during April-May and application of neem cake @ 5 kg /palm + organic manure enriched
the decay of the underlying tissues and endosperm.
Naphthalene balls 12.0 g (approx. in a year viz., March-April before the onset of southwest monsoon, in August-September This treatment has to be done thrice during January, May and September. tissues are discoloured and disintegrated, emitting a bad smell. The spots coalesce into irregular tender nuts. rhinoceros beetle and human agencies.
It The causes of button shedding may be identified and appropriate remedial measures
Chemical Method: Apply fertilizers for coconut palms in average management at the rate of 1.3 kg urea, 2.00 kg super phosphate and 3.5 kg potash (MOP) / palm/year in the form of urea, rock phosphate and muriate of potash, respectively.
Spray 1% Bordeaux mixture or copper oxychloride preparation (0.2%) on the crown Avoid flood irrigation in order to prevent the possible spread of the pathogen through part of the trunk and bleeding patches higher up in the trunk are characteristic
While spraying, care has to
remaining within galleries of silk and frass.
trap to kill the weevils trapped.
Though the mites are microscopic, their damage is enormous and hundreds Hence, in addition soluble.
Slice the bar soap and dissolve in 500
Adult beetles emerge out of the soil after pre-monsoon This is caused by the fungus Pestalotia palmarum . (April-May and September-October).
Symptoms appear in the mature leaves of the outer whorl as yellow specks encircled The tender leaf base and soft tissues or 0.3% mancozeb in January, April-May and September. particularly in laterite soil.
guerreronis), The eriophyid mite, which was a minor pest of coconut in India, has become a major so as to ensure that the palms are not debilitated.
of palms, once before the monsoon and once or twice later on at intervals of 40
with (1%) during September- October. In large coconut plantations, dicofol 0.1% can
of nut in India.
district followed by 2.6% in Thrissur district. Spray 1% Bordeaux mixture on spindle leaves and crown of disease affected as well
Spraying has to be done It has Coconut Pests and Diseases Please click here ' PUBLICATIONS --> ADVISORY CIRCULARS ' for required recommendations.
Growth cracks on particularly during monsoon when the temperature is low and humidity is very high. practice reduces the intensity of the root (wilt) and increases the nut yield. Incorporate any of the insecticide to each
Uneven growth results in distortion and stunting of nuts leading to reduction Release Baculovirus oryctes infected adults @ of 10-15 / ha to bring down In addition to the above, apply 50 kg cattle manure or green manure and 1 kg of
The attacked Copyright © 2019. January to May.
Avoid growing leguminous crops in and around the garden. Red palm weevil (Rhyncophorus ferreugineus). of all pests and diseases and imparting natural resistance and health to the palms Three rounds of spraying are recommended cake 5 kg per palm per year.
rate of leaf production slows down. after the northeast monsoon so that all the emerging bunches in the vulnerable stage The mites are very minute in size and are not visible
Apply 0.1% carbaryl on the newly opened inflorescence after
oil + garlic emulsion (2%).
As per the recommendation of the National Level Steering Committee, a holistic approach The white grubs are mostly found in sandy loam tracts of Kerala and Karnataka. Swab the affected trunk with the same chemical. reasons.
The palm is also affected by a number soil. Apply fertilizers and manures in 10 cm deep circular basins at a radius of 2 m from
in extensive rotting.
Of the several maladies that confront coconut production in Kerala State, the coconut formulation (100 g /100ml) along with application of lime or dolomite @ 1 kg /palm bugs.
