Response of several genotypes of bread wheat Triticum aestivum L. to levels of silica fertilizer

A field experiment was carried out at the Agricultural Research and Experiment Station in the Sayada area of ​​the College of Agriculture – at the University of Kirkuk for the winter season 2021/2022 by randomizing complete block design with a split-plot system with 30 experimental units per block to stndy the effect of spraying three levels of silica fertilizer (0, 2, and 4) ml.l-1 and ten wheat genotypes which are (Wafia, Al-Fayadh, Abu Ghraib 3, Baghdad, Jihan 99, Adana, Sham 6, Bora, Al-Rashid, and Monnellsa). The results showed that there were significant differences between the levels of silica fertilizer in all the studied traits, where (4 ml.l-1) of silica with Sham6 was superior in the traits of the biological yield (19.79 ton.ha-1), the interaction was significant for all the studied traits, where the genotype was superior in relation to the interaction levels of spraying with silica fertilizer of (0 ml.l-1) silica with the genotype (Baghdad1) was superior in the number of effective tillers (514.67 m-2) The number of spikes (454.10 spikes.m-2) and the protein percentage (16.35) also exceeded the concentration of (4 ml.l-1) silica with the genotype (Baghdad1) in the weight of 1000 grains (48.86).