Effect of Irrigation and Sulphur Levels on Growth, Yield Attribute and Yield of Clusterbean (Cyamopsis tetragonoloba (L.)

A field experiment was conducted during summer season of the year 2012–13 at Navsari (Gujarat). Irrigation levels resulted in significant variation in plant height at various growth stages, irrigation at 0.8 IW/CPE ratio accounted higher plant height over rest of the levels but remained at par with 0.6 IW/CPE. This was alsotrue for number of branches/plant. The differences were significant with regard to yield attributes viz., number of pods/plant, seeds/pod, stover yield/plant and test weight (100 seed weight). The highest seed yield (1461 kg/ha) and stover yield (3094 kg/ha) recorded under 0.8 IW/CPE as compared to rest of irrigation levels. Among the different levels of sulphur, the highest level S₂ (40 kg/ha) dominated and established its superiority in respect to almost all growthattributes and yield attributes such as plant height, number of branches per plant, number of pods per plant, seeds per pod, test weight (100 seed weight). Application of sulphur @ 40 kg/ha (S₂) produced significantly the higher seed (1417 kg/ha) and stover (2945 kg/ha) yields of cluster bean. On the basis of results obtained in present investigation, it can be concludedthat summer cluster bean (cv. GG-2) should be irrigated at 0.8 IW/CPE + 40 kg S/ha as gypsum under South Gujarat condition for getting higher yield and monetary return.