Response of wheat (Triticum aestivum L.) to sulfur impurity supplied as triple-super phosphate under gypsum and urea fertilizer backgrounds

On-farm experiments (24) were conducted in two seasons to assess the influence of sulfur impurity triple-super phosphate (TSP) on wheat. The laid-out completely randomized block design triplicate. Nutrients investigated include: Nitrogen (N), (S) and phosphorus (P). TSP is tested contain about 2 6% as impurity. However, wheat did not show response from TSP. Though, it was statistically significant, however, there always yield increments by certain percent due S-TSP eight out 10 sites with increasing trends curves. Overall, effects such nutrients incidentally supplied concentrated fertilizers like should be overlooked, benefits could expressed quality attributes crops. Indeed, this vital varietal specific nutrient requirement studies. small-dose many-folds small-holders if integrated organic resources, thereby encouraging agriculture. But, showed gypsum (in 67%) N urea (100%) sites. As depicted, sharply-rising curves applied nitrogen elucidate that most limiting followed S. Always rising also strong positive synergies between nutrients.  Key words: Nitrogen, micro-dosing, precision-farming, impurity, (TSP), response.