Estabelecimento de condições operacionais para o bico rotativo micromax na aplicação do herbicida glyphosate

Oliveira, P. C. R.; Matuo, T.

doi:10.1590/S0100-83581984000200006

Resumos

Alguns parâmetros operaciona is do bico rotativo Micromax para apli cação do herbi cida glypho sate foram estudados em condições de laboratório. O bico Micromax a 1.600 rpm e vazão de 0,96 //min forneceu gotas com vmd de 280 μm e à vazão de 0,43 i/min , de 232 μm, sendo que em ambas as condições o coeficient e de dispersão (r = vmd/nmd) foi inferior a 1,4, atendendo, portanto, às especificações para o processo CDA. A distância entre bicos a serem montadas numa barra foi determinada em mesa de estudo do padrão de deposição foi de 1,80 m para a vazão de 0,96 Z/min e concentração da formulação comercial do glyphosate entre 4% e 6%. Essa distancia foi de 1,40 m para vazão de 0,43 1/min e concentração de glyphosate entre 9% e 13%. Distancias fora dessas especificações produziram deposições bastante irregulares sob a barra de pulverização.

CDA; bico centrifugo; bico rotativo padrão de deposição; pulverização

Some operation al parameters of Micromax rotary atomizers in the application of glyphosate were studied under laboratory conditions. Micromax nozzle at 1.600 rpm and 0,96 1/min feed rate produced 280m vmd droplets and 0,43 1/min feed rate, produ ced 232 m vmd droplets. In both conditions the dispersion coefficien t (r = vmd/nmd) was bellow 1,4, attending to the spedfication for CDA. Nozzl espacement between Micromax heads in a spray boom was estab lished as 1,80 m for 0,96 1/min feed rate using 4% to 6% glyphosate (commercia l) solution and 1,40 m for 0,43 Z/min feed rate using 9% to 13% solution. Nozzle spacement out of these specifications produces very irregular deposition patterns.

CDA; centrifugal nozzle; rotary atomizer; deposition pattern; spray

ARTIGOS

Estabelecimento de condições operacionais para o bico rotativo micromax na aplicação do herbicida glyphosate

Establishment of operational conditions for micromax rotary atomizers in the application of glyphosate

P. C. R. Oliveira^I; T. Matuo^II

^IEstagiário da FCAV-UNESP

^IIProfessor -Assistente -Doutor da FCAV-UNESP 14870 - Jaboticabal, SP

RESUMO

Alguns parâmetros operaciona is do bico rotativo Micromax para apli cação do herbi cida glypho sate foram estudados em condições de laboratório. O bico Micromax a 1.600 rpm e vazão de 0,96 //min forneceu gotas com vmd de 280 μm e à vazão de 0,43 i/min , de 232 μm, sendo que em ambas as condições o coeficient e de dispersão (r = vmd/nmd) foi inferior a 1,4, atendendo, portanto, às especificações para o processo CDA. A distância entre bicos a serem montadas numa barra foi determinada em mesa de estudo do padrão de deposição foi de 1,80 m para a vazão de 0,96 Z/min e concentração da formulação comercial do glyphosate entre 4% e 6%. Essa distancia foi de 1,40 m para vazão de 0,43 1/min e concentração de glyphosate entre 9% e 13%. Distancias fora dessas especificações produziram deposições bastante irregulares sob a barra de pulverização.

Palavras-chave: CDA, bico centrifugo, bico rotativo padrão de deposição, pulverização.

SUMMARY

Some operation al parameters of Micromax rotary atomizers in the application of glyphosate were studied under laboratory conditions. Micromax nozzle at 1.600 rpm and 0,96 1/min feed rate produced 280m vmd droplets and 0,43 1/min feed rate, produ ced 232 m vmd droplets. In both conditions the dispersion coefficien t (r = vmd/nmd) was bellow 1,4, attending to the spedfication for CDA. Nozzl espacement between Micromax heads in a spray boom was estab lished as 1,80 m for 0,96 1/min feed rate using 4% to 6% glyphosate (commercia l) solution and 1,40 m for 0,43 Z/min feed rate using 9% to 13% solution. Nozzle spacement out of these specifications produces very irregular deposition patterns.

Key words: CDA, centrifugal nozzle, rotary atomizer, deposition pattern, spray.

