Effect of different sources of iron and sulphur on leaf chlorosis, nutrient uptake and yield of groundnut.

The pot experiment conducted in calcareous soil of Saurashtra, India showed that application of lime (20% CaCO3) and excess water (irrigation at −0.3 bar) to the soil enhanced chlorosis in groundnut leaves caused by induced deficiencies of iron, sulphur and zinc, which was recovered by applying agricultural grade chemicals containing iron, sulphur and zinc. This chlorosis caused 29.8 and 19.1% reduction in pod yield of groundnut due to lime and excess water, respectively in the untreated control pot and 17.1 and 9.6%, respectively in the pot treated with different chemicals.