WASTE FROM THE CANEY INDUSTRY AS ALTERNATIVE SUBSTRATES FOR THE PRODUCTION OF PRE-BROCHED SUGAR CANE

Abstract

The residues generated in the sugarcane industry such as filter cake, bagasse and boiler ash can be used as alternative substrates in the production of sugarcane Pre-sprouted Seedlings (MPB). The objective of this work was to evaluate the efficiency of alternative substrates for the production of pre-sprouted sugarcane seedlings, from residues generated by the sugarcane industry. The design used was a completely randomized design with 8 treatments and 5 replications, totaling 40 experimental plots, each plot was represented by 1 tube. The treatments consisted of sugarcane residues, using the following proportions: T1 = control 100% commercial substrate (Tropstrato); T2 = 50% boiler ash + 50% filter cake; T3 = 50% filter cake + 50% bagasse; T4 = 50% boiler ash + 50% bagasse; T5 = 100% filter cake; T6 = 100% bagasse; T7 = 100% boiler ash; T8 = 33.33% bagasse + 33.33% boiler ash + 33.33% filter cake. The variables evaluated were: Stem diameter (DIAM); fresh shoot mass (MFPA); fresh root mass (MFR); shoot dry mass (MSPA); root dry mass (MSR). The T6 treatment presented inferior results to the other treatments as average reduction of 1,03g of MSPA. The T8 treatment proved to be a great option for the production of pre-sprouted seedlings, as it was observed in the statistical analysis superior results for the variables: DAM, MFPA, MSPA and MSR, besides being composed by the main residues of the sugarcane industry, Easy access and low cost.

Key-words: Saccharum officinarum. filter cake. boiler ash. bagasse.