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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/05/2020 |
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Data da última atualização: |
25/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; OLIVEIRA, S. A. S. de; OTTO, C.; ALICAI, T.; FREITAS, J. P. X. de; CORTES, D. F. M.; PARIYO, A.; LIRI, C.; ADIGA, G.; BALMER, A.; ROBINSON, M. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; CAROLINE OTTO, Syngenta Foundation for Sustainable Agriculture; TITUS ALICAI, NaCRRI; JUAN PAULO XAVIER DE FREITAS; DIEGO FERNANDO MARMOLEJO CORTES; ANTHONY PARIYO; CHARLES LIRI, NaCRRI; GERALD ADIGA, NaCRRI; ANDREA BALMER, Syngenta Foundation for Sustainable Agriculture; MIKE ROBINSON, Syngenta Foundation for Sustainable Agriculture. |
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Título: |
A novel seed treatment-based multiplication approach for cassava planting material. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Plos One, v.15, n.3, e0229943, March, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a factor of up to 3. Notably, this was possible under regular field conditions and independently of any specialised treatment facilities. Compared with existing seed production protocols, the increased multiplication rates allowed for efficiency gains of between 1 to 1.9 years compared to conventional five-year cycles. We believe that the technology described here holds considerable promise for developing more reliable and remunerative delivery channels for quality cassava planting material and improved genetics. MenosCassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/212900/1/Oliveira-et-al-PlosOne-2020.pdf
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Marc: |
LEADER 02737naa a2200265 a 4500
001 2122236
005 2021-01-25
008 2020 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, E. J. de
245 $aA novel seed treatment-based multiplication approach for cassava planting material.$h[electronic resource]
260 $c2020
520 $aCassava (Manihot esculenta Crantz) is an important food security crop in many parts of the developing world. The crop?s high yield potential and multitude of uses?both for nutrition and processing?render cassava a promising driver for the development of rural value chains. It is traditionally propagated from stem cuttings of up to 30 cm in length, giving a multiplication rate as low as 1:10. Propagating cassava traditionally is very inefficient, which leads to challenges in the production and distribution of quality planting material and improved cultivars, greatly limiting the impact of investments in crop breeding. The work described in the present study aimed to develop a seed treatment approach to facilitate the use of shorter seed pieces, increasing the multiplication rate of cassava and thus making the crop?s seed systems more efficient. After several tests, formulation was identified, consisting of thiamethoxam 21 g ha-1, mefenoxam 1.0 g ha-1, fludioxonil 1.3 g ha-1, thiabendazole 7.5 g ha-1 and Latex 2% as a binder. Plant growing from seed pieces treated with this formulation displayed increased crop establishment and early crop vigor, leading to an improved productivity throughout a full growing cycle. This allowed to reduce the cassava seed piece size to 8 cm with no negative effects on germination and crop establishment, leading to yields comparable to those from untreated 16 cm pieces. This, in turn, will allow to increase the multiplication ratio of cassava by a factor of up to 3. Notably, this was possible under regular field conditions and independently of any specialised treatment facilities. Compared with existing seed production protocols, the increased multiplication rates allowed for efficiency gains of between 1 to 1.9 years compared to conventional five-year cycles. We believe that the technology described here holds considerable promise for developing more reliable and remunerative delivery channels for quality cassava planting material and improved genetics.
650 $aCassava
650 $aMandioca
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aOTTO, C.
700 1 $aALICAI, T.
700 1 $aFREITAS, J. P. X. de
700 1 $aCORTES, D. F. M.
700 1 $aPARIYO, A.
700 1 $aLIRI, C.
700 1 $aADIGA, G.
700 1 $aBALMER, A.
700 1 $aROBINSON, M.
773 $tPlos One$gv.15, n.3, e0229943, March, 2020.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
03/02/2017 |
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Data da última atualização: |
03/11/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
KUWANO, B. H.; NOGUEIRA, M. A.; SANTOS, C. A.; FAGOTTI, D. S. L.; SANTOS, M. B.; LESCANO, L. E. A. M.; ANDRADE, D. S.; BARBOSA, G. M. C.; TAVARES-FILHO, J. |
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Afiliação: |
MARCO ANTONIO NOGUEIRA, CNPSO. |
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Título: |
Application of Landfill Leachate Improves Wheat Nutrition and Yield but Has Minor Effects on Soil Properties. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Environmental Quality, Madison, v. 46, n. 1, p. 153-159, Jan./Feb. 2017. |
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ISSN: |
1537-2537 |
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DOI: |
10.2134/jeq2016.02.0041 |
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Idioma: |
Inglês |
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Conteúdo: |
