Nitrogen Studies in a Coffee Soil

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Date
1961
Authors
Robinson, J.B. D.
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Abstract
This trial was laid down to compare ammonium sulphate and urea (92 lb. nitrogen per acre per annum) applied in a single or in split applications annually during the Long Rains, plus or minus the presence of a complete Napier grass (Pennietum purpureum K. Schum) mulch cover. The comparison was measured essentially in terms of growth and leaf nitrogen levels and the plots consisted of single trees only. A plot size of a single mature tree is generally madequate to define statistical yield differences between treatments precisely. Furthermore, there were no guard row trees between treatments and it is assumed here that there was no interference between treatments because of this. The crop yields were recorded,
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East African Agricultural and Forestry Journal, 56, pp. 61-64
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