Post by annie on Sept 20, 2010 9:21:09 GMT -5
This link describes some of the Early Blight and nematode resistance benefits of intercropping resistant tomatoes with susceptible ones.
eidr.wvu.edu/eidr/documentdata.eIDR?documentid=2592
Here is the Abstract or Summary information;
The objective of this research was to determine if disease on susceptible tomato cultivars is reduced by intercropping with resistant cultivars. A second objective was to investigate the mechanism of the disease reduction observed. Early blight (caused by Alternaria solani) rate of disease increase and lesion expansion were lower on susceptible tomato cv. ‘Brandywine’ when intercropped with resistant cv. ‘Juliet’ than with 'Brandywine' monoculture in both the field and greenhouse. Yield from ‘Brandywine’ plants was 17.3% greater when intercropped with ‘Juliet’ than when grown in monoculture. Reduction in lesion expansion on ‘Brandywine’ when intercropped with ‘Juliet’ suggests an interaction initiating a defense response in ‘Brandywine’.... A reduction in the spread of the parasitic nematode Meloidogyne incognita to 'Brandywine' when interplanted with root knot disease resistant cultivar 'Celebrity' was observed in the greenhouse. Results suggest that intercropping with resistant cultivars is effective in reducing diseases on susceptible cultivars caused by diverse pathogens. The main mechanism of disease reduction is attributed to reduced susceptible leaf material in the plot, however the potential for induced resistance in 'Brandywine' is discussed.
eidr.wvu.edu/eidr/documentdata.eIDR?documentid=2592
Here is the Abstract or Summary information;
The objective of this research was to determine if disease on susceptible tomato cultivars is reduced by intercropping with resistant cultivars. A second objective was to investigate the mechanism of the disease reduction observed. Early blight (caused by Alternaria solani) rate of disease increase and lesion expansion were lower on susceptible tomato cv. ‘Brandywine’ when intercropped with resistant cv. ‘Juliet’ than with 'Brandywine' monoculture in both the field and greenhouse. Yield from ‘Brandywine’ plants was 17.3% greater when intercropped with ‘Juliet’ than when grown in monoculture. Reduction in lesion expansion on ‘Brandywine’ when intercropped with ‘Juliet’ suggests an interaction initiating a defense response in ‘Brandywine’.... A reduction in the spread of the parasitic nematode Meloidogyne incognita to 'Brandywine' when interplanted with root knot disease resistant cultivar 'Celebrity' was observed in the greenhouse. Results suggest that intercropping with resistant cultivars is effective in reducing diseases on susceptible cultivars caused by diverse pathogens. The main mechanism of disease reduction is attributed to reduced susceptible leaf material in the plot, however the potential for induced resistance in 'Brandywine' is discussed.