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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
05/11/2018 |
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Data da última atualização: |
05/11/2018 |
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Tipo da produção científica: |
Orientação de Tese de Pós-Graduação |
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Autoria: |
WILDA, L. R. M. |
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Afiliação: |
Luana Rafaela Maciel Wilda. |
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Título: |
Plant sensors for nitrogen monitoring and fertilization impacts on the nutrient dynamic on maize crop. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
2018. |
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Páginas: |
93 f. |
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Idioma: |
Inglês |
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Notas: |
Tese (Doutorado) - Universidade Federal de Lavras, Lavras, 2018.
Coorientador: Álvaro Vilela de Resende. |
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Conteúdo: |
Nitrogen (N) is the micronutrient most demanded in agriculture, of which deficiency strongly limits crop production. This study was comprised of two experiments conducted under irrigation, in Red Latosol areas, of Embrapa Milho e Sorgo, in Sete Lagoas, MG, Brazil. The first experiment regarded the effectiveness of nitrogen monitoring sensors and the productive potential of the corn. The second experiment focused on the effects of doses of nitrogen for corn coverage over the dynamics of ammonium and nitrate in the soil, losses by nitrous oxide emission and by ammonium and nitrate leaching, nutrient use by the plant, productivity response and N balance in the crop in question. In experiment 1, spectral readings were performed with N sensors and plants were collected along the cycle of four corn hybrids, cultivated in medium and high fertilization levels. In addition to being influenced by the fertilization levels, the sensor reading values varied according to the corn hybrids, phenological stages and their interaction. The sensors showed low prediction capacity of the nutritional status of nitrogen of the corn in the studied environments. For a greater sensitivity for detecting differences in the growth and biomass accumulation intensities, the GreenSeeker is the most effective for predicting corn productive potential. In experiment 2, a corn hybrid was cultivated in area with drainage lysimeter, receiving treatments with 60, 150 and 396 kg ha-1 of N coverage. Static chambers were used for collecting nitrous oxide emissions after coverage fertilization. Along the cycle, soil samples were collected at 60 cm pf depth for quantifying ammonium and nitrate stocks, while leaching was determined in soil solution samples percolated in the lysimeters. Plant samples were collected in many phenological stages to evaluate N absorption and accumulation in the corn dry mass, and productivity at the end of the cycle. From the measures variables, the balance of N credits and losses were estimated for the crop. The doses of nitrogen coverage resulted in no significant differences in plant accumulation and grain productivity. The losses of N from the system were higher with the increase in the doses of the nutrient coverage, but the differences were disproportionate to the variation if quantity provided. In the estimate of N balance with the lower coverage dose, 40% of the nutrient credits in the system were exported in the harvested grains, 6% correspond to losses by volatilization and leaching, 49% remained as residual stock and 0.2% were non-detected N. Nitrogen surplus must be avoided during fertilization of environments with excessive potential of availability from previous crops, given that the system presents limited capacity for nutrient storage, predisposing losses that reduce the efficiency of fertilization and can lead to economic and environmental losses. MenosNitrogen (N) is the micronutrient most demanded in agriculture, of which deficiency strongly limits crop production. This study was comprised of two experiments conducted under irrigation, in Red Latosol areas, of Embrapa Milho e Sorgo, in Sete Lagoas, MG, Brazil. The first experiment regarded the effectiveness of nitrogen monitoring sensors and the productive potential of the corn. The second experiment focused on the effects of doses of nitrogen for corn coverage over the dynamics of ammonium and nitrate in the soil, losses by nitrous oxide emission and by ammonium and nitrate leaching, nutrient use by the plant, productivity response and N balance in the crop in question. In experiment 1, spectral readings were performed with N sensors and plants were collected along the cycle of four corn hybrids, cultivated in medium and high fertilization levels. In addition to being influenced by the fertilization levels, the sensor reading values varied according to the corn hybrids, phenological stages and their interaction. The sensors showed low prediction capacity of the nutritional status of nitrogen of the corn in the studied environments. For a greater sensitivity for detecting differences in the growth and biomass accumulation intensities, the GreenSeeker is the most effective for predicting corn productive potential. In experiment 2, a corn hybrid was cultivated in area with drainage lysimeter, receiving treatments with 60, 150 and 396 kg ha-1 of N coverage. Static chambers ... Mostrar Tudo |
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Palavras-Chave: |
Nutrição mineral; Óxido nitroso; Sensor de dossel. |
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Thesagro: |
Lixiviação; Nitrato; Nutrição Vegetal. |
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Thesaurus Nal: |
Plant nutrition. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185453/1/Alvaro-tese-Luana.pdf
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Marc: |
LEADER 03603nam a2200217 a 4500
001 2098774
005 2018-11-05
008 2018 bl uuuu m 00u1 u #d
100 1 $aWILDA, L. R. M.
