Drought is the most limiting factor for production in semi-arid ecosystem of Gujarat. Under changed climate scenario due to variability in rain fall pattern problem of drought aggravated. In order to investigate the effect of foliar spray of different chemicals and PGRs o no durum wheat under conserved moisture condition at Agricultural Research Station, AAU, Dhandhuka, Bhal tract of Gujarat in rabi season cultivation 2014-15 to 2016-17. The experiment was carried out in randomized block with eight treatments in three replications viz; T0 = Control, T1 = Water spray, T2 = Salicylic acid (100 ppm), T3 = Thioglicolic acid (100 ppm), T4 = Murate of potash (0.5%), T5 = Calcium nitrate (0.2%), T6 = Brassinolide (5 ppm), T7 = NAA (40 ppm), T8 = Thiourea (500 ppm) with absolute control (T0 = Control) and spray wad made at two stages of crop first on tillering stage and ear emergence and two sampling was done and each sampling were collect for biochemical analysis 10 days after each spray (tillering stage & ear emergence) of chemicals & PGRs to crop. Among the treatments imposed, result revealed that total chlorophyll content mg/fresh weight, Relative water content (RWC), antioxidant activates gm/100 mg, proline content mg/100 gm, glycine betaene mg/100 gm and protein content gm/100 mg was found significantly higher with T8 treatment (Thiourea 500 ppm) over the control and treatment no 6 (Brassinolide (5 ppm) was fond at par with T8 treatment in first sampling. whereas in second sampling significantly higher data of total chlorophyll content mg/fresh weight (3.358), moisture % (72.156) RWC % (81.71) AOA gm/100 mg (2.271), proline content mg/100 gm (32.96), glycine betaene mg/100 gm (232.86) and protein content gm/100 mg (6.937) was found with T8 (Thiourea 500 ppm) treatment over control.

In order to investigate the effect of seed soaking and foliar spray of stress-mitigation bio-regulators on growth and growth indices of durum wheat under conserved moisture condition of Bhal tract of Gujarat in rabi season cultivation 2017-18 & 2108-19. The experiment was done in randomized block design (factorial) with four replications, two factors & four levels, (A) Seed soaking (S0: No seed soaking, S1: Seed soaking with water, S2: Seed soaking with salicylic acid (100 ppm) & S3: Seed soaking with thiourea (500 ppm)), (B) Foliar spray (C0: No spray, C1: Water spray, C2: Salicylic acid spray (100 ppm) & C3: Thiourea spray (1000 ppm)). The foliar spray of stress-mitigation bio-regulators was done on tillering and ear emergence stages of crop. The impact of seed soaking & foliar spray with salicylic acid (100 ppm) was found significant over control in respect to plant height at 60 and 90 DAS and at harvest, dry matter accumulation at 60 and 90 DAS and at harvest, Crop growth rate (CGR) at 30-60 DAS, 60-90 DAS and 90 DAS to harvest, Relative growth rate (RGR) at 30-60 DAS, 60-90 DAS and 90 DAS to harvest, Leaf area index (LAI) at 90 DAS, Leaf area ratio (LAR) at 30-60 DAS and 60-90 DAS and in case of net assimilation rate (NAR) the significant data was found seed soaking with salicylic acid (100 ppm) at 30-60 DAS and 60-90 DAS. The study clearly indicated that seed soaking & foliar spray with salicylic acid (100 ppm) was performed better than over control.