Summary
Preplant soil solarisation and mouldboard ploughing to a depth of 30 and 60 cm respectively were evaluated in two field experiments for the control ofColletotrichum coccodes causing black dot of potato. Solarisation reduced disease incidence by 45% when tarping was done for eight weeks and temperatures reached 56°C in the top 5 cm of soil. With a six week tarping period and lower maximum temperature (50°C) the reduction in disease was a nori-significant 25%. Mouldboard ploughing to a depth of 30 cm reduced black dot by 34% and was twice as effective as ploughing to a depth of 60 cm.
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Denner, F.D.N., Millard, C.P. & Wehner, F.C. Effect of soil solarisation and mouldboard ploughing on black dot of potato, caused byColletotrichum coccodes . Potato Res 43, 195–201 (2000). https://doi.org/10.1007/BF02358079
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DOI: https://doi.org/10.1007/BF02358079