| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agricultura Digital. |
|
Data corrente: |
07/02/2011 |
|
Data da última atualização: |
27/01/2020 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
MAGALHAES, P. S. G.; QUEIROS, L. R.; GADANHA, C. D. |
|
Afiliação: |
P. S. GRAZIANO MAGALHAES, FEAGRI/UNICAMP; LEONARDO RIBEIRO QUEIROS, CNPTIA; C. D. GADANHA, ESALQ/USP. |
|
Título: |
Mepiquat chloride application on cotton at variable rate. |
|
Ano de publicação: |
2010 |
|
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 10., 2010, Denver. Proceedings... Denver: Denver Tech Center, 2010. |
|
Páginas: |
Não paginado. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Mepiquat chloride (1.1 - dimethylpiperidinium chloride) are used to control excessive vegetative growth in cotton (Gossypium hirsutum L.) broadcast sprayed by ground or air. As proven by previous researches the variability of the cotton plants height in the field is large enough to justify the application of Mepiquat at variable rate. The major advantages of it are: (i) yield increase; (ii) economy of the applied input; (iii) reducing the potential of environmental pollution. The main objective of this project was to develop a prototype device capable to accomplish the application of Mepiquat at variable rate in real time. This project used an equipment previously developed for automatic mapping of the cotton plants height based on ultrasound transducers. An electronic control device for ground sprayers was designed and constructed based on microcontroller PIC, using open source tools as Java, Linux operational system and IDE Netbeans. The device controls the pressure and flow in the spray line and uses Varitarget® nozzles due to its characteristics of linearity of flow and pressure. The calculation of the Mepiquat dosage to be applied is based on the obtained information of the plants heights and the map of previous application. The laboratory results demonstrate the accuracy of the equipment, with low response time considering the commercial sprayers velocity (3 m.s-1 to 5 m.s-1). |
|
Palavras-Chave: |
Crescimento vegetativo em algodão; Microcontrolador; Open source tools; Software; Sprayer; Varitarget. |
|
Thesagro: |
Gossypium Hirsutum; Inibidor de Crescimento. |
|
Thesaurus Nal: |
Mepiquat. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/26507/1/abstract-244.pdf
|
|
Marc: |
LEADER 02203nam a2200253 a 4500
001 1875972
005 2020-01-27
008 2010 bl uuuu u00u1 u #d
100 1 $aMAGALHAES, P. S. G.
245 $aMepiquat chloride application on cotton at variable rate.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 10., 2010, Denver. Proceedings... Denver: Denver Tech Center$c2010
300 $aNão paginado.
520 $aMepiquat chloride (1.1 - dimethylpiperidinium chloride) are used to control excessive vegetative growth in cotton (Gossypium hirsutum L.) broadcast sprayed by ground or air. As proven by previous researches the variability of the cotton plants height in the field is large enough to justify the application of Mepiquat at variable rate. The major advantages of it are: (i) yield increase; (ii) economy of the applied input; (iii) reducing the potential of environmental pollution. The main objective of this project was to develop a prototype device capable to accomplish the application of Mepiquat at variable rate in real time. This project used an equipment previously developed for automatic mapping of the cotton plants height based on ultrasound transducers. An electronic control device for ground sprayers was designed and constructed based on microcontroller PIC, using open source tools as Java, Linux operational system and IDE Netbeans. The device controls the pressure and flow in the spray line and uses Varitarget® nozzles due to its characteristics of linearity of flow and pressure. The calculation of the Mepiquat dosage to be applied is based on the obtained information of the plants heights and the map of previous application. The laboratory results demonstrate the accuracy of the equipment, with low response time considering the commercial sprayers velocity (3 m.s-1 to 5 m.s-1).
650 $aMepiquat
650 $aGossypium Hirsutum
650 $aInibidor de Crescimento
653 $aCrescimento vegetativo em algodão
653 $aMicrocontrolador
653 $aOpen source tools
653 $aSoftware
653 $aSprayer
653 $aVaritarget
700 1 $aQUEIROS, L. R.
700 1 $aGADANHA, C. D.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
19/11/2018 |
|
Data da última atualização: |
19/11/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
SIMON, P. L.; DIECKOW, J.; KLEIN, C. A. M. de; ZANATTA, J. A.; WEERDEN, T. J. van der; RAMALHO, B.; BAYER, C. |
|
Afiliação: |
Priscila Luzia Simon, UFPR; Jeferson Dieckow, UFPR; Cecile A. M. de Klein, AgResearch Invermay; JOSILEIA ACORDI ZANATTA, CNPF; Tony J. van der Weerden, AgResearch Invermay; Bruna Ramalho, UFPR; Cimelio Bayer, UFRGS. |
|
Título: |
Nitrous oxide emission factors from cattle urine and dung, and dicyandiamide (DCD) as a mitigation strategy in subtropical pastures. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 267, p. 74-82, Nov. 2018. |
|
DOI: |
10.1016/j.agee.2018.08.013 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may need to be revised for the subtropical region. Additionally, this revision should consider the disaggregation of the EF for urine and dung. As a mitigation strategy, the use of DCD had a potential to curb N2O emission from urine patches, particularly in the cooler seasons of autumn and winter, when it reduced emissions by 60?82% after being dissolved in urine. DCD sprayed on excreta patches significantly reduced emissions in autumn only (by 47%) and thus was less efficient than when dissolved in urine. With respect to dung, there was no clear evidence that N2O emission from that excreta is mitigated by DCD, either dissolved into the dung mass or sprayed over the dung pat. MenosThe Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may... Mostrar Tudo |
|
Palavras-Chave: |
Ammonium; Application mode; Friesian cows; Inibidor de nitrificação; Nitrate; Nitrification inhibitor; WFPS. |
|
Thesagro: |
Amônia; Gado Holandês; Nitrato. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 03159naa a2200325 a 4500
001 2099548
005 2018-11-19
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agee.2018.08.013$2DOI
100 1 $aSIMON, P. L.
245 $aNitrous oxide emission factors from cattle urine and dung, and dicyandiamide (DCD) as a mitigation strategy in subtropical pastures.$h[electronic resource]
260 $c2018
520 $aThe Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may need to be revised for the subtropical region. Additionally, this revision should consider the disaggregation of the EF for urine and dung. As a mitigation strategy, the use of DCD had a potential to curb N2O emission from urine patches, particularly in the cooler seasons of autumn and winter, when it reduced emissions by 60?82% after being dissolved in urine. DCD sprayed on excreta patches significantly reduced emissions in autumn only (by 47%) and thus was less efficient than when dissolved in urine. With respect to dung, there was no clear evidence that N2O emission from that excreta is mitigated by DCD, either dissolved into the dung mass or sprayed over the dung pat.
650 $aAmônia
650 $aGado Holandês
650 $aNitrato
653 $aAmmonium
653 $aApplication mode
653 $aFriesian cows
653 $aInibidor de nitrificação
653 $aNitrate
653 $aNitrification inhibitor
653 $aWFPS
700 1 $aDIECKOW, J.
700 1 $aKLEIN, C. A. M. de
700 1 $aZANATTA, J. A.
700 1 $aWEERDEN, T. J. van der
700 1 $aRAMALHO, B.
700 1 $aBAYER, C.
773 $tAgriculture, Ecosystems and Environment$gv. 267, p. 74-82, Nov. 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
