Soils and Agricultural Chemistry Section Annual Report 1977

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Date
1977
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Ministry of Agriculture
Abstract
The number of samples analysed consisted of the following: Soils 7,451, plant materials 2,500, feedstuffs 309, fertilisers and manures 161 and water samples 75, a total of 10,496 reflecting an increase of 1567 samples over 1976. In soil fertility trials at N.A.L. and Kisii, the highest maize yields were obtained from high rates of N and P or from combinations of manure and fertilisers while at Embu highe8t yields were obtained from low rates of manure and fertilizer combined. At Katumani, fertilisers (N & P) were the most effective. The productivity of I1Bracken Zone ll soils was greatly improved through liming, phosphate and manure application, the latter two being very effective. The soil pH, available cations and phosphorus, organic carbon and nitrogen contents were improved.
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