"Pesticide residues" have long been considered a global "health crisis." Scientists around the world have been tirelessly searching for an effective solution. Recently, a reporter learned from the College of Life Sciences at Nanjing Agricultural University that after 16 years of dedicated research, the university has successfully developed the "Pesticide Residue Microbial Degradation Technology," effectively tackling this persistent issue.
Natural degradation of pesticides is extremely slow, often taking up to 48 years. In contrast, the new microbial degradation technology uses high-efficiency bacteria isolated and screened through advanced biotechnology. These microbes are then cultivated using fermentation techniques to create eco-friendly microbial agents that can be directly applied to farmland. This innovative approach helps produce pesticide-free, green agricultural products. The technology has received support from major national programs, including the 863 Program, National Science and Technology Research Projects, and the National Natural Science Foundation, and it was awarded the "Second Prize for National Scientific and Technological Progress in 2005."
According to Professor Li Shunpeng, the lead researcher and doctoral supervisor at the College of Life Sciences, natural degradation is too slow. However, with their technology, applying the microbial agent just two days after pesticide use can degrade the residue within 5–7 days. The cost is only about 10 yuan per mu, making it both efficient and affordable. Not only does it maintain the effectiveness of the pesticide, but it also eliminates the risk of residue contamination.
Professor Li frequently receives calls from farmers across the country seeking help. One such case involved a tea plantation in Quanzhou, Fujian Province, where the tea was found to have excessive pesticide residues. Thanks to the microbial degradation technology developed by Nanjing Agricultural University, the problem was resolved. The lab behind the university houses over 500 highly effective microbial strains capable of degrading various types of pesticides.
Quanzhou is the largest oolong tea production area in China, and while tea production has soared, exports have faced technical barriers due to pesticide residues. After learning about the university's breakthrough, Anxi County’s Agriculture and Tea Bureau reached out for field trials. The results were impressive—after applying the microbial agents, pesticide levels in tea samples from Quanzhou, Xiamen, and Fuzhou were nearly undetectable.
These microscopic organisms, though invisible to the naked eye, have created significant economic value for sustainable agriculture. Over the past six years, the technology has been applied to more than 3 million mu of farmland, generating over 500 million yuan in additional income for farmers with an initial investment of 60 million yuan.
The Ministry of Agriculture’s Key Microbiology Laboratory at Nanjing Agricultural University houses the world’s largest collection of over 500 microbial strains, making it a leading center in the fight against pesticide pollution.
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