FIG. 1.

HaeIII RFLP analysis of PCR-amplified SSU rRNA gene fragments from bulk soil DNA extracts with Pseudomonas-selective primers. Samples represent five different treatments of the DOK field experiment (lanes BIODYN, BIOORG, CONFYM, CONMIN, and NOFERT) planted with winter wheat (lanes WW) or grass-clover (lanes GC). Bands referred to in the text are identified with arrows and DNA fragment sizes (bp). Underlined fragment size values indicate bands that revealed clear intensity changes across different soils and crops.