Abstract
Effects of solarization on microbial communities in soil were investigated with an incubation experiment and in a greenhouse experiment with isolated bed culture of tomato (Solanum lycopersicum L.) by molecular techniques. Microbial biomass carbon in soil was decreased by about half in the incubation experiment treated with 45°C for 14 days and the greenhouse experiment with solarization for 45 days. Bacterial and fungal communities in soil were affected by the heat and solarization treatments in both the experiments and greatly different from the communities in the unheated soil or the soil before solarization. Copy number of amoA gene of ammonia-oxidizing bacteria in soil was decreased to one-tenth or less by the treatments in both the experiments. This study revealed that the solarization made a great impact on the abundance and composition of microbial communities in soil.
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