Determination of crop coefficient (Kc) of potato (Solanum tuberosum L .) for Santa Maria, RS , soil-climatic conditions

Authors

  • Alberto Elvino Franke "Universidade Federal de Santa Catarina, Colégio Agrícola de Araquari.
  • Osvaldo Konig "Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Engenharia Rural.

DOI:

https://doi.org/10.1590/S1678-3921.pab1994.v29.4095

Keywords:

irrigation, evapotranspiration, management

Abstract

The crop coefficient (Kc) has been determined for potato (Solanum tuberosum L.), under sprinkler irrigation, as well the total evapotranspiration in the cycle for Santa Maria, RS, soil-climatic conditions. The reference evapotranspiration has been esteemed as from evaporation of the Class A pan and the maximum evapotranspiration through the water balance method. The lower limit of water tension in the soil was 45 kPa, inside of the maximum productivity range. The crop coefficients obtained were: 0,51; 1,43; 1,14; 1,01; and 0,89 in the P2, P3, P4, P5, and P6 subperiod, respectively. It was concluded that the crop coefficient values found resembled with those recommended by the FAO (Doorenbos & Kassan, 1979.

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Published

1994-04-01

How to Cite

Franke, A. E., & Konig, O. (1994). Determination of crop coefficient (Kc) of potato (<i>Solanum tuberosum</i> L .) for Santa Maria, RS , soil-climatic conditions. Pesquisa Agropecuaria Brasileira, 29(4), 625–630. https://doi.org/10.1590/S1678-3921.pab1994.v29.4095

Issue

v.29, n.4, abr. 1994

Section

IRRIGATION AND DRAINAGE