A field experiment was conducted to investigate the effect of sulphur levels on grain yield of clusterbean on the yield attributes of clusterbean in Hanumangarh District of Rajasthan. Result showed that the assessed technology of T3- Soil application of sulphur @ 40 kg per hectare recorded highest average grain yield ( qtl/ha) and highest average net returns (Rs. 27,013 per ha) as compared to T2- Soil application of sulphur @ 20 kg per hectare and farmers practice. But T2- Soil application of sulphur @ 20 kg per hectare recorded highest average B: C ratio () as compared to T3- Soil application of sulphur @ 40 kg per hectare and farmers practice. The trials also built the relationship and confidence between farmers and scientist of Krishi Vigyan Kendra. Therefore, it is suggested that these factors may be taken care to increase the scientific temperament of the farmers. | Effect of sulphur levels on grain yield of Clusterbean Cyamopsis tetragonoloba L. Taub. under rainfed condition in Hanumangarh dstrict of Rajasthan India