Chemigation
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Characterization and selection method of Venturi injectors for pressurized irrigation
ABSTRACT Venturi-type chemigation injectors are widely used due to their advantages: they do not require electric power and are cheap to operate. However, they also generate considerable energy losses which affect the pressure in the system. The correct characterization of these systems requires pressures to be correctly set at the inlet, injector and outlet
Rev. Ciênc. Agron.. Publicado em: 2018-06
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2. Estudo do manejo da cultura do melÃo submetida à diferentes frequÃncias de irrigaÃÃo e fertirrigaÃÃo com N e P / Research of the melon crop management under different irrigation frequencies and N and P fertigation
O melÃo à a principal olerÃcola exportada pelo estado do CearÃ, sendo uma importante geradora de renda e empregos para a regiÃo. Em contrapartida, os produtores cearenses, alÃm de nÃo receberem muitos incentivos governamentais, enfrentam uma concorrÃncia desleal de produtores internacionais, principalmente espanhÃis e turcos, jà que estes receberem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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3. Performance and radial distribution profiles of a variable flow rate sprinkler developed for precision irrigation
Variable rate sprinklers (VRS) have been developed to promote localized water application of irrigated areas. In Precision Irrigation, VRS permits better control of flow adjustment and, at the same time, provides satisfactory radial distribution profiles for various pressures and flow rates are really necessary. The objective of this work was to evaluate the
Scientia Agricola. Publicado em: 2012-04
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4. Manejo do mofo branco (Sclerotinia sclerotiorum L.) em tomateiro industrial / Management of white mold (Sclerotinia sclerotiorumL.) in tomato industry
Brazil ranks ninth in the world production of tomato (Solanum esculentum L.), while much of this production is destined for processing industries. The added value obtained with the fruit processing endorses this species as the vegetable with the greatest economic importance in the Cerrado region of Brazil, where the State of Goiás stands out as the largest
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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5. Manejo do mofo branco (Sclerotinia sclerotiorum L.) em tomateiro industrial / Management of white mold (Sclerotinia sclerotiorumL.) in tomato industry
Brazil ranks ninth in the world production of tomato (Solanum esculentum L.), while much of this production is destined for processing industries. The added value obtained with the fruit processing endorses this species as the vegetable with the greatest economic importance in the Cerrado region of Brazil, where the State of Goiás stands out as the largest
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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6. Desempenho de injetores tipo Venturi em condicoes de descarga livre e pressurizada.
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Engenharia Agricola. Publicado em: 2011
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7. Desenvolvimento e avaliação de um programa computacional para o ensino à distância de tecnologia de aplicação de agroquímicos / Development and evaluation of a computer program for distance learning about pesticide application technology
Distance learning presents great potential for mitigating field problems on pesticide spraying technology. This methodology does not intend to replace live trainings, but complement them, especially considering the importance of field practices for this activity. Thus, due to the lack of teaching material about pesticide spraying technology and the increasin
Publicado em: 2009
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8. Programa computacional para avaliaÃÃo da uniformidade e eficiÃncia de aplicaÃÃo em sistemas de irrigaÃÃo por pivà central sob condiÃÃes de quimigaÃÃo
Considerando a importÃncia da avaliaÃÃo de sistemas de irrigaÃÃo por pivà central, para determinar suas caracterÃsticas operacionais e seu correto manejo, o presente trabalho estabeleceu como objetivo elaborar o programa proPIVÃ, para ambiente Windows, em linguagem Visual Basic, que auxilia tÃcnicos na obtenÃÃo de valores de eficiÃncia, em potenc
Publicado em: 2006
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9. Uso de óleos sem surfactantes na aplicação de clorpirifós via insetigação na cultura de milho. / Use of oils without emulsifiers to apply chlorpirifos through insectigation on corn.
Irrigation is perceived by the farmers as the best payback technology, beside its initial investment cost. With the end of subsidized interests for agriculture in the last years, irrigated farmers are more and more looking for shorter paybacks of their investments. The alternatives presented are successive cropping (annual crops) or more that one harvest (pe
Publicado em: 2003