Degradation of the herbicides molecules in soil under different temperaturesJournal: Agrarian Academic Journal / Revista Agraria Academica (Vol.2, No. 2)
Publication Date: 2019-03-01
Authors : Viviane Wruck Trovato; Rômulo Penna Scorza Júnior;
Page : 105-117
Keywords : Ametryn; hexazinone; diurom; persistence in soil;
The objective of this work was to evaluate the effect of different temperatures on the degradation of ametryn, hexazinone and diuron molecules in a typical Dystroferric Red Latosol incubated at 25, 35, 40 and 45°C, with soil moisture of5 70% of field capacity. Diuron and hexazinone herbicides were more persistent under warmer temperature conditions (25°C). On the other hand, ametryn showed higher persistence in the soil at higher temperature (45°C) conditions. The half-life values for the three herbicides at different temperatures ranged from 24 to 77 days for ametryn, 30 to 77 days for hexazinone and 32 to 99 days for diuron.
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