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The field experiment was conducted in maize under paired row drip irrigation and fertigation (Nitrogen and potash) during kharif 2016 at Agronomy field unit, College of Agriculture, V.C. Farm, Mandya, University of Agricultural Sciences, Bangalore, Southern dry zone of Karnataka to determine the effect of foliar nutrition of water soluble phosphorus fertilizer application and irrigation levels on budgeting of primary macro nutrients (Viz., nitrogen, phosphorous and potassium). The results revealed that FA of WSPF at 15 or 20 kg ha-1 along with irrigation at 80% CPE recorded higher crop uptake of nitrogen (246.2 to 254.9 kg ha-1), phosphorus (45.7 to 48.1 kg ha-1) and potassium (207.7 to 229.2 kg ha-1) and were comparable with soil application of SSP along with irrigation at 80% CPE. Added this, higher net gain of nitrogen (+ 47.7 kg ha-1) with FA of WSPF at 15 kg ha-1 and lower net loss of phosphorus (-36.53 kg ha-1 ) with FA of WSPF at 10 kg ha-1 along with irrigation at 80% CPE. While, higher net gain of potassium (+ 99.94 kg ha-1) was with FA of WSPF at 20 kg ha-1 along with irrigation at 100% CPE

Key words: Maize, Drip irrigation, Primary macro nutrients, Nutrient budgeting.