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Notes: Growth and Nutrient Requirements in a Teak Plantation Age Series in Nigeria. II. Nutrient Accumulation and Minimum Annual Requirements

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Samples of 40 trees chosen to represent the age and diameter range during the first 15 years of growth of some quality I teak(Tectona grandis L. f.) plantations were analysed for N, P, K, Ca, and Mg. Both accumulation and annual requirements of these nutrients by the aboveground biomass increased throughout the period. After 15 years of growth, the stand whose dry weight was about 592 mt/ha contained about 2,980 kg of K, 2,228 kg of Ca, 1,788 kg of N, 447 kg of P, and 377 kg of Mg per hectare. The minimum annual nutrient requirements at the same age were estimated as 556 kg of K, 328 kg of N, 357 kg of Ca, 76 kg of P, and 62 kg of Mg per hectare. The distribution of all the elements followed a similar trend and varied with stand age. Proportion channelled to foliage decreased while those to trunk and branches increased with age. The silvicultural implications of this differential distribution and the degree of harvest on site nutrient budgets are discussed. Forest Sci. 30:35-40.
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Keywords: Tectona grandis

Document Type: Miscellaneous

Affiliations: Reader (Silviculture), Department of Forest Resources Management, University of Ibadan, Ibadan, Nigeria

Publication date: 1984-03-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
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