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Short-term watering-distance and symmetry effects on root and shoot growth of bell pepper plantlets

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  • Meiri, Avraham
  • Naftaliev, Boris
  • Shmuel, David
  • Yechezkel, Hana
  • Communar, Gregory
  • Friedman, Shmulik P.

Abstract

Drip lines were located at distances ranging from 0 to 60Â cm from one or both sides of a row of pepper plantlets, and we monitored the effects on their shoot development during 76 days from transplanting to full-size first fruits, on the final root system, and on the areal water and salt distributions in the upper 15-cm soil layer. The experiment was conducted in a greenhouse with a sandy soil, and excess fresh water (1.9Â LÂ d-1 per plant) was applied via short daily irrigations. In addition, the effects of watering distance and symmetry on the potential water uptake rate were analyzed with a coupled-source-sink steady flow and uptake model. Initial faster shoot growth with the one-side system and short distances progressively changed to faster growth with the two-side system and longer watering distances, with the optimum at 30-40Â cm. These temporal changes are attributed to temporal changes in the root uptake of irrigation water: small plants with small root systems benefit from the larger water supply to a smaller soil volume provided by the one-side system, whereas larger plants with greater water needs could extract more irrigation water when they developed larger, split root systems in the two-side irrigation. Balanced root systems and maximal shoot growth can be obtained by starting the irrigation with a line on each side, near the plants, and moving the lines after a short time.

Suggested Citation

  • Meiri, Avraham & Naftaliev, Boris & Shmuel, David & Yechezkel, Hana & Communar, Gregory & Friedman, Shmulik P., 2011. "Short-term watering-distance and symmetry effects on root and shoot growth of bell pepper plantlets," Agricultural Water Management, Elsevier, vol. 98(10), pages 1557-1568, August.
    • Handle: RePEc:eee:agiwat:v:98:y:2011:i:10:p:1557-1568
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    References listed on IDEAS

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    1. Colombo, Alberto & Or, Dani, 2006. "Plant water accessibility function: A design and management tool for trickle irrigation," Agricultural Water Management, Elsevier, vol. 82(1-2), pages 45-62, April.
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    1. Aimé Sévérin Kima & Etienne Kima & Bernard Bacyé & Paule A. W. Ouédraogo & Ousmane Traore & Seydou Traore & Hervé Nandkangré & Wen-Guey Chung & Yu-Min Wang, 2020. "Evaluating Supplementary Water Methodology with Saturated Soil Irrigation for Yield and Water Productivity Improvement in Semi-Arid Rainfed Rice System, Burkina Faso," Sustainability, MDPI, vol. 12(12), pages 1-17, June.

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