Analysis of sodium 4- chlorophenxyacetate on mung bean sprouts growth and residue

The effect of different doses of sodium 4- chorophenxyacetate treatments on mung bean sprouts growth and residues were studied through the evaluation of the two cultivation methods.Mung bean sprouts were treated with four different doses of sodium 4- chorophenxyacetate nutrient solution: 0.5,1,2,4 mg / L,and grew in bean sprout machine. The fresh weight,Axis length,Axis diameter,Root length,germination rate and yield were measured after harvest.According to the results,the better cultivation method was chosen and then the dynamic residue of sodium 4- chlorophenxyacetate were determined.The residues of sodium 4- chlorophenxyacetate in thirty- two samples collected from the market were also determined.The results showed that the best yield was 7.12 for1 mg / L group in the method 1.In the method 2,except that the 4 mg / L group showed suppression,the growth of other groups were similar to the control group.In method 1,sodium 4- chlorophenxyacetate was downtrend along with time in each treatment group and no sodium 4- chlorophenxyacetate was detected in the last day.In the thirty- two samples from the market,the contents of sodium 4- chlorophenxyacetate in 3 samples were between1.39 mg / kg to 3.39 mg / kg,and the detection rate was 9.4%.The results suggested that method 1 was better than method 2 from comprehensive consideration.Sodium 4- chlorophenxyacetate could be degraded and eliminated in nurturing process of mung bean sprouts.