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Registros recuperados: 13 | |
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LANDERS, J. N.; FREITAS, P. L. de; RALISCH, R.; SILVA NETO, S. P. da; CARVALHO, M. O. de. |
After nearly five decades, zero tillage (no-till), the bedrock of CA, is dejá vu in Brazil. But CA is not just leaving the soil protected with residues or cover crops and planting/drilling crops through them, quality CA also requires a pluri-annual rotation, frequently absent. It is also evolving by incorporating new compatible and sustainable technologies. Farmers, including organic ones, are learning how to incorporate innovative biological and mechanical methods for disease, pest and weed controls, reducing pesticide and fertilizer use; the Farmer Responsibility Index underlines significant recent reductions in chemical hazards. As consumers demand greater food traceability, certification and benchmarking will continue to expand, while... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Organic agriculture.; Agricultural sustainability; Farmer responsibility index; Innovative technologies; Land use intensification; Agricultura; Environmental impact.. |
Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137867 |
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FREITAS, M. do S. C. de; ARAÚJO, C. A. de S.; SILVA, D. J.. |
Este trabalho teve como objetivo estudar a decomposição e liberação de nutrientes em dois estercos incorporados a diferentes profundidades ao longo do tempo. Os tratamentos resultantes da combinação dos dois estercos (caprino e bovino), com quatro profundidades (0 ? 10; 10 ? 20; 20 ? 30 e 30 ? 40 cm) e com cinco tempos (30, 60, 90, 120 e 210 dias), foram dispostos em blocos casualizados, com três repetições. Verificou-se que a decomposição aumenta com a profundidade e o tempo de incorporação. A liberação de N não variou entre as profundidades de incorporação. A quantidade de N liberada no esterco bovino aumentou ao longo do tempo, já no esterco caprino observou-se uma maior liberação nos trinta dias inicias, seguida de imobilização até os 90 dias. A... |
Tipo: Artigo de periódico |
Palavras-chave: Ciclagem de nutrientes; Manejo orgânico do solo; Organic agriculture.; Solo; Agricultura Orgânica.; Soil.. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/928448 |
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RIBEIRO, E. C.; CARVALHO, D. F. de; SANTOS, L. A. de F.; GUERRA, J. G. M.. |
The present study was carried out in order to evaluate the effects of irrigation depths applied through drip and presence/absence of soil cover in onion yield, under agroecological farming. The experiment was conducted in Seropédica, RJ, Brazil, from May to September 2012. The experimental design was a randomized complete block with split-plot design with 10 treatments and 7 replications, characterized by the presence (+S) and absence (-S) of soil cover and five irrigation depths according to percentages of the crop evapotranspiration (ETc): 0, 22, 45, 75 and 100% (0, 155, 220.6, 320.5 and 372,7mm in +S condition and 0, 145.5, 207.6, 285, 351,4mm in -S condition). The irrigation influenced by second-order polynomial regression the total yield of bulbs,... |
Tipo: Separatas |
Palavras-chave: Allium cepa L; Organic agriculture.; Water use efficiency.. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1044449 |
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Ribeiro,Eduardo Castro; Carvalho,Daniel Fonseca de; Santos,Lucas Antonio de Freitas; Guerra,José Guilherme Marinho. |
ABSTRACT: The present study was carried out in order to evaluate the effects of irrigation depths applied through drip and presence/absence of soil cover in onion yield, under agroecological farming. The experiment was conducted in Seropédica, RJ, Brazil, from May to September 2012. The experimental design was a randomized complete block with split-plot design with 10 treatments and 7 replications, characterized by the presence (+S) and absence (-S) of soil cover and five irrigation depths according to percentages of the crop evapotranspiration (ETc): 0, 22, 45, 75 and 100% (0, 155, 220.6, 320.5 and 372,7mm in +S condition and 0, 145.5, 207.6, 285, 351,4mm in -S condition). The irrigation influenced by second-order polynomial regression the total yield of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water use efficiency; Allium cepa L.; Organic agriculture.. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500783 |
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Registros recuperados: 13 | |
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