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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
29/01/2015 |
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Data da última atualização: |
16/10/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PARAIBA, L. C.; PAZIANOTTO, R. A. A.; LUIZ, A. J. B.; MAIA, A. de H. N.; JONSSON, C. M. |
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Afiliação: |
LOURIVAL COSTA PARAIBA, CNPMA; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; ALFREDO JOSE BARRETO LUIZ, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA; CLAUDIO MARTIN JONSSON, CNPMA. |
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Título: |
A mathematical model to estimate the volume of grey water of pesticide mixtures. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 2014. São Carlos. Anais... São Carlos, SP: Embrapa Instrumentação, 2014. |
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Páginas: |
p. 493-496. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: We propose a model to estimate the grey water footprint of crops by calculating the volume of water necessary to dilute pesticide mixtures reaching freshwaters. The model requires short-term toxicity data from aquatic organisms based on EC50 values, soil pesticide half-life and soil sorption coefficient values, and does not require maximum concentration limit acceptable in water. The lixiviation rate and runoff rate of each pesticide was estimated by attenuation factor and by Soilfug model, respectively. The usefulness of the proposed model was illustrated by estimating the volume of grey water required to dilute the 17 most widely used herbicides in sugarcane crops of Brazil. The grey water footprint corresponding to the recommended agronomic dose for each herbicide varied between 4.20×106 m3 yr-1 and 1.20×1012 m3 yr-1 and the grey water footprint of the mixture of herbicides was 2.36×1012 m3 yr-1 in a cultivated area of 8.4×106 ha. These results establish the ranking position of each herbicide in the composition of the grey water footprint of mixture of herbicides. The rank of each herbicide could be used to create a label to be placed on the package of the pesticide, thus informing farmers about the volume of grey water per hectare due to the use of this herbicide. |
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Palavras-Chave: |
Cana-de-açúcar; Herbicide. |
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Thesagro: |
Agrotóxico; Herbicida; Modelo matemático; Qualidade da água. |
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Thesaurus Nal: |
Environmental impact; Herbicides; Mathematical models; sugarcane; toxicity; water footprint; Water quality. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116924/1/2014AA43.pdf
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Marc: |
LEADER 02299nam a2200325 a 4500
001 2007175
005 2015-10-16
008 2014 bl uuuu u00u1 u #d
100 1 $aPARAIBA, L. C.
245 $aA mathematical model to estimate the volume of grey water of pesticide mixtures.$h[electronic resource]
260 $aIn: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 2014. São Carlos. Anais... São Carlos, SP: Embrapa Instrumentação$c2014
300 $ap. 493-496.
520 $aAbstract: We propose a model to estimate the grey water footprint of crops by calculating the volume of water necessary to dilute pesticide mixtures reaching freshwaters. The model requires short-term toxicity data from aquatic organisms based on EC50 values, soil pesticide half-life and soil sorption coefficient values, and does not require maximum concentration limit acceptable in water. The lixiviation rate and runoff rate of each pesticide was estimated by attenuation factor and by Soilfug model, respectively. The usefulness of the proposed model was illustrated by estimating the volume of grey water required to dilute the 17 most widely used herbicides in sugarcane crops of Brazil. The grey water footprint corresponding to the recommended agronomic dose for each herbicide varied between 4.20×106 m3 yr-1 and 1.20×1012 m3 yr-1 and the grey water footprint of the mixture of herbicides was 2.36×1012 m3 yr-1 in a cultivated area of 8.4×106 ha. These results establish the ranking position of each herbicide in the composition of the grey water footprint of mixture of herbicides. The rank of each herbicide could be used to create a label to be placed on the package of the pesticide, thus informing farmers about the volume of grey water per hectare due to the use of this herbicide.
650 $aEnvironmental impact
650 $aHerbicides
650 $aMathematical models
650 $asugarcane
650 $atoxicity
650 $awater footprint
650 $aWater quality
650 $aAgrotóxico
650 $aHerbicida
650 $aModelo matemático
650 $aQualidade da água
653 $aCana-de-açúcar
653 $aHerbicide
700 1 $aPAZIANOTTO, R. A. A.
700 1 $aLUIZ, A. J. B.
700 1 $aMAIA, A. de H. N.
