Control of fusarium foot and root rot of tomato by soil amendment with lettuce residues

Allelopathic mechanisms and their exploitation for biological control

“…conglutinans than solarization without the cabbage residues (25). Other studies (9) showed that using lettuce as a catch crop between successive spring tomato crops in the greenhouse, and incorporating the remaining lettuce residues into the soil, controlled the foot and root rot disease of tomato caused by Fusarium oxysporum f.sp. radicis-lycopersici.…”

Management of root rot diseases of peas, beans, and tomatoes

“…Field planting should be delayed as late as possible in a field that is known to have FORL infestation. The use of green manure crops to enhance the population of FORL antagonists has been investigated (19). Among several green manure crops tested, lettuce and dandelion were effective.…”

“…In particular, lettuce reduced the disease to nil or trace levels. The mode of action of lettuce remains unknown though its effect may be an allelopathic one (19).…”

Fusarium crown and root rot of tomatoes in the UK

“…Although the disease has not >et devastated UK rockwool tomato crops, it is a serious concern to growers and effective controls need to be developed, FCRR-resistant cultivars of indeterminate glasshouse tomatoes of the pink 'beefsteak" type are available (Scott & Farley 1981Berry & Oakes, 1987) but resistant globose, red-fruited tomato cultivars suitable for the UK market are still being developed. Chemical control of FCRR in steam-sterilized soil by using a captafol drench proved effective in preventing reinfestation of soil by airborne FORL conidia (Rowe & Farlcv, 1981), Other candidate fungicides proved to be phytotoxic at levels needed to control FCRR (Jarvis, 1988), Lettuce residue soil amendments and lettuce intercropping were considered for biological control (Jarvis & Thorpe. 1981 Trichoderma harzianum was used to control FCRR in the field (Sivan et ai, 1987) and in rockwool-grown glasshouse tomatoes (\an Steekelenburg & van der Sar, 1988b) Cross-protection by saprophytic Pusarium oxysporum strains (Louter & Edgington, 1985;Copeman et at., 1988) has reduced disease and improved yields, A thorough review of FCRR has recently been published (Jarvis, 1988),…”