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All publications of “Laércio Ricardo Sartor”

4 results

Emissions of Nitrous Oxide and Methane in a Subtropical Ferralsol Subjected to Nitrogen Fertilization and Sheep Grazing in Integrated Crop-Livestock System

Jonatas Thiago Piva ORCID logo , Laércio Ricardo Sartor, Itacir Eloi Sandini, Anibal de Moraes, Jeferson Dieckow, Cimélio Bayer, [...]


ABSTRACT Brazilian agriculture contributes significantly to nitrous oxide (N2O) and methane (CH4) emissions, so the understanding of such emissions at the field is crucial for mitigation strategies. This study quantified the impact of N application and sheep grazing on the N2O and CH4 emissions from a subtropical Ferralsol under an integrated crop-livestock (ICL) management system. In a long-term experiment in southern Brazil, gaseous fluxes were measured during a year-long cycle of ryegrass (Lolium multiflorum) plus oats (Avena sativa) winter pasture […]

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Year-round poultry litter decomposition and N, P, K and Ca release

Christiano Santos Rocha Pitta, Paulo Fernando Adami, Adelino Pelissari, Tangriani Simioni Assmann, Marcia Fernanda Franchin, Luís César Cassol, [...]


Poultry litter is an important nutrient source in agriculture, although little information is available regarding its decomposition rate and nutrient release. To evaluate these processes, poultry litter (PL) was applied to the soil to supply 100, 200 and 300 kg ha-1 N contained in 4,953, 9,907 and 14,860 kg ha-1 PL, respectively. The litter bag technique was used to monitor the process of decomposition and nutrient release from the litter. These bags were left on the soil surface and collected periodically (after 15, 30, 60, […]

Effect of swine residue rates on corn, common bean, soybean and wheat yield

Laércio Ricardo Sartor, Alceu Luiz Assmann, Tangriani Simioni Assmann, Paulo Egidio Bigolin, Mário Miyazawa, Paulo Cesar de Faccio Carvalho


Swine residue (SR) applied as nutrient source of crops such as corn, bean, soybean and wheat, besides representing an environmental-friendly way of disposing of organic waste resulting from swine production, may significantly increase grain yields, replacing mineral fertilizer. The objective was to evaluate the effect of SR rates on corn, common bean, soybean and wheat yields from 2002 to 2007, in comparison with mineral fertilizer. The experiment was carried out at the Instituto Agronômico do Paraná – IAPAR, Pato Branco, […]

Nitrogen fertilizer use efficiency, recovery and leaching of an alexandergrass pasture

Laércio Ricardo Sartor, Tangriani Simioni Assmann, André Brugnara Soares, Paulo Fernando Adami, Alceu Luiz Assmann, Christiano Santos Rocha Pitta


Nitrogen usually determines the productive potential of forage crops, although it is highly unstable in the environment. Studies on recovery rates and use efficiency are important for more reliable fertilizer recommendations to reduce costs and avoid environmental pollution. The purpose of this study was to evaluate N use efficiency and recovery rate of Alexandergrass pasture (Brachiaria – Syn. Urochloa plantaginea) as well as N-NO3– and N-NH4+ soil concentrations using different levels of N fertilization under two grazing intensities. The experiment […]