THE EFFECT OF POTASSIUM AND PHOSPHORUS FERTILISER ON TOMATOES PROPAGATED IN PEAT
The effects of potassium and phosphorus fertilisers on the growth of tomatoes in moss peat were studied over three years. Additions of sulphate of potash ranged from 0 to 200 g per bushel and superphosphate from 0 to 150 g in two factorial trials. Studies included both early and autumn tomato propagation. Additional superphosphate or sulphate of potash reduced the fresh and dry weight of early plants in January in two years but not in February. Sulphate of potash or superphosphate had no effect on fresh weight, dry weight or flower number in autumn tomatoes. Sulphate of potash had no effect on flower number in any year, but additional phosphate increased flower number on the first truss in one year. Satisfactory early and autumn plants were obtained by adding 25 and 50 g sulphate of potash per bushel and 50 and 100 g superphosphate. The effects of fertiliser treatment on the nutrient content of plants and peat are given.
WOODS, M.J., O'HARE, J.J. and NOLAN, C.G. (1968). THE EFFECT OF POTASSIUM AND PHOSPHORUS FERTILISER ON TOMATOES PROPAGATED IN PEAT. Acta Hortic. 8, 13-22