John McIlroy has suggested that there is a distinction between a "blackleg" and a "scab". Will look at the blackleg miner. It is a plant pathogen causing blackleg of potato. The lockout largely collapsed as a result of "blackleg" labour. Cattle might catch and develop various other diseases, like blackleg, bluetongue, foot rot too. The variety has an average resistance to powdery scab and blackleg. Other diseases blackleg and bovine viral diarrhoea, that have caused several deaths in captivity. In 1914 he was involved in a stoppage against blackleg working at the arsenal. Scurvy, known as "blackleg" during this period, became a major problem. Increasing application of nitrogen or complete fertilizers have shown reduced incidence of blackleg stem infection. Young plants affected by blackleg are particularly susceptible, typically dying after a halt in development. "Leptosphaeria maculans" causes phoma stem canker or blackleg. Blackleg of potato has been successfully managed primarily using cultural techniques. Blackleg train drivers were brought over from England, after drivers refused to carry British troops. Blackleg is caused by infection with Clostridium bacteria.