Abstract

RODRIGUES, Marcello Hungria et al. Agronomic performance of palisade grass under different doses of liquid blood waste and chemical composition of soil. Rev. mex. de cienc. pecuarias [online]. 2024, vol.15, n.1, pp.49-68.  Epub Apr 12, 2024. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v15i1.6531.

The aim of the present study was to assess the agronomic performance and chemical composition of soil cultivated with palisade grass (Urochloa brizantha cv. Marandu) subjected to growing doses of liquid blood waste. The experiment followed the completely randomized blocks design with six treatments and four repetitions. The following doses of processed liquid blood waste were applied to test palisade grass’ yield: 0, 150, 300, 450 and 600 m3 ha-1. In addition, it was used in conjunction with chemical fertilization at a rate of 50 kg ha-1 of P2O5 and 100 kg ha-1 of N (this treatment was not managed with liquid blood residue). Palisade grass forage yield was influenced by the fertilization strategy (P<0.001) - the highest values observed for this variable were recorded under blood waste doses of 450 m3 ha-1 and 600 m3 ha-1. The 0.0 - 0.20 m soil layer affect the organic matter fraction. On the other hand, phosphorus (P) content presented differences between fertilization strategies; thus, it was possible observing that the waste dose of 450 m3 ha-1 accounted for the highest availability of nutrients. The application of blood liquid waste as alternative source of organic fertilizers can be feasible, because it promotes significant increase in forage mass.

Keywords : Cerrado; Organic fertilization; Forage Mass; Sustainability; Urochloa brizantha.