## 3 Results and Discussion
The applied third dose of granulates significantly increased the content of the tested metals in the test plant. Fertilizer granulates applied I (30% industrial sludge), II (40% industrial sludge), III (20% industrial sludge) and IV (50% industrial sludge) increased the contents of copper, chromium, cadmium, zinc, nickel and lead in triticale grain compared to the control by 14.6%, 22.1%, 27.6%, 29.9%, 38.46% and 116.2%, respectively. The highest increase in the content of copper and chromium was obtained between the 1 st and 3 rd doses of granulate I, by 14.3% and 26.8%, respectively. The applied granulate II contributed to the increase between the 1 st and 3 rd doses of nickel by 28.9%, zinc by 7.17%, and between the 1 st and 2 nd doses of cadmium by 15.6%. On the other hand, granulate IV had the most important impact on the extension in lead content by 15.5% in the seed of the test plant between the 1 st and 3 rd doses. Analysing the effect of the applied granulates on the concentration of the tested heavy metals in triticale grain, it was found that the second dose of granulate II caused an increase in the content of copper, nickel, and lead by 9.86%, 13.2% and 4.76%, respectively, compared to the first dose hey. On the other hand, granulate I had a significant effect between the 1 st and 2 nd doses applied to increase the chromium content by 21.2%, and granulate III caused an increase in the zinc content by 5.21%. Crops contain 7.5 mg of Cd, 17.5 mg of Cu, 17.5 mg of Cr, 55 mg of Ni, 165 mg of Pb and 250 mg of Zn in one kilogram of dry matter. Comparing your own results, we found that cadmium, copper, nickel, lead, and zinc content in rape seeds and triticale grain in all fertilisation objects was lower than average [31]. On the other hand, the content of chromium in the seeds of the test plant obtained under the influence of the applied fertilization was higher than average, but it was in the range of 5-30 mg\(\cdot\)kg\({}^{-1}\) DM [31]. A similar relationship was found in the case of triticale grain. Based on the literature data, the level of heavy metal content in the tested plants can be considered satisfactory. The contents of cadmium, nickel, and zinc in rape seeds were lower, and copper, chromium, and lead were higher compared to the results obtained by [PERSON] and [PERSON] [32], who tested fertilizer granulates with municipal sewage sediment and other waste. Analysing the content of heavy metals under the influence of the applied granulates in triticale grain, it was found that there was less cadmium and zinc, more chromium and lead, and copper and nickel in similar amounts concerning the content given in the literature [32]. It has also been proven that fertilisation of minerals with phosphorus, depending on the source of phosphorites and apatites used for their production, may contain heavy metals and thus contribute to an increase in cadmium content in the soil and, thus, in crop plants [12; 33; 34]. The lowest amount of heavy metals was taken up by spring rape seeds as a result of the application of III fertilizer granulate (20% share of industrial sludge and 40% share of ash). The uptake of heavy metals by the seeds of the test plant on this object was significantly lower compared to the other fertilisation objects of the experiment. Increasing doses of fertilizer granulates significantly increased the uptake of cadmium, copper, chromium, nickel, lead, and zinc by the seeds of the test plant (Table 7). The second dose of granulate I (30% industrial sludge) did not cause a significant change in nickel uptake by spring rape seeds analysed in relation to the first. The third dose of granulate III (20% industrial sludge) did not cause a significant increase in the intake of copper, chromium, cadmium, nickel and lead, and the dose of granulate IV (50% industrial sludge) significantly reduced the intake of heavy metals compared to the second dose.