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2.3.10 Trial 11 Field trial: Control of Phytophthora, Pythium and Rhizoctonia in
English spinach with biological and chemical treatments
An infected field plot was selected early in the project to see if control of the above pathogens was
possible. Plots of 1x2 metres were measured, with the 1/2 metre buffers between plots were left to
reduce cross contamination of treatments. Randomised treatments were allocated to certain areas.
There are five treatments and seven replicates (refer to Table A9 below).
Table A9. Treatments applied in on-farm English spinach trial
Treatment Treatment Name Concentration Volume per 1x2m 2
number
added
1 Nil (water) 40 L 5 L
2 Fulzyme TM Plus 80 ml/40 L 5 L
3 Tri- D-25® 120 g/40 L 5 L
4 Fulzyme TM Plus +Tri- D- 80 ml+120 g/40 L 5 L
25®
5 Amistar® WG 12 g/40 L 5 L
2.3.11 Trials 12 and 13 Field trials to assess efficacy of genetic, chemical and
biological controls for clubroot in Chinese cabbage.
Field plots were selected that had previously had clubroot infected leafy Brassica crops. The beds
where segmented into 2 m 2 plots. There are five treatments; each replicated four times using two
Chinese cabbage cultivars (one ‘resistant’ and one ‘susceptible’ to club root). Details of the treatments
are presented in Table A10.
Table A10. Treatments applied in clubroot field trials (12 &13)
Treatment
number
Treatment name Concentration
added
1 Nil (water) Nil 5 L
2 Compost 340 L
3 Hot lime 1 tonne/Hectare 600 g
Volume added
to 2 m 2
4 Agral® 800 ml/40 L (T12)
5 L
80 ml/40 L (T13)
5 Phoscare® 1429 ml/40 L 5 L
The hot lime and compost was added and incorporated into the top layer of soil of the selected plots by
a rotary hoe. Agral® and Phoscare® was drenched over the seedlings, water was used over Nil
controls. The trials were monitored over 45 days.
12