245 $aPlant sensors for nitrogen monitoring and fertilization impacts on the nutrient dynamic on maize crop.$h[electronic resource]
260 $a2018.$c2018
300 $a93 f.
500 $aTese (Doutorado) - Universidade Federal de Lavras, Lavras, 2018. Coorientador: Álvaro Vilela de Resende.
520 $aNitrogen (N) is the micronutrient most demanded in agriculture, of which deficiency strongly limits crop production. This study was comprised of two experiments conducted under irrigation, in Red Latosol areas, of Embrapa Milho e Sorgo, in Sete Lagoas, MG, Brazil. The first experiment regarded the effectiveness of nitrogen monitoring sensors and the productive potential of the corn. The second experiment focused on the effects of doses of nitrogen for corn coverage over the dynamics of ammonium and nitrate in the soil, losses by nitrous oxide emission and by ammonium and nitrate leaching, nutrient use by the plant, productivity response and N balance in the crop in question. In experiment 1, spectral readings were performed with N sensors and plants were collected along the cycle of four corn hybrids, cultivated in medium and high fertilization levels. In addition to being influenced by the fertilization levels, the sensor reading values varied according to the corn hybrids, phenological stages and their interaction. The sensors showed low prediction capacity of the nutritional status of nitrogen of the corn in the studied environments. For a greater sensitivity for detecting differences in the growth and biomass accumulation intensities, the GreenSeeker is the most effective for predicting corn productive potential. In experiment 2, a corn hybrid was cultivated in area with drainage lysimeter, receiving treatments with 60, 150 and 396 kg ha-1 of N coverage. Static chambers were used for collecting nitrous oxide emissions after coverage fertilization. Along the cycle, soil samples were collected at 60 cm pf depth for quantifying ammonium and nitrate stocks, while leaching was determined in soil solution samples percolated in the lysimeters. Plant samples were collected in many phenological stages to evaluate N absorption and accumulation in the corn dry mass, and productivity at the end of the cycle. From the measures variables, the balance of N credits and losses were estimated for the crop. The doses of nitrogen coverage resulted in no significant differences in plant accumulation and grain productivity. The losses of N from the system were higher with the increase in the doses of the nutrient coverage, but the differences were disproportionate to the variation if quantity provided. In the estimate of N balance with the lower coverage dose, 40% of the nutrient credits in the system were exported in the harvested grains, 6% correspond to losses by volatilization and leaching, 49% remained as residual stock and 0.2% were non-detected N. Nitrogen surplus must be avoided during fertilization of environments with excessive potential of availability from previous crops, given that the system presents limited capacity for nutrient storage, predisposing losses that reduce the efficiency of fertilization and can lead to economic and environmental losses.
