Figure 1. The influence of volatiles on growth of Fusarium oxysporum f.sp. dianthi. Growth is shown in cm, discounting the 7 mm circular plug used to inoculate plates. Missing bars signify zero growth.
Figure 2. Photos illustrating the set up of the microplot experiment. Figure on the left shows the completed plots, with pots buried and most pots covered with clear plastic tarps. Figure on the right shows the uppermost (5 cm) layer of sachets just before covering. Flags and strings mark the locations of sachets buried deeper in the pots (15 cm or 30 cm).
Figure 3. The survival of citrus nematode at different depths and at different times as influenced by microplot treatments. Vertical bars indicate +/- 1 SD.
Figure 4. Weed germination (%) after removal at 2, 4 or 6 weeks of treatment in buried pot experiments. All treatments were covered with 1.1 mil polyethylene tarp except the untreated-uncovered control and the broccoli/35T/15cm/UT treatment.
Figure 5. Temperature profile (OC) of soil at 5 cm depth in Davis when covered with one layer of clear polyethylene (1.1 mil) during July.
Figure 6. Control of Fusarium oxysporum f.sp. dianthi at various depths in field beds six weeks after incorporation of broccoli residues at 5 or 15 cm and covering with clear polyethylene tarps.
Figure 7. Control of weed species in field beds six weeks after incorporation of broccoli residues at 5 or 15 cm and covering with clear polyethylene tarps.
Figure 8. Growth response of snapdragon and goditia following transplant of seedlings into beds that had been treated earlier with the incorporation of broccoli residues and tarping (see figures 6 and 7).
Figure 9. Temperature profile (OC) of soil at 5 cm depth in Watsonville (Monterey Bay Academy) when covered with one layer of clear polyethylene (1.1 mil) during September.
Figure 10. Control of Fusarium oxysporum f.sp. dianthi at various depths in field beds six weeks after application of various organic amendments, chemical treatment, or solarization with clear polyethylene tarps.
Figure 11. Calla lily rhizome control with metam sodium plus tarping (A) and broccoli tissue (35 T/A) plus tarping (B) for six weeks. Note the large calla lily populations in the upper left corner of each photograph, which reflect growth following less effective treatments.
Figure 12. Control of Fusarium oxysporum f.sp. dianthi at various depths in field beds six weeks after incorporation of various Brassicaceae tissues. Figure A is the nontarped treatment, and Figure B is the tarped treatment. Most of the 5 cm samples in the untarped treatment and two in the tarped treatment were lost to rodent pests.
