Antibiotic Uptake Reducing Effect of Zeolite and Shell Meal Fertilizer Amendment for Lettuce (Lactuca sativa L.) Cultivation Fertilized with Chicken Manure Compost

The veterinary antibiotics treated to livestock have a potential risk to reach to soil and water environment, andeventually be taken up by plants. The objective of the study was to investigate the effect of zeolite and shellmeal fertilizer amendment on antibiotic uptake by plant when veterinary antibiotics in chicken manurecompost were applied to agricultural land. Model antibiotics used in the study were chlortetracycline (CTC),tylosin (TYL), and sulfamethazine (SMT). Chlortetracycline level in lettuce was decreased to less than 0.08ug kg-1 by application of zeolite as compared with about 0.26 ug kg-1 for control without amendment on 33days after transplanting. Tylosin was not detected for all the treatment. Sulfamethazine levels in lettuce rangedfrom 11 to 19 μg kg-1 on a fresh weight basis and gradually decreased with time. Zeolite application decreasedthe SMT levels in lettuce by greater extent than shell meal fertilizer amendments. Results from the 61-dgreenhouse experiment imply that application of zeolite at a rate of 1.5 Mg ha-1 or shell meal fertilizer at a rateof 2.0 Mg ha-1 can reduce CTC and SMT concentration in lettuce cultivated in soil fertilized with antibioticcontaminatedchicken manure compost. KCI Citation Count: 1