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

LITERATURA CITADA

1. Adas (Agricultural Division Advisory Service) Controlled droplet application of agricultural chemical. Northumberland Ministry of Agriculture Fisheries and Food. Inglaterra, 1981. 11p.
2. Bals, E.J. The reasons for C.D.A. (Controlled drop application). In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 101-106.
3. Bode, L.E. & Butle, B.J. Spray characteristics of rotary atomizer. Pesticide Formution and application Systems: Second Conference, ASTM STP 795, Kg Seymour, Ed. American Society for Testing and materials, Philadelphia, 1983. p. 89-104.
4. Combellack, J.H. The value of controlled droplet application (C.D.A.) as spot spray technique for control of noxious weeds in Victória. In: CONFERENCE OF THE COUNCIL OF AUSTRALIAN WEED SCIENCE SOCIETIES, 5ş Victória, 1978. Proceedings 15-24.
5. Combellack, J.H. & Harris, R.V. Field trials with CDA spot sprayers. In: CONFERENCE OF THE COUNCIL OF AUSTRALIAN WEED SCIENCE SOCIETIES, 5ş, Victória, 1978. Proceedings. p. 39-49.
6. Heijne, C.G. A study of the effects of disc speed and flow rate on the performance of the Micron Battleship. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 673-679.
7. Johnstone, D.R. The influence of physical and meteorological factors on the deposition and drif of spray droplets of controlled size. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, reading 12^th-13^th April, 1978. Proceedings. p.43-57.
8. Johnstone, D.R. Statistical description of spray drop size for controlled drop application. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, Reading, 12^th-13^th, April, 1978. Proceedings. p.7-21.
9. Lake, J.R.; Frost, A.R.; Green, R. Measurements of drop size and spray distribution from a Micron Herbi disc. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton. 1976. Proceedings. v.2, p. 399-405.
10. Lavers, A. & Stovell, F.R. A review of broad-leaved weed and wild-oat herbicides at reduced volume rates. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 717-728.
11. Lush, G.B. Preface. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, Reading, 12^th-13^th April, 1978. Proceedings.
12. Matthews, G.A. Pesticide application methods. Londres, Longman, 1979. 325p.
13. Nation, H.J. The preference and stability of spray booms. In: SPRAYING SYSTEMS FOR THE 1980´s. p. 145-158, 1980.

Datas de Publicação

Publicação nesta coleção
02 Jul 2012
Data do Fascículo
1984

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] 1. Adas (Agricultural Division Advisory Service) Controlled droplet application of agricultural chemical. Northumberland Ministry of Agriculture Fisheries and Food. Inglaterra, 1981. 11p.

[2] 2. Bals, E.J. The reasons for C.D.A. (Controlled drop application). In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 101-106.

[3] 3. Bode, L.E. & Butle, B.J. Spray characteristics of rotary atomizer. Pesticide Formution and application Systems: Second Conference, ASTM STP 795, Kg Seymour, Ed. American Society for Testing and materials, Philadelphia, 1983. p. 89-104.

[4] 4. Combellack, J.H. The value of controlled droplet application (C.D.A.) as spot spray technique for control of noxious weeds in Victória. In: CONFERENCE OF THE COUNCIL OF AUSTRALIAN WEED SCIENCE SOCIETIES, 5ş Victória, 1978. Proceedings 15-24.

[5] 5. Combellack, J.H. & Harris, R.V. Field trials with CDA spot sprayers. In: CONFERENCE OF THE COUNCIL OF AUSTRALIAN WEED SCIENCE SOCIETIES, 5ş, Victória, 1978. Proceedings. p. 39-49.

[6] 6. Heijne, C.G. A study of the effects of disc speed and flow rate on the performance of the Micron Battleship. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 673-679.

[7] 7. Johnstone, D.R. The influence of physical and meteorological factors on the deposition and drif of spray droplets of controlled size. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, reading 12^th-13^th April, 1978. Proceedings. p.43-57.

[8] 8. Johnstone, D.R. Statistical description of spray drop size for controlled drop application. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, Reading, 12^th-13^th, April, 1978. Proceedings. p.7-21.

[9] 9. Lake, J.R.; Frost, A.R.; Green, R. Measurements of drop size and spray distribution from a Micron Herbi disc. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton. 1976. Proceedings. v.2, p. 399-405.

[10] 10. Lavers, A. & Stovell, F.R. A review of broad-leaved weed and wild-oat herbicides at reduced volume rates. In: BRITISH CROP PROTECTION CONFERENCE WEEDS, Brighton, 1978. Proceedings. p. 717-728.

[11] 11. Lush, G.B. Preface. In: SYMPOSIUM ON CONTROLLED DROP APPLICATION, Reading, 12^th-13^th April, 1978. Proceedings.

[12] 12. Matthews, G.A. Pesticide application methods. Londres, Longman, 1979. 325p.

[13] 13. Nation, H.J. The preference and stability of spray booms. In: SPRAYING SYSTEMS FOR THE 1980´s. p. 145-158, 1980.

Brasil

Brasil

Estabelecimento de condições operacionais para o bico rotativo micromax na aplicação do herbicida glyphosate

Establishment of operational conditions for micromax rotary atomizers in the application of glyphosate

Resumos

Datas de Publicação