Abstract:
Magnesium at 0, 25, 50 and 75 kg Mg0 ha-1 year-1 and nitrogen at 0, 75, 150 and 225 kg N ha-1 year-1 were applied in factorial combination to moribund seedling tea planted in 1926.
Yield results for 18 months (January 1984 to June 1985) did not show overall significant differences between treatments.
Soil and leaf analysis data, on the other hand, showed significant differences between treatments.
Increasing the levels of nitrogen in the absence of magnesium was found to depress the soil extractable magnesium content.
The soil extractable magnesium content was found to be positively correlated with the young shoot magnesium content, at the highest rate of nitrogen fertilizer.
Similarly, the young shoot magnesium content was positively correlated with the young shoot nitrogen content at the highest level of nitrogen fertilizer.
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