The Effect of Temperature of Compost on the Germination Inhibition of Weed Seeds during Livestock Manure Composting
2018
Jeong, K.H., National Institute of Animal Science, RDA, Wanju, Republic of Korea | Kim, K.Y., National Institute of Animal Science, RDA, Wanju, Republic of Korea | Lee, D.J., National Institute of Animal Science, RDA, Wanju, Republic of Korea | Lee, D.H., National Institute of Animal Science, RDA, Wanju, Republic of Korea | Kwag, J.H., National Institute of Animal Science, RDA, Wanju, Republic of Korea
This study was carried out to assess the composting temperature effects on germination of curled dock and barnyard millet seeds. After the seeds wrapped in gauze were buried in the compost heap, the seeds were taken out under monitering the temperature for measuring germination rate at 1.5, 3, 10 and 20 days of composting. The germination rate of the seeds was directly related to the temperature of the compost heap regardless of the type of composting method. The seeds that buried in the compost for 1.5 days at a temperature of 60~70℃ were completely lost their germination ability. However, the germination rate of the seeds retained about 10% even after 20 days when compost temperature was below 51℃ . Reulsting data suggests that, it is necessary to keep the compost temperature at least 55℃ for more than 3 days in order to suppress the germination of the seeds. On the other hand, if the temperature of the compost rises by 60~70℃ , the seeds will lose their gemination ability with in 1.5 days. In conclusion, aerobic composting would be more effective in suppressing germination ability of curled dock seed and barnyard millet seeds.
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