Organic cultivation of Carrot
Hills: Ooty-1, Early Nantes and New Koroda
Plains: India Gold, Pusa Kesar and Half Long Danvers
Carrot is a cool season crop and when grown at 15°C to 20°C will develop a good colour. The carrot crop needs deep loose loamy soil. It requires a pH ranging from 6.0 to 7.0 for higher production.
Hills: At elevation above 1500 metres, Carrot can be grown throughout the year under assured irrigation. At elevations between 1000 - 1500 metres, Carrot can be grown in July - February.
Mark the rows with spacing of 25 - 30 cm apart. Sow the seeds mixed with sand (one part of seed with 4 parts of sand).
Hills: 10 cm between plants
Plains: 5 cm between plants
Preparation of field
Hills: Prepare the land to a fine tilth and form raised beds of 15 cm height, one metre breadth and convenient length.
Plains: Two ploughings are given and ridges and furrows are formed at 30 cm spacing.
Seed treatment with cow pat pit @ 3 g in 1 litre of water for 24 hours
Seed treatment with 5% Trichoderma viride
Seedling root dip with 5% Pseudomonas fluorescens before transplanting
Irrigation should be given once in five days. During drought period, after giving irrigation in the evening, beds should be covered with wet gunny bags. This prevent excessive water loss during sunny days. Germination of the seeds is also improved.
Application of fertilizers
Green manuring with lupin 60 days before planting
Sprinkling horn manure to the soil at the time of land preparation @ 75g/ha by dissolving it in 40 litres of water
Application of well decomposed farm yard manure @ 50 t/ha at the time of land preparation
Application of biodynamic compost @ 5 t/ha at the time of land preparation
Application of vermicompost @ 5 t/ha at the time of land preparation
Application of neem cake @ 1250 kg/ha at the time of land preparation
Application of biofertilizers, Azospirillum and Phosphobacteria @ 25 kg each/ha at the time of land preparation
Spraying cow pat pit @ 5 kg/ha in 100 litres of water on 45th, 60th and 75th day after planting
First weeding is to be done on 15th day. Thinning and earthing up should be given on 30th day.
Foliar spraying of panchagavya @ 3 per cent at 10 days interval from 1st month after sowing
Spraying 10% vermiwash 5 times at 15 days interval from one month after sowing
Foliar spray of horn silica @ 2.5 g/ha in 50 litres of water on 65th day after sowing to increase the yield and quality of the carrot roots
Carrot is not much affected by pests.
Root knot nematode
Application of neem cake @ 1 ton/haat the time of sowing to control root knot nematode, Meloidogyne spp
Growing carrot once in 3 years by following crop rotation
Growing marigold once in 2 years
Aplication of Paecilomyces lilacinus @ 10 kg/ha before sowing seeds
Soil borne diseases
Foliar spray of 5% Manchurian tea filtrates 3 times at one month interval from one month after sowing/planting.
Foliar spray of 3% Dasagavya at 10 days interval from 1st month after planting.
Application of Trichoderma viride @ 5 kg/ha at the time of land preparation.
Application of Pseudomonas fluorescens @ 5 kg/ha at the time of land preparation.
25 - 30 t/ha in 100 - 120 days.