02572naa a2200241 a 450000100080000000500110000800800410001902400520006010000180011224501190013026000090024952018300025865000270208865000160211570000170213170000230214870000140217170000280218570000220221370000230223570000160225877300560227421360672021-11-12       2021    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/s11053-020-09745-w2DOI1 aRODRIGUES, M.  aMining Co-products as Sources of Multi-nutrients for Cultivation of Brachiaria ruziziensis.h[electronic resource]  c2021  aThe aim of this study was to evaluate the use of mining co-products from the Irati (rhythmite and bituminous shale) and Corumbataí Formations (clayey siltstone) as sources of multi-nutrients for the cultivation of Brachiaria ruziziensis. The treatments were arranged within the double factorial scheme (7 × 2), completely randomized with 10 replications and placed into pots inside a greenhouse. Two factors were evaluated: the type of co-product and the soil class (Arenosol and Ferralsol). The mining co-products were applied in their isolated form and in composite (blended) form. At 60 and 140 days after the application of treatments, the ions available in the soil were determined. After that, four Brachiaria ruziziensis plants were cultivated per pot. After 40 days of cultivation, the aerial part of the plants was cut. Afterward, the macronutrients, as well as the production of shoot dry mass of the plants, were determined. The application of co-products, in general, increased the pH and the contents of ions available: K+ (Mehlich-1), Mg2+, Ca2+, P, SO42− and Si. As a highlight, at 140 days, rhythmite was the most efficient co-product in increasing pH, Ca2+ and Mg2+, with increases of 23%, 241% and 722% in Arenosol, respectively. Also at 140 days, bituminous shale increased the contents of SO42− by 72% and 427% in Ferralsol and Arenosol, respectively. Moreover, the accumulation of K, Ca, Mg and S, as well as the production of shoot dry mass of Brachiaria improved with the application of the co-products. In conclusion, the application of mining co-products alters the chemical attributes of both the soil and the plant, and this favors the production of shoot dry mass of Brachiaria, which demonstrates the potential to be a clean environmental solution to soil fertilization.  aBrachiaria Ruziziensis  aMineração1 aNANNI, M. R.1 aSILVEIRA, C. A. P.1 aCEZAR, E.1 aSANTOS, G. L. A. A. DOS1 aFURLANETTO, R. H.1 aOLIVEIRA, K. M. DE1 aREIS, A. S.  tNatural Resources Researchgv. 30, n. 1, Feb. 2021.