Left Some of the plots on the sulphur trial on the property of Mr. W. G. Spite, Alma. The plot in the left foreground received sodium thiosulphate at the rate of 100lb. per acre and that in the right foreground, which showed, no response, molybdenum at 2½oz. per acre. On the plot behind the sodium thiosulphate plot sulphur was applied at the rate of 28lb. per acre, and behind the molybdenum plot another plot received sulphur at the rate of 112lb. per acre. The photograph was taken 18 months after treatment. There is a good response in this trial to 2cwt. of superphosphate per acre, but not to 2cwt. of oxalic phosphate or I cwt. of double superphosphate forms which contain no sulphur. Responses were also obtained from plots on which per acre dressings of 28lb. and 56lb. of the sulphates of copper, magnesium, manganese, and iron were applied.

New Zealand Journal of Agriculture, Volume 89, Issue 5, 15 November 1954, Page 436

Left Some of the plots on the sulphur trial on the property of Mr. W. G. Spite, Alma. The plot in the left foreground received sodium thiosulphate at the rate of 100lb. per acre and that in the right foreground, which showed, no response, molybdenum at 2½oz. per acre. On the plot behind the sodium thiosulphate plot sulphur was applied at the rate of 28lb. per acre, and behind the molybdenum plot another plot received sulphur at the rate of 112lb. per acre. The photograph was taken 18 months after treatment. There is a good response in this trial to 2cwt. of superphosphate per acre, but not to 2cwt. of oxalic phosphate or I cwt. of double superphosphate forms which contain no sulphur. Responses were also obtained from plots on which per acre dressings of 28lb. and 56lb. of the sulphates of copper, magnesium, manganese, and iron were applied.