By the 1930s , when dairy production peaked , it had emerged as the second largest primary industry in Queensland accounting for 20 % of primary production .
Following World War I , dairying in Queensland entered a boom period .
By the 1930s , when dairy production peaked , Queensland had emerged as the second largest primary industry in Queensland accounting for 20 % of primary production .
Following World War I , dairying in Queensland entered a boom period .