Storage fungi of cabbage and their control

Short-term, parallel storage in the prediction of storage losses caused by Botrytis cinerea Pers ex Fr. on cabbage

“…However, in this case a microscope is needed for identifying the fungus. These results support the earlier study (TAHVONEN 1981) that the B. cinerea content remains fairly constant throughout the whole storage period, i.e. there is no appereciable spread of the fungus from infected to healthy cabbages during the storage period.…”

“…The storage losses for cabbages with a B. cinerea content of 90 % were already 0.34 %/day during a storage period of 6.5 months. As the damage caused by the fungus in the main does not develop until after 4 months storage (TAHVONEN 1981), the information provided by parallel storage about the storagability of the cabbage crop can be easily utilized when deciding the best time for marketing the cabbages. One disadvantage in this study was that no observations were obtained about B. cinerea contents over the range 40-80 %, which would have been essential for determining the more important damage threshold values.…”

“…As it is a fast-growing fungus it can spread from infected plants to most of the cabbages within 5-7 weeks at s-lo°C. R. solani is also known to be a storage pathogen (WELLMAN 1932, WALKER et al 1958, ADAIR 1971, but is of no significance in refrigerated stores (TAHVONEN 1981).…”

“…4 of the sacks were stored for 6.5 months at +1°C, 2 sacks for 1.5, 2.5 and 3.5 months at +1°C and 2 sacks for 3, 5 och 7 weeks at +s-+ 10°C. The cabbages stored for the longest period of time (6.5 months) were prepared for marketing and their B. cinerea contents determined (TAHVONEN 1981). Only the B. cinerea-% was determined on the other cabbage lots.…”

“…In Finnish conditions, B. cinerea already infects the cabbages in the field during the growing season. The pathogen does not spread to any significant extent during storage (TAHVONEN 1981).…”