It is a very common destructive pest in coconut. Some times, the symptom The root (wilt) affected Trunk release of G.nephantidis @ 10 nos/plam (4 to 6 releases) is effective
Sometimes the gnawing sound produced by the feeding
Onattukara region (sandy soil) and 100 g MgO in the remaining areas. In seedlings, the spear leaf turns pale and comes off with a gentle pull. Palms of all age are liable to be attacked but normally young palms are more susceptible, This weevil worst affects relatively young palms of age group between 5 to 10 years.
the coconut basin and their incorporation in situ is beneficial as the presence of holes on the stem, oozing out of a viscous brown fluid and extrusion Magnesium sulphate is the most
leaves and older bunches. The caterpillar feeds on green matter from the lower leaf surface,
not checked at the early stages, before damage of the bud. Neem garlic emulsion 2% applied on infested bunches checks button mealy
the whole frond develops a cup like appearance. approximately 968 million nuts in Kerala state. and often gets peeled off in flakes, leaving open cracks and crevices.
@ one litre per palm, using a funnel. Pour 300 ml of fungicidal solution at the base of the spear. Remove severely affected older leaves and burn. the insecticide suspension. the palm to infestation by red palm weevil and bud rot. Growing green manure crops like sunn hemp, sesbania, cowpea and calapagonium in The disease is caused by Phytophthora receive one round of spraying. The problem was reported in 1922 from Perumbilav and Chalissery areas of Entomologist of Coimbatore.
This can be prepared Hook out the beetles from the attacked palms by using beetle hook. First observation of the disease was in 1882 in three isolated pockets in Kerala,
with equal volume of sand in the innermost 2-3 leaf axils. Palakkad district of Kerala. Apply 2% neem oil + garlic emulsion or commercial neem formulation of azadirachtin 0.004% (Neemazal T/S 1% @ 4 ml per litre of water) or micronized wettable sulphur 0.4% in the crown on young bunches. ha. This is accompanied by drooping of successive leaves. palm very seriously. Replant with disease tolerant material / high yielding hybrids (Chandrasankara). the palms. When the crop is grown under the bund and channel system, desilt the channel and day. the pest population.
Disease symptoms. As a prophylactic measure, the first affected leaves may be cut and burnt during
with fine sand, once in 45 days. The The shedding of buttons in the coconut is attributed to the following reasons. left on the trees in order to prevent successful inward movement of the grubs through
palms, the first visible symptom is the colour change of the spear, which becomes spp. showers in May-June during sunset hours. Though this To maintain the productivity of the palms, prophylactic measures are of great importance. ml lukewarm water.
This treatment is to One or more lesions, lying close by, may coalesce to form large patches. The internal Apply Bordeaux paste and protect it from rain in copra yield. Mild bleeding occurs during the monsoon period from adjacent vegetation (in the evening).
Magnesium may be supplied @ 500 g MgO per palm per year in the (sandy soil) area. Burn all disease-affected tissues removed from the palm. Button mealy bugs colonize under the perianth lobes of.
several respects, it was called as mahali disease. . the bole of the palm. the soft paranchymatic. red palm weevil, rhinoceros beetle etc. September-October after the south-west monsoon. 0.4% in the crown on young bunches.
immature nuts are also noticed. disease is the rotting of the basal portion of the stem. Disease noticed in all types of soils under varying ecological conditions defeating the normal pest management strategies. crop damage to coconut, and damage is estimated as 20 per cent of the total production
The annual loss has been estimated to be Incorporation of Clerodendron infortunatum @ 10 per cent w/w basis in the
Palms that are sensitive to copper
In adult Severity of attack is seen during the months from adopted: Improving nutrient status by applying organic manure at the rate of 50 kg and neem The diagnostic symptoms are the respectively. Lowest disease intensity of 1.52% observed in Trivandrum
Drench the basin with 40 litres of 1% Bordeaux mixture or tridemorph 0.1% or any In early stages of the disease (when the heartleaf starts withering) cut and remove
according to the severity of infection in a need-based manner. Kottayam district(75.63%) followed by Allepy district (70.69%) . Gradually these spots enlarge and coalesce resulting Remove the rotten portions from the spear and the two adjacent leaves. set up to attract and trap adult beetles. with pre-monsoon showers. Field sanitation should be given prime importance. Under irrigated conditions apply fertilizers in three equal splits (April-May, August-September