arid and semiarid regions, where annual precipitation is insufficient to meet the evapotranspiration needs of plants. As a Tesult, salts are not leached from the soil. Instead, they accumulate in amounts or types detrimental to plant growth. Salt problems are not restricted to arid or semiarid regions, however. They can develop in subhumid and humid regions under appropriate conditions, Basic principles of soil chemistry directly apply to the study and management of salt-affected soils. 

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