Landfill leachates, which are potential pollutants, may also carry significant amounts of nutrients that can be recycled by plants. We assessed the nutritional status and yield of wheat (Triticum aestivum L.) and properties of a Rhodic Kandiudult soil (depths of 0–10, 10–20, 20–40, and 40–60 cm) after 11 applications of landfill leachate over 4 yr. In the last application, wheat received 0, 32.7, 65.4, 98.1, or 130.8 m3 ha?1 (875 mg L?1 of nitrogen, N) of leachate and a positive control (90 kg ha?1 of N as urea) 15 d after sowing. Urea increased nitrate (>160 mg kg?1) in the topsoil (down to 40 cm), whereas landfill leachate increased nitrate (>60 mg kg?1) only at 40 to 60 cm with the highest dose, suggesting leaching. Urea-treated soil had less negative ?pH, which might have led to greater retention of nitrate in the topsoil. Sodium (0.02–0.26 cmolc Na kg?1), potassium (0.18–0.82 cmolc K kg?1), and electrical conductivity (0.05–0.14 dS m?1) all increased with leachate dosage. Treatments did not affect resistance to penetration and clay dispersion. Basal respiration increased with leachate dosage, whereas dehydrogenase activity decreased, suggesting effects on soil microbial metabolism. Microbial biomass and soil enzyme activities were not affected by addition of leachate. Nitrogen nutrition (15.1–22.7 g N kg?1 in flag leaves) and grain yield (1381–2378 kg grain ha?1) increased with leachate dosage so that the highest dose gave results similar to those for urea-treated plants (2563 kg grain ha?1). Landfill leachate showed strong potential as source of N for wheat but caused none, or transient, effects on soil properties. However, nitrate from leachate was more leachable than nitrate from urea. MenosLandfill leachates, which are potential pollutants, may also carry significant amounts of nutrients that can be recycled by plants. We assessed the nutritional status and yield of wheat (Triticum aestivum L.) and properties of a Rhodic Kandiudult soil (depths of 0–10, 10–20, 20–40, and 40–60 cm) after 11 applications of landfill leachate over 4 yr. In the last application, wheat received 0, 32.7, 65.4, 98.1, or 130.8 m3 ha?1 (875 mg L?1 of nitrogen, N) of leachate and a positive control (90 kg ha?1 of N as urea) 15 d after sowing. Urea increased nitrate (>160 mg kg?1) in the topsoil (down to 40 cm), whereas landfill leachate increased nitrate (>60 mg kg?1) only at 40 to 60 cm with the highest dose, suggesting leaching. Urea-treated soil had less negative ?pH, which might have led to greater retention of nitrate in the topsoil. Sodium (0.02–0.26 cmolc Na kg?1), potassium (0.18–0.82 cmolc K kg?1), and electrical conductivity (0.05–0.14 dS m?1) all increased with leachate dosage. Treatments did not affect resistance to penetration and clay dispersion. Basal respiration increased with leachate dosage, whereas dehydrogenase activity decreased, suggesting effects on soil microbial metabolism. Microbial biomass and soil enzyme activities were not affected by addition of leachate. Nitrogen nutrition (15.1–22.7 g N kg?1 in flag leaves) and grain yield (1381–2378 kg grain ha?1) increased with leachate dosage so that the highest dose gave results similar to those for urea-treated plant... Mostrar Tudo |
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Thesagro: |
Pedologia; Trigo. |
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Thesaurus NAL: |
Soil properties; Wheat. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02618naa a2200289 a 4500
001 2062630
005 2017-11-03
008 2017 bl uuuu u00u1 u #d
022 $a1537-2537
024 7 $a10.2134/jeq2016.02.0041$2DOI
100 1 $aKUWANO, B. H.
245 $aApplication of Landfill Leachate Improves Wheat Nutrition and Yield but Has Minor Effects on Soil Properties.$h[electronic resource]
260 $c2017
520 $aLandfill leachates, which are potential pollutants, may also carry significant amounts of nutrients that can be recycled by plants. We assessed the nutritional status and yield of wheat (Triticum aestivum L.) and properties of a Rhodic Kandiudult soil (depths of 0–10, 10–20, 20–40, and 40–60 cm) after 11 applications of landfill leachate over 4 yr. In the last application, wheat received 0, 32.7, 65.4, 98.1, or 130.8 m3 ha?1 (875 mg L?1 of nitrogen, N) of leachate and a positive control (90 kg ha?1 of N as urea) 15 d after sowing. Urea increased nitrate (>160 mg kg?1) in the topsoil (down to 40 cm), whereas landfill leachate increased nitrate (>60 mg kg?1) only at 40 to 60 cm with the highest dose, suggesting leaching. Urea-treated soil had less negative ?pH, which might have led to greater retention of nitrate in the topsoil. Sodium (0.02–0.26 cmolc Na kg?1), potassium (0.18–0.82 cmolc K kg?1), and electrical conductivity (0.05–0.14 dS m?1) all increased with leachate dosage. Treatments did not affect resistance to penetration and clay dispersion. Basal respiration increased with leachate dosage, whereas dehydrogenase activity decreased, suggesting effects on soil microbial metabolism. Microbial biomass and soil enzyme activities were not affected by addition of leachate. Nitrogen nutrition (15.1–22.7 g N kg?1 in flag leaves) and grain yield (1381–2378 kg grain ha?1) increased with leachate dosage so that the highest dose gave results similar to those for urea-treated plants (2563 kg grain ha?1). Landfill leachate showed strong potential as source of N for wheat but caused none, or transient, effects on soil properties. However, nitrate from leachate was more leachable than nitrate from urea.
650 $aSoil properties
650 $aWheat
650 $aPedologia
650 $aTrigo
700 1 $aNOGUEIRA, M. A.
700 1 $aSANTOS, C. A.
700 1 $aFAGOTTI, D. S. L.
700 1 $aSANTOS, M. B.
700 1 $aLESCANO, L. E. A. M.
700 1 $aANDRADE, D. S.
700 1 $aBARBOSA, G. M. C.
700 1 $aTAVARES-FILHO, J.
773 $tJournal of Environmental Quality, Madison$gv. 46, n. 1, p. 153-159, Jan./Feb. 2017.
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