<b>The influence of organic fertilization on the chemical properties of a dystrophic Red Latosol and on the production of <em>Brachiaria brizantha</em> cv. Marandu dry matter</b> - DOI: 10.4025/actasciagron.v29i5.754

Abstract

Aiming at discovering the influence of organic fertilization upon the chemical properties of a dystrophic Red Latosol cultivated with Brachiaria brizantha cv. Marandu, as well as, on the production of dry matter, an experiment was set in Cidade Gaucha, a small town located in the Northwest of Parana state. Doses of poultry manure or waste 0, 5, 10, 15 and 20 t ha^-1 and 100 kg ha^-1 of nitrogen, in the form of urea, were tested. The production of dry matter presented a linear growing. Such a growing was due to the increase in the poultry manure control treatment applied onto the pasture. The 20 t ha^-1 maximum dose tested was 321% superior to the testing dose without any fertilization and 96.6% superior to the chemical fertilization. There were significant differences regarding the variables such as, Potassium, Phosphorus and Carbon content, whereas, for pH, H+Al, Ca, Mg and CTC there were no significance. However, there was a significant difference concerning pH in relation to testing without any fertilization.