Effect of antibacterial veterinary drugs on growth of kidney bean, barley and radish and their accumulation in plants
1999
Aruksaar, A. | Puessa, T. | Kuldkepp, P. | Ivask, M. (Estonian Agricultural Univ., Tartu (Estonia))
The main results are as follows: in most cases the antibacterial drug depressed the growth of plants - sulfadimethoxin being the most potent one. In case of kidney bean ciprofloxacin showed several interesting effects: The total weight as well as the average wet weight of one plant were somewhat higher than in the control soil; The raise of microbial esterase activity, soluble P and K concentrations as well as the content of organic matter were highest in the presence of ciprofloxacin. In case of bean the esterase activities have positive correlation with the potassium concentration in the soil. Ciprofloxacin caused development of albinosis in the older parts of bean and wheat plants and oxytetracycline development of chlorosis in the older parts of bean plants. The effect of antibacterial drugs on the total microbial mass was low. The non-standardized microbiological test revealed accumulation of ciprofloxacin in the roots of all plants studied and tetracyclin in part of cases. Ciprofloxacin was found also in the shoots of radish grown on peat, with the inhibition zone width 13 and 12 mm in case of drug nominal concentrations in soil of 50 and 100 mg/kg, respectively
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