ABSTRACT Plant production in nurseries, both in the forestry and horticultural sectors, has a large demand for substrates, making the use of natural resources such as peat high. The composition of substrates must not only have the necessary characteristics for good plant development, such as porosity, density, and water retention, but also look for sustainable and economical production. Biochar is a material derived from the processing of various organic residues which, due to its physical and chemical characteristics, presents great […]

Organic residue application into soil alter the emission of gases to atmosphere and CO2, CH4, N2O may contribute to increase the greenhouse effect. This experiment was carried out in a restoration area on a dystrophic Ultisol (PVAd) to quantify greenhouse gas (GHG) emissions from soil under castor bean cultivation, treated with sewage sludge (SS) or mineral fertilizer. The following treatments were tested: control without N; FertMin = mineral fertilizer; SS5 = 5 t ha-1 SS (37.5 kg ha-1 N); SS10 […]