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Dry-matter production, and nutrient uptake and removal bySolanum andigena in the Peruvian Andes

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Abstract

A Field experiment withSolanum andigena (cv. Renacimiento) at three levels of fertilization was conducted in the Mantaro Valley (Central Sierra) of Peru during the 1967–68 growing season. Dry matter and nutrient accumulation in tops and tubers of Renacimiento potatoes were determined at 3-week intervals between 72 and 172 days after planting (42 and 142 days after emergence).

Tuber initiation took place during the interval 116–137 days after planting, and top growth reached its maximum shortly thereafter. Total growth rates of 200 kg/ha/day4 (178 lb/a/day) where estimated under medium and high fertilization, and tuber dry matter accounted for 70–75% of the total dry matter produced.

Final tuber yields (fresh, 21% dry matter) ranged from 10m.t./ha (89 cwt/a) without fertilizer to 41 m.t/ha (366 cwt/a) when fertilized with 160 kg each of N, P2O5 and K2O/ha (143 lb/a).

Under high fertilization, total N, P, and K accumulation was estimated at 141, 19, and 403 kg/ha (126, 17 and 359 lb/a), respectively, with 77 kg (68 lb/a) of N, 14 kg (12 lb/a) of P, and 224 kg (200lb/a) of K being removed in the tubers.

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Authors and Affiliations

  1. Dept. of Soil Science, North Carolina State University, 27607, Raleigh, North Carolina

    R. E. McCollum (Assoc. Professor)

Authors
  1. F. N. Ezeta
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  2. R. E. McCollum
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Additional information

Published with the approval of the Director of the North Carolina Agricultural Experiment Station as Paper No. 3460 of the Journal Series.

Part of a thesis submitted to the Universidad Agraria, Lima, Peru, by the senior author. This work was supported in part by the Peruvian Ministry of Agriculture and North Carolina Contract with the Agency for International Development.

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Ezeta, F.N., McCollum, R.E. Dry-matter production, and nutrient uptake and removal bySolanum andigena in the Peruvian Andes. American Potato Journal 49, 151–163 (1972). https://doi.org/10.1007/BF02861595

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  • DOI: https://doi.org/10.1007/BF02861595

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