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Citrus Drought Strategies

Citrus Drought Strategies. Citrus growth stages Flower bud induction and initiation mid Nov - Feb Flowering mid February – May Stage 1 Fruit Growth (cell division) May - June Stage 2 Fruit Growth (cell expansion) July - Aug Fruit maturity June onwards. Flower Bud initiation.

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Citrus Drought Strategies

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  1. Citrus Drought Strategies

  2. Citrus growth stages • Flower bud induction and initiation mid Nov - Feb • Flowering mid February – May • Stage 1 Fruit Growth (cell division) May - June • Stage 2 Fruit Growth (cell expansion) July - Aug • Fruit maturity June onwards

  3. Flower Bud initiation Moderate stress can increase flowering

  4. Flowering and Fruit Set – spring Water stress can cause fruit drop and suppress spring flush Remaining fruit will size better

  5. Fruit Growth (cell expansion) July – Oct Minor water stress can occur without significant effect on fruit size

  6. Fruit Maturity Nov onwards

  7. The first step to improving water use is to check the irrigation system Is the distribution uniformity is as high as possible? Is deep drainage controlled? Fix leaks Clean filters

  8. Place emitters under the canopy to reduce evaporative loss

  9. Mulch !!

  10. Weed!!!!

  11. Prune !! A 30% reduction in tree size reduces water use by 30%

  12. Reduce nitrogen applications

  13. Deficit Irrigation best applied in summer with least effect on fruit size and yield

  14. Tree removal – sick trees, poor performing areas

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