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Water management for indigenous vegetables production in southwestern Nigeria

Water management for indigenous vegetables production in southwestern Nigeria. Project Number 106511 Location of Study: Nigeria. PRESENTED BY OYEDELE D.J. Department of Soil Science & Land Resources Management Obafemi Awolowo University, Ile Ife, Nigeria.

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Water management for indigenous vegetables production in southwestern Nigeria

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  1. Water management for indigenous vegetables production in southwestern Nigeria Project Number 106511 Location of Study: Nigeria PRESENTED BY OYEDELE D.J. Department of Soil Science & Land Resources Management ObafemiAwolowo University, Ile Ife, Nigeria

  2. To evaluate the water requirements of indigenous vegetables • To determine the water use efficiencies of indigenous vegetables in response to rates of Urea-N application • WHY THIS PRESENTATION?

  3. INTRODUCTION • Water is a basic essential for crops. It is required for all the growth stages of crops. • Vegetable production is more profitable during the dry season. • Challenges of dry season production – porous sandy soils, high evaporative demand • The crops were not previously cultivated and thus no information available on crop coefficients and water use efficiencies which are crucial to designing effective water management.

  4. MATERIALS AND METHOD LOCATION The Teaching and Research Farm, ObafemiAwolowo University, Ile Ife, Nigeria Coordinates: 7° 28՛ N 4° 34՛ E

  5. EXPERIMENTAL DESIGN EXPERIMENT 1 RANDOMISED BLOCK DESIGN VEGETABLES: ODU, OGUNMO, IGBAGBA RATES OF UREA-N: 0, 40, 80, 160 Kg/ha NO OF REPLICATES: 4 AN AUTOMATED WEATHER STATION WAS INSTALLED TO MONITOR THE AMBIENT WEATHER CONDITIONS EVERY 5 MINUTES

  6. EXPERIMENT 2 DRAINAGE LYSIMETER STUDIES Randomized complete Block Design Vegetables: 3 Rates of Urea-N: 0, 40, 80, 160 Kg/ha Replicates: 4 Soil water content was monitored with An FDR moisture meter constructed. Supplementary irrigation. Locations: Ile – Ife – Rain Forest Zone Saaki – Savannah zone

  7. POTENTIAL EVAPOTRANSPIRATION (ET0) This was computed from the climatic data using Penman-Monteith equation (FAO, 1976) Crop Evapotraspiration (ETc) was estimated from soil water balance equation Crop Coefficient (Kc) was calculated as ETc/ET0

  8. RESULTS AND DISCUSSIONS

  9. Table 1: Climatic data for Ile Ife, Nigeria 2013-2014

  10. Table 2: Crop coefficients of the selected vegetables

  11. Fig 1: Fresh shoot yield of the vegetables in response to rates Urea-N application

  12. Fig 2: Water use efficiencies (WUE) of vegetables in response to rates Urea-N application

  13. CONCLUSIONS • The study showed that Odu, Ogunmo and Igbagba required approximately 125, 102 and 50 mm of water per kg of fresh vegetables • Urea-N applied at the optimum rate of 80 kg /ha improved the water use efficiencies of the vegetables • The study has provided data which has now made it possible to design irrigation management for the indigenous vegetables

  14. THANK YOU

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