Each team comprises one shearer from each of the four classes - open, senior, intermediate and junior.
Stratford said Southland was prepared to defend it anywhere the region’s shearers were competing in all four grades.
Under the rules, it needs to be at a South Island competition, and challenges must be applied for at least 14 days in advance so that arrangements can be made - including show organisers being able to accommodate a challenge event within their programme.
Stratford said Southland teams will be made up of the best Southland shearers, based on results in the grades, at each event where challenges take place.
Each challenge is shorn as a relay, with the junior member shearing a single sheep, intermediate and senior two each, and open three sheep.
Meanwhile, a nationwide inter-provincial teams competition is set to return to the Golden Shears programme.
The annual meeting of the Shearing Sports New Zealand’s National Committee in August gave the green light for the Golden Shears to go ahead with such an event.
New Golden Shears president Trish Stevens said rules were currently being confirmed.
Teams shearing relays were held in Masterton in the earliest years of the Golden Shears in the 1960s.
However, team competitions at the event have since been limited; mainly to the annual, now-invitation, two-shearers Māori-Pākehā event, the Young Farmers Club (YFC) shearing and woolhandling teams event - which has struggled amid dwindling YFC numbers over recent years - the transtasman shearing and woolhandling tests, and occasional World Championships.
The 2023-2024 shearing sports season, with four of the near-60 competitions already completed, continues at the Hawke’s Bay A and P Show’s Great Raihania Shears shearing and woolhandling championships in Hastings on Friday, and the Northern A and P Show shears in Rangiora on Saturday.