700 1 $aJONSSON, C. M.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Classificação |
Cutter |
Registro |
Volume |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
28/07/2023 |
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Data da última atualização: |
28/07/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
CARVALHO, M. V. de; MORAES, P. I. C.; COELHO, S. V. B.; FIGUEIREDO, M. A. de; VILELA, A. L. O.; SOUZA, A. C. de; ROSA, S. D. V. F. da. |
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Afiliação: |
MARCOS VINÍCIOS DE CARVALHO, VIG SEMENTES; PALLOMA INDIARA CAPRONI MORAES, UNIVERSIDADE FEDERAL DE LAVRAS; STEFÂNIA VILAS BOAS COELHO, UNIVERSIDADE FEDERAL DE LAVRAS; MADELEINE ALVES DE FIGUEIREDO, UNIVERSIDADE FEDERAL DE LAVRAS; ANA LUIZA OLIVEIRA VILELA, UNIVERSIDADE FEDERAL DE LAVRAS; ANA CRISTINA DE SOUZA, UNIVERSIDADE FEDERAL DE LAVRAS; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa. |
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Título: |
Accelerated aging test for coffee seeds requires higher temperature. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 17, n. 6, 2023. |
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Páginas: |
8 p. |
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Idioma: |
Inglês |
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Conteúdo: |
The vigor tests are important tools used in the internal quality control by the seed companies. The accelerated aging test is a sensitive method for assessing the vigor of seed lots, as well as for estimating their storage potential. However, for coffee seeds there is little information about its use and efficiency. The objective of this study was to investigate methods of the accelerated aging test suitable for Coffea arabica L. seeds. Two studies were carried out. In the first, different temperatures (42°C, 44°C, and 46°C) and exposure times (0, 24, 48, 72, 96, 120, 144, 168, and 192 h) were investigated for the accelerated aging test. In the second, the best combinations of temperatures and exposure times were tested on coffee seeds from five different cultivars at temperatures of 44 and 46 ºC at times of 24, 48, 72, and 96 h of incubation. After each aging period, the water content of the seeds was determined, and physiological quality was evaluated by the germination test. The temperature of 42°C leads to slow deterioration of the seeds and is not recommended for evaluation of Coffea arabica L. seed vigor at the exposure times from 24 to 192 h tested here. The accelerated aging test, carried out at a temperature of 44ºC for 72 hours or at 46ºC for 48 hours, allows the Coffea arabica seed lots to be separated into different vigor levels. |
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Thesaurus NAL: |
Coffea arabica var. arabica; Deterioration; Quality control; Seeds. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1155400/1/Accelerated-aging-test-for-coffee-seeds-requires.pdf
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Marc: |
LEADER 02098naa a2200253 a 4500
001 2155400
005 2023-07-28
008 2023 bl uuuu u00u1 u #d
100 1 $aCARVALHO, M. V. de
245 $aAccelerated aging test for coffee seeds requires higher temperature.$h[electronic resource]
260 $c2023
300 $a8 p.
520 $aThe vigor tests are important tools used in the internal quality control by the seed companies. The accelerated aging test is a sensitive method for assessing the vigor of seed lots, as well as for estimating their storage potential. However, for coffee seeds there is little information about its use and efficiency. The objective of this study was to investigate methods of the accelerated aging test suitable for Coffea arabica L. seeds. Two studies were carried out. In the first, different temperatures (42°C, 44°C, and 46°C) and exposure times (0, 24, 48, 72, 96, 120, 144, 168, and 192 h) were investigated for the accelerated aging test. In the second, the best combinations of temperatures and exposure times were tested on coffee seeds from five different cultivars at temperatures of 44 and 46 ºC at times of 24, 48, 72, and 96 h of incubation. After each aging period, the water content of the seeds was determined, and physiological quality was evaluated by the germination test. The temperature of 42°C leads to slow deterioration of the seeds and is not recommended for evaluation of Coffea arabica L. seed vigor at the exposure times from 24 to 192 h tested here. The accelerated aging test, carried out at a temperature of 44ºC for 72 hours or at 46ºC for 48 hours, allows the Coffea arabica seed lots to be separated into different vigor levels.
650 $aCoffea arabica var. arabica
650 $aDeterioration
650 $aQuality control
650 $aSeeds
700 1 $aMORAES, P. I. C.
700 1 $aCOELHO, S. V. B.
700 1 $aFIGUEIREDO, M. A. de
700 1 $aVILELA, A. L. O.
700 1 $aSOUZA, A. C. de
700 1 $aROSA, S. D. V. F. da
773 $tAustralian Journal of Crop Science$gv. 17, n. 6, 2023.
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Registro original: |
Embrapa Café (CNPCa) |
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