Chickpea is a legume crop grown on the marginal lands thus insufficient nano-micronutrients availability is severe problem for this crop. In this study, using of some nano-micronutrient (zinc, iron and manganese) and three sulfur levels (0, 15 and 30 Kg ha-1) have been investigated. In this study, we used treatment × trait biplot analysis to examine the in formativeness of the treatments and traits. Results indicated that the first two principal components accounted 70% and 13% respectively of total variation. The vertex treatments in polygon biplot were S1-N1, S1-N2, S1-N3, S2-N1 and S3-N1 which S3-N1 treatment indicated high performance most measured traits. According to vector-view biplot, seed yield was positively associated with number of seeds per plant while it showed weak positive association with most of the other measured traits except number of empty pod per plant. Most traits like thousand seed weight indicated negative correlation with number of empty pod per plant. Harvest index showed near zero association with vegetative growth period and number of empty pod per plant. The best fertilizer for obtaining of high seed yield of chickpea was S3-N1 (30 kg ha-1 sulfur plus nano-micronutrient zinc. This investigation showed that the polygon and vector tools biplot are best to visualize the interaction structure among treatments and traits.
