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Calibration of soil test methods for available nitrogen in black soils (Inceptisols) for sorghum

, : Calibration of soil test methods for available nitrogen in black soils (Inceptisols) for sorghum. Journal of the Indian Society of Soil Science 39(2): 383-385

Different soil test methods for available N were evaluated in pot experiments for their suitability for determining the critical level for sorghum in Vertic Ustropepts in Maharashtra, India. Results indicate that alkaline KMnO4-N was the best method for estimating available N in these alkaline, calcareous soils.

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