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Resultados filtrados por Publicador: Universidade Federal de Pelotas; Biologia; Programa de P??s-Gradua????o em Fisiologia Vegetal; UFPel; BR

Crescimento de plantas de arroz sob aplica????o de herbicidas do grupo das imidazolinonas e sua atividade residual em plantas bioindicadoras; Growth of rice plants under application of herbicides imidazolinone and its residual activity in bioindicators plants

SOUSA, Camila Pinho de
Fonte: Universidade Federal de Pelotas; Biologia; Programa de P??s-Gradua????o em Fisiologia Vegetal; UFPel; BR Publicador: Universidade Federal de Pelotas; Biologia; Programa de P??s-Gradua????o em Fisiologia Vegetal; UFPel; BR
Tipo: Dissertação Formato: application/pdf
POR
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The objective of this research was: a) evaluate the effect of imidazolinone chemical group herbicides on the growth of plants and the injuries to the photosynthetic apparatus of three rice types (varieties) exposed to these and b) evaluate the effect of soil residual herbicides imazethapyr+ imazapic on corn, cucumber, radish and tomato are used as bioindicators. At first experiments we used the herbicide Only?? and Kifix??, using a randomized split plot design in a factorial 5x3 with six replications, with the first factor rates corresponded to 0, 5, 10, 15 and 20 mg p. c. m-2 of commercial product Only?? and 0, 7, 14, 21 and 28 mg p. c. m-2 of commercial product Kifix??, and factor B type of rice (cultivated rice cv. Puit?? Inta CL, red rice ecotype sensitive to herbicides Imidazolinone and red rice ecotype with suspected herbicide tolerance imidazolinone). We evaluated the parameters of chlorophyll a fluorescence, phytotoxicity, plant height and dry mass. Analysis of chlorophyll a fluorescence was performed using a portable fluorometer (HandyPEA, Hanstech). It was concluded that cv. Puit?? Inta CL is tolerant to herbicides Only?? and Kifix?? and can be used in the Clearfield?? system and the red rice ecotype with suspected tolerance was tolerant to both herbicides...