Lime-induced chlorosis

A. A. Mohamed, F. Agnolon, S. Ce.sco, Z. Varanini, and R. Pinton, Incidence of lime-induced chlorosis plant re.sponse mechanism and role of water soluble humic substances. Agrochimica 42 255 (1998). 

E. Jurkevitch, Y. Hadar, and Y. Chen, Involvement of bacterial siderophores in the remedy of lime-induced chlorosis in peanut. Soil Sci. Soc. Am. J. 52 1032 (1988). 

Ilron deficiency is one of the most common plant disorders and almost always presents as a yellowing of leaves, especially between the veins. It is particularly common in alkaline soil, when it is known as lime-induced chlorosis. 

Also known as lime-induced chlorosis, this may be caused by a soil pH that is too high for acid-loving plants, by waterlogging, or by excessive use of phosphate-rich fertilizers. 

Low P availability because the high pH and high concentration of Ca leads to the formation of insoluble calcium-phosphate. However, activity of roots and rhizospheric microorganisms may increase P availability through the excretion of organic acids. Reduction of Fe availability, which in calcifuge species cultivated on calcareous soils causes a yellowish discoloration of leaves (lime-induced chlorosis). 

Contemporary viticulture has been highly delocalized in other continents with pedo-climatic features that can hardly be compared to the European ones. Hence, they need rootstocks with particular features. Although the availability of rootstocks in viticulture is very high (==90) at the moment, no more that five or six are extensively used by growers worldwide. They are selected mainly because they are robust (resistant to water stress and lime-induced chlorosis) and because they are easy to propagate this feature is very important for the nursery business. 

---