Browsing by Author "Rosenquist, E.A."
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Item A coconut fertiliser trial on the podsolic soils of North Sumatra(2007) Rosenquist, E.A.Coconut seednuts of the MAWA hybrid were imported to North Sumatra and planted on podsolic soils in October 1974. A factorial fertiliser trial was started in March 1977. By December 1978 no response had been obtained to phosphate and little response had been obtained to nitrogen, probably because the legume cover received rock phosphate applications and was effectively contributing nitrogen. Muriate of potash increased growth as measured by the petiole cross section and also various yield components. The positive response may be due to the potash or the chlorine. All fertilisers reduced frond boron levels and at high rates of fertiliser application boron deficiency may be a limiting factor.