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	Provedor de dados Planta Daninha (2) Autor ABBAS,T. (1) CRUZ,C. (1) DELLA VECHIA,J.F. (1) NADEEM,M.A. (1) PERES,L.R.S. (1) TANVEER,A. (1) ZOHAIB,A. (1) Mais... Palavra-chave Growth stimulation (2) Aquatic plants (1) Avena fatua (1) Environmental dynamics (1) Fenoxaprop-P-ethyl (1) Pesticides (1) Phalaris minor (1) Ultra-low doses (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2016 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Hormesis Effect of Herbicides Subdoses on Submerged Macrophytes in Microassay Conditions Planta Daninha PERES,L.R.S.; DELLA VECHIA,J.F.; CRUZ,C.. ABSTRACT: The goal of the study was to evaluate the effect of 2.4-D and clomazone doses on the growth of the submerged macrophytes Egeria densa and E. najas, in microassay conditions. Therefore, tests were conducted in a bioassay room at the temperature of 27.0 ± 2.0 °C, photoperiod of 24 light hours and illumination of 500 lux. The apical fragments (shoot tips) of the macrophytes with 5.0 cm of length were transferred to test tubes with a 100 mL capacity, containing 70 mL of water. The tested concentrations were: 0.1; 1.0; 3.5; 11.2; 36.5; and 118.0 mg L-1 and a control sample with seven replications. In the test with 2.4-D on E. densa, in the control sample treatment and the 0.1 mg L-1 treatment there was shorter length: at 1.0; 3.5; 11.2; 36.5 and 118.0... Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth stimulation; Aquatic plants; Environmental dynamics; Pesticides. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100275 LOW DOSES OF FENOXAPROP-P-ETHYL CAUSE HORMESIS IN LITTLESEED CANARYGRASS AND WILD OAT Planta Daninha ABBAS,T.; NADEEM,M.A.; TANVEER,A.; ZOHAIB,A.. ABSTRACT Hormetic effects of herbicides at ultra-low doses have been proved against range of crop species, although available data of herbicides hormesis about the weeds growth is very limited. This study investigates the promotive effect of low doses of fenoxaprop-Pethyl on growth and seed production of littleseed canarygrass and wild oat. Pot experiments were conducted twice in Wire House at Agronomic Research Area, University of Agriculture, Faisalabad, during 2014-15. Seven different concentrations of fenoxaprop-P-ethyl [0, 1, 3, 6, 9, 12 and 15 g a.i. ha-1] were applied as post emergence herbicide at 3-4 leaves stage of the weeds. Results revealed that increase in growth occurred within first two weeks after spraying at fenoxaprop-P-ethyl doses 1, 3... Tipo: Info:eu-repo/semantics/article Palavras-chave: Avena fatua; Fenoxaprop-P-ethyl; Growth stimulation; Phalaris minor; Ultra-low doses. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300527 Registros recuperados: 2 Primeira ... 1 ... Última

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