Effects of Filter Cake, Bagasse and Chemical Fertilizers Application on Some Quantitative and Qualitative Characteristics of Sugarcane

The effect of obtained bagasse and filter cake from sugarcane industry with some chemical fertilizers at the same time as soil preparation and two stages of irrigation, on some characteristics of sugarcane was investigated as a factorial experiment in a randomized complete block design in 2021 in a field of 19 hectares located in Debel Khazei agro-industry company in Khuzestan province, Iran. The factors were consisted of organic amendments (no organic amendments, bagasse, filter cake, and bagasse+filter cake), urea fertilizer (with and without urea application), and triple superphosphate fertilizer (75% and 100% of the recommended amount).The factors were consisted of organic amendments (no organic amendments, 50 tons per hectare of bagasse, 50 tons per hectare of filter cake, and 50 tons per hectare of equal amounts of both bagasse and filter cake), urea fertilizer (with 150 kg per hectare and without urea application), and triple superphosphate fertilizer (75% (187.5 kg/ha) and 100% of the recommended amount (250 kg/ha).The results showed that the combined effect of organic amendment and urea fertilizer was significant on the number of buds, number of tillers, and stem weight. The maximum value of each trait was measured by the application of filter cake and urea fertilizer by 671292 buds per hectare, 757542 tillers per hectare, and 857.55 g of individual stem weight, which were 60, 78.4 and 41.35% higher than the non-application of organic amendment and urea fertilizer, respectively. The application of urea with bagasse resulted in a 7.35% increase in the number of stems compared to the control. The application of filter cake, the combination of bagasse + filter cake and bagasse with urea increased the yield by 54, 31.2 and 13.3 percent, respectively, compared to the control. The obtained yield was equal to 135.1, 120.1 and 99.4 tons per hectare, respectively. The application of filter cake with urea led to a 21.8% increase in juice percentage compared to the non-use of organic amendment and the normal level of fertilizer application (450 kg/ha during the growing season). Using 100% of the recommended dosage of phosphate fertilizer in the presence of urea increased juice percentage by 7.9% compared to the non-use of urea and the same amount of phosphate. Based on the effect of filter cake and bagasse and their application method on sugarcane's growth and yield characteristics, their use is recommended using the present research method.