A field experiment was conducted at the Main Agricultural Research Station, UAS, Dharwad (Karnataka) under rainfed situations during Kharif 2012 to study the performance of Maize Hybrids to graded levels of fertilizer under different climatic situations. In the recent days there have been wide variations in the climatic situations, especially withdrawal and onset of rainfall, increasing in global temperature which has impact on yielding ability of the existing maize hybrids. To overcome such changing climatic situations, the selection of suitable high yielding maize hybrids plays an important role in increasing production efficiency coupled with nutrient levels. The results revealed that among the hybrids, significantly higher grain yield was recorded with 900 M Gold (64.6 q ha-1), gross returns (` 95446 ), net returns (` 65795 ) and B C ratio (3.22) as compared to other hybrids and it was on par with NK-6240 (62.0 q ha-1) and were followed by CP-818 (59.3 q ha-1), PAC-740 (57.8 q ha-1) and 30B07 (54.7 q ha-1). The hybrid Arjun (38.2 q ha-1) and Hema (39.2 q ha-1) were recorded significantly lower grain yield and economic returns. The yield components like grains cob-1 (652.7), grain weight plant-1 (166.7 g), Test weight (100 grains weight) (37.9 g), Cob length (19.8 cm) and Rows cob-1 (15.4) also recorded significantly higher grain yield over other hybrids but at par with NK-6240. With respect to nutrient levels, the application of 150 per cent RDF (150: 75: 37.5 NPK kg ha-1) recorded significantly higher grains cob-1 (599.8), 100 grain weight (35.02 g), grain weight plant-1 (141.9 g), grain yield (52.7 q ha-1), net returns (¹ . 47479 ha-1)  and B C ratio (2.56) as compared to 100 per cent RDF (100:50:25 NPK kg ha-1)