EFFECT OF SOIL CONDITIONERS APPLIED TO SEED ON GRAIN YIELD AND YIELD CHARACTERISTICS IN WHEAT

This study, researching the effect of seed treatment with liquid soil conditioners on yield properties of bread wheat varieties, was carried out during 2017 and 2018 years in the experimental field of Tekirdag Namik Kemal University Faculty of Agriculture, Department of Field Crops. The experiments were conducted with 3 bread wheat varieties and 4 soil amendments (control + 3 different liquid soil amendments) in 3 repetitions. In the experiment, 4 different treatments including 3 different soil regulators and 1 control (T1: Control; T2: 13-5- 8+glycine betaine; T3: 15% organic matter, 15% humic and fulvic acid+0.03% potassium and T4: 25% organic matter + 65% humic acid + 6% potassium (T4) were made. Seeds treated with a spray and then dried were sown as split plot experimental design. In the study, the variations in the plant height (PH), spike length (SL), number of spikelets per spike (NSS), number of grains per spike (NGS), grain weight per spike (GWS), spike fertility index (SFI), harvest index (HI) and grain yield (GY) parameters were investigated for the bread wheat varieties. According to the research results, all soil conditioners applied to seeds were determined to affect the investigated characters at a statistically significant level. For the PH parameter, T3 treatment caused a significant increase, while for the SFI parameter, T2 treatment caused a significant increase. For the HI parameter, treatments T2 and T3 had the highest effect. Spike characteristics like SL, NSS and NGS increased compared to controls with all soil conditioner treatments, while parameters like GWS and SFI differed according to variety. Grain yield, the most important parameter for wheat, provided the highest results in different soil conditioner treatments depending on the varieties. T4 treatment caused clear increases in the SL, NSS, NGS, GWS and GY parameters. According to the data obtained was evaluated, soil conditioner applications caused a significant increase in the parameters examined in wheat. T4, which contains 25% organic matter + 65% humic acid + 6% potassium, was determined as the most effective soil conditioner for many parameters.