Harmful Plants
Mostrando 25-36 de 80 artigos, teses e dissertações.
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25. Reúso de efluente de esgoto sanitário anaeróbio e nitrificado em irrigação de roseiras / Reuse of anaerobic and nitrified wastewater effluents for irrigation of roses
Wastewater secondary treatment plants effluent may contain, yet, nutrients in amounts harmful to the environment. These effluents discharging can cause eutrophication in receiving waters, making it unsuitable for intended uses, such as provision for human consumption, leisure activities, etc. Besides the problem of eutrophication, there is the difficulty to
Publicado em: 2011
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26. Effect of conspecific and plant volatiles of Murraya paniculata (L.) JACK, Psidium guajava L. and Citrus sinensis (L.) Osbeck on the behavior OF Diaphorina citri Kuwayama (Hemiptera: Psyllidae) / Efeito dos coespecíficos e voláteis das plantas Murraya paniculata (L.) Jack, Psidium guajava L. e Citrus sinensis (L.) Osbeck sobre o comportamento de Diaphorina citri Kuwayama (Hemiptera:Psyllidae)
The agro-ecosystems consist of complex trophic relationships between plants, herbivores and their natural enemies. It is known that the majority of plants can produce volatiles compounds used as chemical signals by different groups of insects. These compounds can be produced constitutively in healthy plants, i.e., without induction. In other hand, the produc
Publicado em: 2010
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27. Absorção, eficiência de uso e partição do fósforo em plantas cítricas / Uptake, use and partitioning of phosphorous in citrus plants
The low phosphorus (P) availability is often a growth-limiting to a number of crops growing in Brazil, including citrus plants. Therefore, we expected that studies about P citrus nutrition could be useful to improve the management of these plants at low-P soils. Therefore, four experiments were carried out under greenhouse conditions. As strategy, acid phosp
Publicado em: 2010
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28. Interaction of Metarhizium anisopliae (Metsch), Beauveria bassiana (Bals.) and granulovirus, the main pathogens of Diatraea saccharalis (Fabr., 1794) (Lepidoptera: Crambidae) / Interação de Metarhizium anisopliae (Metsch.), Beauveria bassiana (Bals.) e vírus da granulose, principais patógenos de Diatraea saccharalis (Fabr., 1794) (Lepidoptera: Crambidae)
The sugarcane borer, Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) is naturally infected by various pathogens, the most important are Metarhizium anisopliae (Metsch) (Ascomycota: Clavicipitaceae), Beauveria bassiana (Bals.) (Ascomycota: Cordycipitaceae) and granulovirus. These microorganisms may coinfect the same host under field conditions
Publicado em: 2010
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29. Efficiency of flamers in the weeds control / Eficiencia de flamejadores no controle de plantas daninhas
In agricultural production systems have been employed various techniques to achieve the goals focused on sustainability. Tactics or tools of management are adopted in order to provide greater productivity, lower impact on natural resources and better human development. The control of weeds in these systems has sued constant studies for improving performance
Publicado em: 2009
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30. BORON REMOVAL FROM OIL PRODUCTION WASTEWATER AND EFFLUENTS BY ADSORPTION / REMOÇÃO DE BORO DE ÁGUAS E EFLUENTES DE PETRÓLEO POR ADSORÇÃO
The presence of boron in waters has increased continually and in parallel to the industrial development. And also, the harmful effects to the organisms and living creatures has increased as well, especially on plants, where the gap between the deficiency and the toxicity is very short. In the present work it was investigated the effects of different operatin
Publicado em: 2009
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31. QUIMIOTERAPIA E TERMOTERAPIA NO CONTROLE DO Colletotrichum gloeosporioides, AGENTE DA MANCHA MANTEIGOSA, EM CAFEEIRO (Coffea arabica L.) / Chemotherapy and thermothetapy to control of Colletotrichum gloeosporioides, agent of blister spot in coffee (Coffea arabica L.)
Seeds play a fundamental role in the dissemination of plant pathogens to long distances and transmission of them to plant. In many crops, fungi can be associated with seeds in all the stages of crop production in addition to surviving longer. For coffee plantation, the transmission by seeds of Colletotrichum gloeosporioides, causal agent of blister spot is a
Publicado em: 2009
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32. Evaluation of techniques of forest restoration of area dominated for Leucaena leucocephala (Lam) of Wit., Ipatinga, MG / Avaliaçao de técnicas de restauração florestal de área dominada por Leucaena leucocephala (Lam) de Wit. em Ipatinga, MG
The objective this to characterize the soil seed bank an area of Ribeirão Ipanema, Ipatinga city, MG, domined for Leucaena leucocephala (PL); to compare the results gotten in the seed bank of Parque Estadual do Rio Doce’s (PERD) area delimited, same city; to analyze the sowing of one mix of seeds in modules and to evaluate the alternative of seedlings
Publicado em: 2009
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33. Avaliação de descritores texturais geoestatísticos e de Haralick para o reconhecimento de plantas daninhas / Evaluation of geoestatistic textural descriptor and of Haralick for the recognition of harmful plants
A preocupação em minimizar a quantidade de produtos químicos utilizado em lavouras vem aumentando. O uso de sistemas de visão artificial tem demonstrado um grande potencial para o uso de taxas variadas de insumos, como por exemplo, a aplicação de herbicidas somente em locais onde é detectada a presença de planta daninha. O bom desempenho de um sistem
Publicado em: 2009
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34. Evaluation of agricultural productivity and of metals concentration in grains of corn irrigated with anaerobic effluent / Avaliação de produtividade agricola e de concentrações de metais nos grãos, de cultura de milho irrigada com efluente anaerobio
This work had the objective to evaluate the impact of wastewater irrigation on the productivity of corn using effluent from an anaerobic pond, and on physico-chemical and microbiological system soil-water-plant. Using the technique of irrigation by shallow furrows, will be tested 3 treatments corresponding to fertilizer and natural water available, effluent
Publicado em: 2008
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35. Fertirrigation of coffee crop with domestic sewage Risks of salinization and soil contamination / Fertirrigação do cafeeiro com esgoto doméstico Riscos de salinização e contaminação do solo
Due to the great availability, the use of domestic sewage in irrigated agriculture is an effective control of pollution, increase of water availability, showing economic, social, environmental and public health benefits. Nevertheless, the use of sewage must be well planned and managed to avoid problems of microbial contamination as well as negative changes o
Publicado em: 2008
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36. RESIDUALS FROM TWO HERBICIDES IMAZETHAPYR AND IMAZAPIC ON PADDY RICE WITH DIFFERENTS SOIL MANAGEMENTS / RESIDUAL DA MISTURA FORMULADA DOS HERBICIDAS IMAZETHAPYR E IMAZAPIC EM ÁREAS DE ARROZ SOB DIFERENTES MANEJOS DE SOLO
Red rice (Oryza spp.) is one of the main limiting factors of rice yield (O. sativa L.) in the world and particularly in the Rio Grande do Sul (RS) state Brazil. The Clearfield technology is a viable and efficient tool for controlling such harmful plant by using imidazolinone herbicides in tolerant cultivars. However, herbicides may persist on the soil after
Publicado em: 2008