Effects of fertilisers on the yield of potatoes in S.E. Scotland

K. Simpson*, P. Crooks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A series of field experiments was made on maincrop potatoes grown for seed with farmyard manure. The optimum rates of application of ammonium sulphate, superphosphate and potassium chloride were considerably lower than those at present practised in the area. Use of 120 lb. of N per acre, consistently depressed yield of both ware and seed. Moderate applications of superphosphate (60 lb. of P2O5 per acre) increased seed yield generally but had little effect with soils high in easily soluble phosphorus. Potassium chloride increased the ware/seed ratio considerably. Interactions between the effects of the fertilisers on yield were very small.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalJournal of the Science of Food and Agriculture
Issue number2
Publication statusPrint publication - Feb 1961


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