Bacterium malvacearum, the causative agent of ‘black-arm’, or angular leaf-spot disease of the cotton plant, has been described in certain recent papers as capable of producing a systemic ...

As for diseases, the best strategy is to start with disease-resistant cultivars. “Buy ‘fisherman roses,’” Pscheidt said. “The types that you can plant and then go fishing. Breeders are always coming ...