Upper left-No oversowing. Note poor sward through lack of clovers despite five annual applications of serpentine superphosphate at 3cwt. per acre. Upper right—The result of oversowing with Lotus major seed at 1lb. per acre and the application of serpentine superphosphate at 1cwt. per acre for 5 consecutive years. Lower left-Strong growth of Tallarook clover sown at 3lb. per acre with five annual applications of 1cwt. of serpentine superphosphate per acre. The lime requirement of this soil was 1 ton and there was a very low phosphate level. Lower right—An excellent sward of Kentish white clover oversown at 2lb. per acre and treated with an initial dressing of 1 ton of lime per acre, followed by five annual applications of 1 cwt. of serpentine superphosphate per acre.

New Zealand Journal of Agriculture, Volume 87, Issue 3, 15 September 1953, Page 243

Upper left-No oversowing. Note poor sward through lack of clovers despite five annual applications of serpentine superphosphate at 3cwt. per acre. Upper right—The result of oversowing with Lotus major seed at 1lb. per acre and the application of serpentine superphosphate at 1cwt. per acre for 5 consecutive years. Lower left-Strong growth of Tallarook clover sown at 3lb. per acre with five annual applications of 1cwt. of serpentine superphosphate per acre. The lime requirement of this soil was 1 ton and there was a very low phosphate level. Lower right—An excellent sward of Kentish white clover oversown at 2lb. per acre and treated with an initial dressing of 1 ton of lime per acre, followed by five annual applications of 1 cwt. of serpentine superphosphate per acre.