|
|
|
| Registros recuperados: 12 | |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| WUADEN, C. R.; NICOLOSO, R. da S.; GRAVE, R. A.; PIGOSSO, A.. |
| ABSTRACT: We assessed the nitrogen use efficiency of maize amended with mineral and organic N sources in a Nitisol from Southern Brazil under contrasting soil tillage systems: conventional tillage (CT) and no-tillage (NT). The tested N sources were: 140 kg N ha-1 (total N input) either as mineral fertilizer (urea; MIN), pig slurry (PS), anaerobically digested pig slurry (ADS) and composted pig slurry (CS), besides a control without fertilization (CTR). The N-based application of PS and ADS supplied less than 74% of the maize requirements for P2O5 (115 kg ha-1 ), while CS exceeded P2O5 demand by up to 109%. PS and ADS promoted maize N uptake, biomass production and grain yield similar or higher than maize receiving mineral fertilizer (urea). However, CS... |
| Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Biodigestão; Plantio; Compostagem; Dejeto; Suíno. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078338 |
| |
|
|
| GRAVE, R. A.; NICOLOSO, R. da S.; CASSOL, P. C.; AITA, C.; CORREA, J. C.; DALLA COSTA, M.; FRITZ, D. D.. |
| Agriculture can be either a source or sink of atmospheric CO2 depending on soil management. The application of swine slurry in conventional tilled soils could enhance soil CO2 emission depleting soil organic C stocks. However, the use of recalcitrant C-rich organic fertilizers in no-till soils can offset soil CO2 emission promoting soil C sequestration. This hypothesis was tested by evaluating short-term CO2-C emissions from a Rhodic Nitisol under contrasting soil disturbance levels (disturbed (DS) and undisturbed soil (US)) top-dressed with mineral or organic fertilizers (urea (UR), raw swine slurry (RS),anaerobically digested swine slurry (ADS), and composted swine slurry (CS)). Soil CO2 emission was evaluated for 64 days using static chambers where gas... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Emissão de gases; Plantio direto; Compostagem; Dejeto; Urina; Suíno; Biogás; No-tillage; Pig manure; Greenhouse gas emissions. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001817 |
| |
|
|
| WUADEN, C. R.; NICOLOSO, R. da S.; GRAVE, R. A.; PIGOSSO, A.. |
| ABSTRACT: We assessed the impact of organic N sources on total organic carbon (TOC), particulate organic carbon (POC), and mineral-associated organic carbon (MAOC) pools in a Nitisol from Southern Brazil under contrasting soil tillage systems. The tillage systems were conventional tillage (CT) and no-tillage (NT). The tested N sources were: 140 kg N ha-1 (total N input) either as mineral fertilizer (urea; MIN), pig slurry (PS), anaerobically digested pig slurry (ADS) and composted pig slurry (CS), besides a control without fertilization (CTR). TOC stocks decreased by 1.0 and 5.1 Mg C ha-1 after two years of CT in both 0-5 and 0-30 cm soil layers, respectively. NT increased TOC stocks by 2.3 Mg C ha-1 at the soil surface and decrease by 1.7 Mg C ha-1 at the... |
| Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Carbono orgânico; Nitrogênio orgânico; Manejo do solo; Plantio. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078342 |
| |
|
| |
| Registros recuperados: 12 | |
|
|
|
