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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Desempenho de sementes de milho tratadas com tiametoxam em função da dose e armazenamento / Performance of maize seeds treated with the product thiamethoxam based in rates and storage

Nunes, João Carlos da Silva 05 August 2008 (has links)
Made available in DSpace on 2014-08-20T13:44:43Z (GMT). No. of bitstreams: 1 dissertacao_joao_carlos_da_silva_nunes.pdf: 221669 bytes, checksum: 43accaeb3888e6b5486fe4f1c45718d3 (MD5) Previous issue date: 2008-08-05 / The objective of this work was to verify the immediate and latent effects of the insecticide Thiamethoxam 350 FS, on physiological quality of maize hybrid seeds. Fifteen high quality hybrids of Monsanto company were utilized, studied through three variables: three rates of the insecticide Thiamethoxam as follow : 0, 0.7 and 1.05 mg of active ingredient/60,000 maize seeds; five storage periods (0, 3, 6, 9 e 12 months) e two storage types (15oC and without temperature control). The three parameters of evaluation were: germination, cold test and field emergence, all of them conducted in the Aprosmat Seed Testing Laboratory. The data were discussed based on statistical analysis about the isolated effect of the product Thiamethoxam and the ambient/storage interaction in which were obtained the following conclusions: 1 The maize seed can be treated with Thiamethoxam and remain stored for a period of one year under climatized environment; 2 An overrate of 50% above the recommendation does not affect the field emergence of the maize seeds; 3 Maize seed on a conventional environment without temperature and moisture control maintain their quality until six months of storage.; 4 High physiological quality of maize seeds can be stored for about 1 year on an environment with temperature below 20oC. / O objetivo do presente trabalho foi verificar o possível efeito imediato e latente do inseticida Tiametoxam 350 FS sobre a qualidade fisiológica de sementes de milho híbrido. Utilizaram-se 15 híbridos da empresa Monsanto, sendo que as variáveis foram: três doses do inseticida 0, 0,7 e 1,05mg./60.000 sementes; cinco períodos de armazenamento (0, 3, 6, 9 e 12 meses) e dois tipos de armazenamento (15oC e umidade relativa de 60% e sem controle de temperatura). Os parâmetros de avaliação foram: germinação, teste de frio e emergência em campo, conduzidos do laboratório de sementes da Aprosmat. Os dados foram discutidos conforme análise estatística sobre o efeito isolado do produto Tiametoxam e a interação ambiente/armazenamento no qual se obtiveram as seguintes conclusões: 1 As sementes de milho podem ser tratadas com Tiametoxam e armazenadas até um ano em ambiente climatizado.; 2 A emergência em campo não é afetada pelo tratamento de sementes de milho com o inseticida Tiametoxam mesmo em dosagem 50% acima da recomendada; 3 Sementes de milho tratadas com Tiametoxam, mantêm sua qualidade fisiológica por até seis meses de armazenamento em ambiente convencional;

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