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Posted 01/21/2021 in Agricuture by Wallace Mukoka

CARROT FARMING


CARROT FARMING

Carrots (Daucus carota)

The carrot is a root vegetable that is often claimed to be the perfect health food. It is highly nutritious, and loaded with fiber and antioxidants.

Climatic Requirements

Temperature

Optimum production temperature is 15 –21 0

At high temperatures, above 25 degrees. 

Soils

The growth is slower and short thicker roots with pale colour are produced. Plant in deep, rich light soils. Insufficiently decomposed manure and stony soils cause forking in carrots. The soil pH ranges from 5.5-6.8. Acid soils must be avoided.

Planting

The crop is sown in situ. Can be grown all year round but the best time to plant is May to July. Carrots may be drilled in or broadcast but should be thinned after 1 month to 

leave 3– 6 cm apart. The sowing should be at the rate of 3-8 kg/ha.

Fertilization

Before sowing apply a basal fertilizer of 100– 200kg / ha Compound D.

Weed Management

Care should be taken in weeding to avoid damaging roots

Weeds can be kept under control by mechanical means.

Insect Pest Management

Pest

Aphids 

 Symptom 

Sucking pests

Leaves wilt and turn yellow

Control

Dimethoate 40EC at 10ml/10L of water.

Pest

Nematodes 

Symptom 

Attack the root and cause slow growth

Tubers are deformed, forked or stringy

Control

Crop rotation and use of resistant plants and soil disinfection

Disease Management

Disease 

Powdery Mildew 

Symptoms 

Whitish growth on leaf under surface and later whitish spot appear on both leaf and stem surface.

Control

Application of sulphur in the form of Dithane M45 at 30g/15l water or Benomyl at 30 ml/15 l water

Disease

Leaf Blight 

Symptoms 

Blackening of foliage which subsequently dies

Control

Dithane M45 20g/ 10L

Copper oxychloride 85% wp 200g/100L every 7 – 10 days

 Disease

Bacterial Soft Rot

Symptoms 

Reduce the carrots to a soft slimy mass

Control

Growing carrots in well drained soils, 

Rotation– do not follow carrots after lettuce or cabbage. 

The roots must be kept well ventilated after lifting

Harvesting 

Done after 3 months, ideally when the roots are more than 2 cm diameter.

A plough must loose the soil first. Harvest during cooler day times and keep in a cool place or sprinkled with water to maintain the fresh state. The tops are cut off and carrots are packaged in transparent film bags to increase shelf life. The expected yield is > 25 tonnes per hectare with good management.

Storage

The crop can be stored for 6 months at about 0 degree and relative humidity of 

93-98 %.


Author; Wallace Mukoka


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