This field experiment was conducted at Agronomy Research Farm, The University of Agriculture Peshawar during rabi season 2013-2014 to study the response of triticale to phosphorus (P), sulphur (S) and different irrigation (I) levels. The experiment was comparised on randomized complete block (RCB) design with split plot arrangement having three replications. A sub plot size of 5.4 m 2 having six rows of 3 m in length was used. Irrigation numbers (I1 (seedling), I2 (seedling + tillering), I3

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... dling + tillering + booting)) were applied to the main plot while phosphorus (60, 90 and 120 kg ha -1 ) and sulphur (10, 20 and 30 kg ha -1 ) were applied in combination at sub plot while one control having no P and S application. All of the phosphorus and sulphur were applied at sowing time. The result of this study revealed that more days to anthesis (125) were produced by irrigation applied two times (I2 = seedling + tillering), more days to physiological maturity (167), and harvest index (32 %) were recorded by irrigation applied one time (I1 = seedling) while higher plant height (114 cm) and leaf area (21 cm 2 ) were recorded by irrigation applied three times (I3 = seedling + tillering + booting). Plots that are treated with phosphorus @ 90 kg ha -1 produced more days to anthesis (126), plant height (114 cm) and leaf area cm 2 (21) while more days to physiological maturity (167) was formed by 60 kg P ha -1 . Sulphur applied to the plots @ 20 kg ha -1 produced higher days to anthesis (126) . It can be concluded from this study that better physiological traits were produced from irrigation applied two times (I2 = seedling + tillering) in grouping with 90 kg P ha -1 and 20 kg S ha -1 .