A field study was conducted during rabi 2014-15 at University of Agricultural Sciences, Raichur, Karnataka, India to study nitrogen management in sweet corn (Zea mays saccharata L.) using simple hand held decision tools. Treatment consisted of recommended nitrogen @ 150 kg ha-1 in two and three splits, Leaf colour chart (LCC) threshold 4 and 5, Soil Plant Analysis Development (SPAD) meter/chlorophyll meter threshold 40 and 50 and GreenSeeker based NDVI 0.6 and 0.8 compared with basal 75 kg N followed by urea foliar spray @ 2 % at 30, 45 and 60 DAS and absolute control. Intermittent N application was done based on LCC, SPAD and NDVI threshold values. Randomized complete block design was followed with three replications. The fresh cob yield with husk was significantly higher by application of 150 kg N ha-1 in three splits (15.6 t ha-1) and LCC threshold 5 (15.2 t ha-1). It also recorded higher fresh cob yield without husk, green fodder and stover yield. Significantly higher N uptake by leaf, stem and cobs was recorded with application of 150 kg N ha-1 in three splits (161.6 kg N ha-1) followed by LCC threshold 5 (164.2 kg N ha-1) and NDVI-0.8 (154.2 kg N ha-1). Application of nitrogen at 150 kg ha-1 in three splits or based on LCC-5 has resulted in higher gross return, net return and B: C ratio. Based on the economic analysis, it can be inferred that LCC threshold 5 and NDVI 0.8 were found to be better tool for sweet corn nitrogen recommendation.