THE EFFECT OF PLANT RESIDUES, IRRIGATION WATER QUALITY AND POTASSIUM LEVELS ON TRITICUM AESTIVUM GROWTH

The experiment has been applied in the College of Agriculture- Wasit University, for the season 2021/2022. Ibaa 99 wheat cultivar has been planted using the complete randomized design (CRD). The study aims were to evaluate the different levels of salinity irrigation water alternating with fresh water and, its effect on the growth and production of wheat Triticum aestivum. The results have been showed that the unburned soil has been recorded the highest values in some of the studied traits including plant height, grain yield, spike length, biological yield, number of branches, number of spikes, and K, P, N content. Also, there was a response to potassium fertilization. The best level was the second level K2250 kg. This concentration has been recorded the highest values for the studied traits including plant height, grain yield, spike length, biological yield, number of branches, number of spikes. The effect of salinity irrigation water was clear in all the studied traits. The first level 1.2 dS m-1 has been recorded the highest values for all the studied traits. On the other hand, the second level 4 dS m-1 was the lowest values.