650 $aPlant nutrition
650 $aLixiviação
650 $aNitrato
650 $aNutrição Vegetal
653 $aNutrição mineral
653 $aÓxido nitroso
653 $aSensor de dossel
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca |
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Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
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| Registros recuperados : 17 | |
| 5. |  | RESENDE, A. V. de; BRANDAO, Z. N.; GREGO, C. R.; BORGHI, E.; WILDA, L. R. M. Manejo do solo sob o enfoque da agricultura de precisão. In: BERTOL, I.; DE MARIA, I. C.; SOUZA, L. da S. (Ed.). Manejo e conservação do solo e da água. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2019. p. 1219-1270.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Algodão; Embrapa Milho e Sorgo. |
|    |
| 8. | | LACERDA, J. J. de J.; RESENDE, A. V. de; HICKMAN, C.; WILDA, L. R. M.; FURTINI NETO, A. E. Otimização do uso de fertilizantes para o sistema de produção soja/milho em solo de fertilidade construída na região do Cerrado. Revista Plantio Direto, Passo Fundo, v. 25, n. 151, p. 9-20, jan./fev. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 10. | | BORGHI, E.; WILDA, L. R. M.; RESENDE, A. V. de; PEREIRA FILHO, I. A.; RODRIGUES, R. A. L. Índice de vegetação, teor de clorofila e eficiência de uso de nitrogênio por híbridos de milho. In: CONGRESSO NACIONAL DE MILHO E SORGO, 31., 2016, Bento Gonçalves. Milho e sorgo: inovações, mercados e segurança alimentar: anais. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2016.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
|  |
| 11. | | WILDA, L. R. M.; RESENDE, A. V. de; CUNHA, T. F.; LACERDA, J. J. de J.; LIMA, G. J. de O. Condições de acidez subsuperficial de solos cultivados para a produção de grãos no Cerrado do Brasil Central. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2012. 1 CD-ROM. Fertbio 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 12. | | WILDA, L. R. M.; COSTA, A. M. da; MOREIRA, J. A. A.; PEREIRA FILHO, I. A.; CRUZ, J. C.; VIANA, J. H. M.; OLIVEIRA, M. F.; CALAZANS, G. Estabilidade de agregados de um Lassolo Vermelho distrófico sob diferentes sistemas de manejo do solo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: Resumos expandidos... Goiânia: ABMS, 2010. 1 CD-ROM.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 13. | | QUEIROZ, L. R.; GONTIJO NETO, M. M.; ALVARENGA, R. C.; MENDES, F. F.; SIMAO, E. de P.; WILDA, L. R. M. Estoque de carbono e densidade de solo sob cultivo com diferentes culturas agrícolas, em Sete Lagoas, MG. In: CONGRESSO NACIONAL DE MILHO E SORGO, 29., 2012, Águas de Lindóia. Diversidade e inovações na era dos transgênicos: resumos expandidos. Campinas: Instituto Agronômico; Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2012. p. 1705-1711. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 14. | | RESENDE, A. V. de; LACERDA, J. J. de J.; HICKMAN, C.; WILDA, L. R. M.; FURTINI NETO, A. E.; SILVA, C. A.; MOREIRA, S. G. Repensando a adubação NPK em sistemas de alta produtividade de grãos. In: MOREIRA, F. M. de S; KASUYA, M. C. M. (Ed.). Fertilidade e biologia do solo: integração e tecnologia para todos. Viçosa, MG: Sociedade Brasileira de Ciência de Solo, 2016. v. 1. p. 541-558.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 15. | | CALAZANS, G. M.; WILDA, L. R. M.; NUNES, T.; MOREIRA, J. A. A.; PEREIRA FILHO, I. A.; CRUZ, J. C.; VIANA, J. H. M.; OLIVEIRA, M. F.; MARRIEL, I. E. Distribuição da atividade da urease em agregados do solo de Cerrado sob diferentes sistemas de manejo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: Resumos expandidos... Goiânia: ABMS, 2010. 1 CD-ROM.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 16. | | CALAZANS, G. M.; WILDA, L. R. M.; NUNES, T.; MOREIRA, J. A. A.; PEREIRA FILHO, I. A.; CRUZ, J. C.; VIANA, J. H. M.; OLIVEIRA, M. F. de; MARRIEL, I. E. Distribuição da atividade da urease em agregados do solo de Cerrado sob diferentes sistemas de manejo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: resumos expandidos... Sete Lagoas: ABMS, 2010. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 17. | | WILDA, L. R. M.; COSTA, A. M. da; MOREIRA, J. A. A.; PEREIRA FILHO, I. A.; CRUZ, J. C.; VIANA, J. H. M.; OLIVEIRA, M. F. de; CALAZANS, G. Estabilidade de agregados de um Lassolo Vermelho distrófico sob diferentes sistemas de manejo do solo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 28.; SIMPÓSIO BRASILEIRO SOBRE A LAGARTA DO CARTUCHO, 4., 2010, Goiânia. Potencialidades, desafios e sustentabilidade: resumos expandidos... Sete Lagoas: ABMS, 2010. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 17 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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