Effects of various nitrogen sources on the yield of cassava (Manihot esculenta Crantz)
1973
Ofori, C.S., Soil Research Institute, Kwadaso, Kumasi, (Ghana)
An experiment using three N sources, urea, sulphate of ammonia and sulphur-coated-urea (SeU), was conducted on a sandy-loam soil with a 'six-month' cassava variety as test crop. Nitrogen application significantly increased tuber yield on this soil, but rates beyond 70 kg Njha gave no further significant increase. Sources of N gave no significant yield differences when the nutrient was applied as urea, sulphate of ammonia and SCU.
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