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close this bookSoils, Crops and Fertilizer Use: A Field Manual for Development Workers (Peace Corps, 1986, 338 p.)
close this folderChapter 11: Liming soils
View the document(introduction...)
View the documentThe purpose of liming
View the documentWhen is liming needed?
View the documentHow to measure soil pH
View the documentHow to calculate the actual amount of lime needed
View the documentHow and when to lime
View the documentDon't overlime!

When is liming needed?

Most crops will produce satisfactory yields within a pH range of 5.5-7.5, though micronutrient deficiencies (except molybdenum) become more likely above pH 6.8. Some, such as soybeans and alfalfa, don't grow well below pH 6.0. Others, such as pineapple, rice, coffee, potatoes, sweet potatoes, and watermelon, are more tolerant of acid soils than other crops.

TABLE 11-1 Satisfactory Soil pH's for Common Crops