Revista Brasileira de Engenharia Agrícola e Ambiental
versão impressa ISSN 1415-4366versão On-line ISSN 1807-1929
FREITAS, Wallisson da S. et al. Effect of swine wastewater application on corn production for silage. Rev. bras. eng. agríc. ambient. [online]. 2004, vol.8, n.1, pp.120-125. ISSN 1415-4366. http://dx.doi.org/10.1590/S1415-43662004000100018.
This work was carried out with the objective of evaluating the effect of four depths of water and swine wastewater-gross and after sieving, on production of corn (Zea mays, L.) for silage. Water was applied in eight lysimeters, in other eight gross swine wastewater (ARB) was applied and the sieved pig wastewater (ARP) on the other eight. The depths applied corresponded to 0.5, 1.0, 1.5 and 2.0 times of the reference evapotranspiration. The production components, height of the plants, height of spikes, spike index, productivity of spikes and productivity of green matter were evaluated 140 days after sowing. The mean productivities of green matter in the treatments with ARB and ARP were equivalent to 45 and 46 t ha-1, corresponding to, respectively, 51 and 52% higher than the productivity in the water treatment. The application of swine wastewater increased the height of plants, spike index, height of spikes and weight of spikes. In general, the sieving of swine wastewater and the water depth did not affect the production components of the silage corn.
Palavras-chave : fertirrigation; swine wastewater; lysimeter; Zea mays, L..