| Fungal diseases | |
|---|---|
| Anthracnose | Glomerella cingulata (Colletotrichum gloeosporioides, anamorph) |
| Bitten leaf | Ceratocystis paradoxa (Chalara paradoxa, anamorph) |
| Bipolaris leaf spot | Bipolaris incurvata |
| Black scorch | Ceratocystis paradoxa (Chalara paradoxa, Thielaviopsis paradoxa, anamorphs) |
How do you protect a coconut?
Swabbing with neem oil 5% once on the base and upto 2 m height of the trunk for effective control. Spray Copper sulphate 1 % or Cashew nut shell oil 80 % followed by Copper sulphate 1 % then neem oil 5 % and copper sulphate 1 %, then NSKE 20 % to preserve planted coconut leaves from the termite attack.
Why do coconut leaves turn yellow?
Nitrogen deficiency begins as a uniform light green discoloration / yellowing (uniform chlorosis) of the oldest leaves. Yellowing starts from tip to base of the lower leaves and will proceed up. As the deficiency progresses, younger leaves will also become discoloured. Older leaves are golden yellow colour.
Why do coconut leaves turn black?
According to experts, the insect, in its larval stage, feeds on the sap of coconut fronds. “Adult insects create white-coloured formations on the underside of leaves, which then turn black due to fungal formation.
What is the best fertilizer for coconut trees?
Nutrient Management :: Coconut. From 5th year onwards, apply 50 kg of FYM or compost or green manure. 1.3 kg urea (560 g N), 2.0 kg super phosphate (320 g P2O5) and 2.0 kg muriate of potash (1200 g K2O) in two equal splits during June – July and December – January.
What causes holes in coconut trees?
Damage symptoms:
Red palm weevil is one of the most destructive pests of coconut, oil palms and ornamental palms. The hole can be seen on the stem with chewed up fibres protruding out. Many times reddish brown liquid can be seen oozing out from the hole.
Why are my coconut tree leaves turning brown?
Too low humidity can cause browning leaf tips with yellow halos. Although this won’t kill your specimen, you may want to increase the local moisture to prevent the new growth from adopting these symptoms.
How can we control nitrogen deficiency in plants?
How to Fix a Nitrogen Deficiency in Plants
- Treat plants with a food rich in nitrogen.
- Use an organic fertilizer or nitrate of soda.
- Increase pH for better root absorption of nitrogen.
- Increase nutrient levels with regular spring feedings.
- Use liquid plant foods.
- Mulch the soil.
- Use a fertilizer rich in nitrogen.
Why do coconut trees need salt?
A nationwide survey conducted by the Philippine Coconut Authority revealed that 24 out of 54 coconut-producing provinces have widespread chlorine deficiency. The application of sodium chloride (NaCl) or common table salt can effectively control this problem.
When do you put salt on a coconut tree?
The salt is applied around the coconut tree, about 1-meter diameter, during the onset of rainy season. The salt fertilizer may be dug in or be put on the soil.
How much water do coconut trees need?
Coconut trees need 15-30 gallons of water per day if being grown for fruit harvesting purposes. They can also be grown indoors, but need much less water since they will not bear fruit. The amount of water a coconut tree needs will depend on it’s climate, which is generally tropical.
How do you treat leaf spots?
Treatment:
- Prune and remove heavily affected leaves.
- Provide frequent treatment of neem oil or another fungicide to the foliage.
- Avoid getting water onto the leaves as it recovers.
- Keep the plant away from other plants temporarily.
- Monitor daily to ensure the infection has stopped spreading.
What insects eat coconut trees?
A number of pests, including several kinds of scale, palm aphid, spider mites, mealybugs, palm weevils and caterpillars, are occasionally found, but usually do not require control measures. Nematodes may infest this palm.
How do you treat black fungus on palm trees?
Removing and Preventing Black Fungus
To remove it, you should treat aphids with neem oil or horticultural oil or try spraying them with water from the garden hose. Once the aphids are gone, the black fungus will likely disappear too.
Which fungus grows on coconut?
Results identified Aspergillus niger, Rhizopus stolonifer and Penicillium italicum as the seed-borne fungi of coconut. Frequency of occurrence was 80% for Aspergillus niger and 100% for both Rhizopus stolonifer and Penicillium italicum.
What is coconut Mould?
Aspergillus mould infects copra and coconut seeds. The mould is typically a green-yellow colour and is visible on the outside of the copra or seeds. Seeds can change colour and look rotten. The fungus causes poor seed development and therefore affects seedling health.
How long can a coconut last?
Healthy whole coconuts can last up to four months at room temperature. Young coconuts often referred to as Thai coconuts will last up to two weeks in your refrigerator. Shredded coconut out of a bag can last up to six months if stored properly in the refrigerator.
Is salt good fertilizer for coconut trees?
The use of sodium chloride (NaCl) or common salt (CS) as fertilizer is a practical means of increasing coconut production. Salt is the cheapest and best source of chlorine to increase copra yield. Chlorine deficiency in coconut is widespread in inland areas.
How can I make my coconut grow faster?
Water the tree at least 2 times per week so the soil is moist but not too wet. Make sure that the tree gets lots of light, but not constant brightness. Some shade is preferable. For outdoor plants, you can make a mini greenhouse.
Which soil is best for coconut tree?
Red sandy loam, laterite and alluvial soils are suitable. Select sites with deep (not less than 1.5 m depth) well drained soil heavy, imperfectly drained soil is unsuitable.
How do you stop coconut stem bleeding?
Treat wounded or infected areas with fungicide and tar (for example, Bordeaux paste, mancozeb, or copper oxychloride), followed by sealing with coal tar two days later. Burn or destroy the chiseled pieces. Apply neem cake to the base of affected plants.