Citrus fruits – Elephant Vert

Crops

Citrus fruits

Crop specifications

Morocco:

8th largest citrus exporter in the world

Cultivated areas:

100 000 ha

Citrus families:

about 50% small fruits (clementines, mandarins), and 50% oranges

Production mode:

in orchards; tree lifespan of 15 to 40 years depending on species and variety

Mainly cultivated in Morocco in the regions:

Souss Massa, Gharb, Oriental, Tadla/Haouz

Markets:

The fees for the local market prevails. About a third of the production is exported



Focus on a major problem with citrus fruits: iron deficiency

DESCRIPTION:

Iron deficiency, or ferric chlorosis, is a serious physiological disorder in plants caused by a low level of available iron in the soil. While total iron is often abundant in soils, its uptake by plants can be blocked by certain factors.

FAVORABLE FACTORS:

  • High levels of Calcium, Zinc, Copper, Manganese
  • Alkaline soils (with high pH)
  • Poorly drained, waterlogged soils
  • Soils poor in organic matter

ROLE OF IRON:

Iron is involved in respiration, chlorophyll synthesis, photosynthesis, protein synthesis, nitrogen fixation …

SYMPTOMS:

Young leaves become pale green see yellow or whitish. In case of acute deficiency, leaves fall prematurely.

IMPACTS AND DAMAGES :

Impaired growth and production;

PREVENTION AND CORRECTION OF DEFICIENCIES:

  • Choice of soil suitable for the requirements of cultivated plants
  • Control of soil pH and supply of organic matter (manure, compost, etc.)
  • Adequate irrigation (avoid stress and suffocation)
  • Supply of chelated iron to the soil (iron protected from oxidation, therefore available to the plant)

Crops

Citrus fruits

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