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Potato (Solanum tuberosum L.) and Sulla (Hedysarum coronarium L.) Intercropping in Tunisia: Effects in Water Consumption and Water Use Efficiency

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  • Mourad Rezig
  • Ali Sahli
  • Faycel Ben jeddi
  • Youssef Harbaoui

Abstract

This experiment was carried out at the Technical Center of Potato (C.T.P) situated in the low valley of Medjerda river at Tunisia, during two growing seasons (2006-2007) and (2008-2009). It aims at evaluating the effect of intercropping potato (Solanum tuberosum cv. Spunta) and sulla (Hedysarum coronarium L. cv. Bikra 21) grown under 1-1 intercropping row arrangement and sole cropping on water consumption and water use efficiency of one potato variety and one sulla variety. In addition, land equivalent ratio (LER) was determined to assess the efficiency of the intercropping system. Intercropping had no significant effect on the above parameters and tuber dry biomass production of potato and sulla. However, it increased the total dry biomass of the intercropping system. This increase occurred during the two cultivating seasons of 2007 and 2009 respectively from 12.5 to 14.8% compared to the potato in sole cropping. Intercropping has led to a similar reduction of water consumption (WC) of both crops. This reduction was 36 and 28% for 2007 and 2009 seasons respectively and for both crops. However, intercropping has led to an increase in the overall (WC) of the mixed system by 9.1 and 13.8% in 2007 and 2009 respectively. Water Use Efficiency (WUE) has been improved from 35.4 to 45.6% for potato in sole intercropping and from 25 to 37.5% for sulla intercropped. The values of total LER were higher than one, which indicates the superiority of intercropping system over the sole cropping system.

Suggested Citation

  • Mourad Rezig & Ali Sahli & Faycel Ben jeddi & Youssef Harbaoui, 2013. "Potato (Solanum tuberosum L.) and Sulla (Hedysarum coronarium L.) Intercropping in Tunisia: Effects in Water Consumption and Water Use Efficiency," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 5(10), pages 123-123, September.
    • Handle: RePEc:ibn:jasjnl:v:5:y:2013:i:10:p:123
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    References listed on IDEAS

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    1. Yactayo, Wendy & Ramírez, David A. & Gutiérrez, Raymundo & Mares, Víctor & Posadas, Adolfo & Quiroz, Roberto, 2013. "Effect of partial root-zone drying irrigation timing on potato tuber yield and water use efficiency," Agricultural Water Management, Elsevier, vol. 123(C), pages 65-70.
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    Cited by:

    1. Mourad Rezig & Hatem Cheikh M'hamed & Mbarek Ben Naceur, 2015. "Durum Wheat (Triticum durum Desf): Relation between Photosynthetically Active Radiation Intercepted and Water Consumption under Different Nitrogen Rates," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 7(8), pages 225-225, July.

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    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
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