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Summa Phytopathologica

Print version ISSN 0100-5405

Abstract

CASA, Ricardo Trezzi et al. Interaction between soil temperature, depths of sowing and seed treatment with fungicide in the emergence of maize plants. Summa phytopathol. [online]. 2012, vol.38, n.1, pp. 90-92. ISSN 0100-5405.  http://dx.doi.org/10.1590/S0100-54052012000100016.

In this study the interaction between soil temperatures (13ºC, 15ºC, 17ºC and 19ºC), depths of sowing (2.5, 5.0 and 7.5 cm) and seed treatment with fungicide (captan + thiabendazol) in the emergence of plants maize was evaluate. Seed of hybrid corn AS1565 with 22% of the incidence of Fusarium verticillioides was used and soil naturally infested. The trays were kept in conditioned chambers for 25 days, measured daily the emergence. There was significance difference between treated and untreated seeds. According to lower soil temperature and higher the depth of seedling, was largest the response of the seed treatment in the plants emergence. The emergence of plants was measured daily to obtain the stability, which occurred at 23, 18, 12 and 12 days after seedling at temperatures of 13ºC, 15ºC, 17ºC and 19ºC respectively, showing reduction in the emergence speed at low temperatures.

Keywords : chemical control; Fusarium verticillioides; plants emergence.

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