Sweet corn responses to basal and top-dressed rates and sources of nitrogenous fertilizers [maize]
1992
Salardini, A.A. | Holloway, R.J. (Tasmanian Dept. of Primary Industry, Devonport (Australia). Vegetables and Allied Crops Branch) | Sparrow, L.A. (Tasmanian Dept. of Primary Industry, Kings Meadows (Australia). Land Management and Chemistry Branch)
In field trials, the highest yield of both cobs (23.1 t per ha) and fresh shoots (93.8 t per ha) and the highest concentration of N in cobs and shoot dry matter was attained with 100 kg basal N per ha and 2 subsequent top-dressings of 50 kg N per ha each, applied as ammonium sulfate. From banded dressings alone, 150 kg N per ha produced the highest cob yield and the highest accumulation of N in cobs and shoot dry matter. Top-dressed N increased the yield of cobs and the yield and N concentration in shoots, but did not influence the N concentration in cobs. The source of N did not have any effect on the yield or most yield-related components except yield and number of tertiary cobs, which were higher in the ammonium sulfate treatments.
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