◀ Back COCONUT [ Cocos nucifera L ]

Varieties :Assam Tall, T x D hybrid (Chandrasankar), Bengal Selected, Bengal Hazari, Kamrupa and Kahikuchi 1.

Sowing time is December to February.
March-April under high land condition
September-October under low land condition

Soil :Sandy loam. If the soil is clay, 1 or 2 basket of sand per pit should be applied.

Sowing the nut: 1m wide and 30cm raised beds of required length should be prepared. Large size nuts are planted horizontally with the widest of the three segments upwards which helps in the plumule emergence.

Selection of Mother Palm :
1. Select palm producing above 100 medium sized nuts /palm/year.
2. Age of mother palm should be above 20-25 years.
3. Mother palm should have well developed crown with maximum number of horizontally oriented leaves.
4. Sept.-Dec. harvested nut should be used.

Selection of seedlings:
1. One year old seedling should be planted.
2. The seedling with early splitted leaf is preferable. The seedlings having 5-6 leaves or just after splitting of leaves become ready for planting.
3. The seedlings should have stout collar.
Planting Distance : 7.5 m x 7.5 m
Pit size :1 m x 1 m x 1 m

Pit filling:
Pit should be filled up with mixture of top soil, 20 kg compost or dried cowdung and 100g of 5% malathion dust up to 2/3rd of pit.

Irrigation: Irrigation increases total number of female flowers, nut setting, endosperm content, fruit weight and ultimately crop yield and reduces immature nut fall. Palms should be irrigated at 10 days interval during the dry months.

Weeding:Light ploughing or harrowing twice a year in February-March and September-October. Weed management by mulching in coconut nursery:50 micron black polyethylene film mulch can be used as mulching material in coconut nursery with a benefit: cost ratio of 2.36.

Intercropping:The crops, like black pepper, betelvine, grasses, turmeric, ginger, pineapple, banana (Chenichampa), Kachkal, Assam Lemon and vegetables like pumpkin, okra, brinjal etc. have been found to be very profitable as intercrop in coconut orchard.
Intercropping with colocasia under half dose of recommended fertilizer and ginger and turmeric with full dose of fertilizer can be grown profitably. Coconut based cropping system: Coconut + Turmeric + Black pepper as alternate cropping system can be adopted for a benefit: cost ratio 1.70.

Fertilizer Dose:(per palm per year for bearing plants)
FertilizerImproved varietiesHybrid varieties
Urea1.50 kg1.10 kg
SSP2.50 kg3.12 kg
MOP1.75 kg3.34 kg
Borax25 g25 g

The fertilizer should be applied in two equal split doses, i.e. in April and October. The fertilizer should be applied to a trench of 30 cm width and 10 cm depth at a radius of 1 to 1.75m away from the trunk depending upon the age of plant and covered with green leaves and then by soil. For seedling, the dose should be increased up to 4 th year at the following rates:
1styr. – 1/5 th of the full dose
2ndyr. – 2/5 th of the full dose
3rdyr. – 3/5 th of the full dose
4thyr. – 4/5 th of the full dose
From 5 th year onwards-full dose of fertilizer for bearing palm
For integrated nutrient management in T x D hybrid (Chandrasankar) 500g vermicompost, 500g P2O5and 2000g K2O per palm per year should be applied.

Plant Protection:
White Ant: Apply 5% malathion powder @ 200 g per 7.5 sq. m. in nursery and 100 g per pit during planting.
Rhinoceros beetle: Apply 5% malathion dust mixed with equal quantity of sand at the axil of leaves of the crown.
Red palm weevil and Mealy bug: Spray Endosulfan 35 EC @ 1 m/lit.Pour monocrotophos 2ml/lt. in the trunk cavity and plug with mud.
Terathebaand Betrachedraspp: Clean the palm twice a year before and after monsoon and spray dimethoate 30 EC 1 ml/lit.
Crown chocking: Apply 25 g Borax in a trench of 15 cm width and 10cm depth at a distance of 1 to 1.75m away from the trunk. In acute cases repeat the application after one month of first application for three times.
Stem bleeding: Scrape out the infected portion completely and apply Bordeaux paste or coal tar. Chiselling out of the infected portions followed by wound dressing with tridemorph (1 ml/litre) or carbendazim (1 g/litre) and finally application of hot coal tar will manage the stem bleeding disease of coconut.
Spindle rot: Spray 1% Bordeaux mixture immediately after emergence of seedlings.

Ganoderma disease:
1. Drainage should be improved.
2. Recommended dose of fertilizer should be applied.
3. When disease symptoms are observed, isolate the diseased plant by digging a trench 60 cm deep, 30 cm wide and 1 m away from the trunk and drench the trench with 0.2% Captan.
4. Application of 5 kg Neem cake per palm in addition to organic matter.
5. Apply 1.5 to 2 kg Sulphur powder around the palm.
6. Palms showing initial disease symptoms should be treated with 0.3% Captan
or 0.2% Carboxin three times at monthly interval with 10 litres of solution per palm.
7. Strict phytosanitary measures should be taken by removing the diseased palm along with roots and burying them completely.
8. Grow one row of banana plant as a disease resistant crop in between two rows of coconut.
9. Soil drenching with 1 g copper sulphate + 1.5 g Auriofungin solution in 100 ml of water.
Bud rot: Clean the affected portion and apply 1% Bordeaux mixture.
Leaf blight: Remove the older affected leaves and spray 1% Bordeaux mixture.

Immature nut shedding:
1. Apply recommended dose of fertilizer per year.
2. Apply pesticides and fungicides against pests and diseases.
3. Irrigate the palms during dry months to prevent formation of abscission flowers at weekly interval for a month after fruit set.

Benefit: cost ratio:
1.60 after 6 years
5.70 after 10-12 years (full bearing plant)