kernel extraction

advertisement
Fruit Pests
Mango
Common name
Scientific name
Family
Order
Mango fruit weevil
Sternochetus mangiferae
Curculionidae
Coleoptera
Mango defoliator
Cricula trifenestrata
Saturniidae
Lepidoptera
Mango leaf cutting weevil
Deporaus marginatus
Curculionidae
Coleoptera
Mango hopper
Idioscopus sp./Idiocerus sp.
Cicadellidae
Hemiptera
Mango stem borer
Batocera rufomaculata
Procontarinia(=Erosomyia)
mangiferae
Cerambicidae
Coleoptera
Mango gall midge
Cedidomyiidae Diptera
Jackfruit
Jackfruit bark borer
Indarbela tetraonis
Cossidae
Lepidoptera
Jackfruit shoot and fruit borer
Diaphania caesalis
Pyralidae
Lepidoptera
Banana
Banana leaf and fruit beetle
Nodostoma viridipennis
Eumolpidae
Coleoptera
Banana stem weevil
Odoiporus longicollis
Curculionidae
Coleoptera
Litchi
Litchi fruit borer
Cryptophlebia illepida
Tortricidae
Lepidoptera
Litchi mite
Aceria litchii
Eriophyidae
Acari
Litchi fruitfly
Bactocera dorsalis
Tephritidae
Diptera
Papilio demoleus
Papilionidae
Lepidoptera
Phyllocnistis citrella
Gracillariidae
Lepidoptera
Lemon
Citrus caterpillar(Lemon butterfly
caterpillar)
Citrus leaf miner
Guava
Guava fruit borer/butterfly
Virachola isocrates
Lycaenidae
Lepidoptera
Spiralling whitefly of guava
Aleurodicus dispersus
Aleyrodidae
Hemiptera
Guava fruitfly
Bactrocera correcta
Tephritidae
Diptera
Guava mealybug
Chloropulvinaria psidii
Coccidae
Hemiptera
Dynastidae
Coleoptera
Others
Rhinoceros beetle of Cocunut
Dr. Mohammad Atikur Rahman
Oryctes rhinoceros
Page 1
Fruit Pests
Mango fruit weevil
Sternochetus mangiferae
Curculionidae
Coleoptera
Nature of damage: Adult female lays marble sized eggs under the skin of young green mango with
the help of snut. After hatching the legless grub feed on the pulps by making zigzag tunnel. With
increasing the size of fruit the feeding tunnel gradually fill up with excreta. After cutting of infested
fruit zigzag tunnel grub pupa and adult can be found inside the fruit. The infested fruit get rotten
easily and become inedible. The adult emerge cutting its way out of the fruit.
Control measures:
 Clean all sorts of weeds within 4 meters area around each of the mango tree during JanuaryFebruary.
 After harvesting of mango all parasitic plants grows on mango should be destroyed.
 Spray with Sumithion 50EC @ 2ml/L of water at 15 days interval for several times during
March-April.
Mango hopper
Idioscopus sp.
Cicadellidae
Hemiptera
Nature of damage: Mango leafhoppers feed on vegetative flush tissue by sucking the sap. They lay
eggs into the underside of the mid ribs of young leaves. Feeding and egg laying cause curling and
distortion of new flush and young leaves. In these situations, the insects are rarely seen. Presence of
sooty mould on older leaves may also be an indication of infestation by leafhoppers but several other
sucking pests can also cause these symptoms on mangoes. These pests can build up very rapidly on
flowering trees and cause damage by their numerous egg laying punctures to the flower stems which
then wither and fail to set fruitlets. The leafhoppers suck the sap from the and heavy production of
honeydew associated with sooty mould growth may retard tree vigour and lead to fruit drop. If left
untreated, leaves and flowers will be damaged and fruit roduction can be severely affected. On
heavily infested trees, crop losses of 50% or more have been recorded.
Control
 The hopper can be collected by bagging and be killed in kerosene water.
 Spraying with Actara 25 WG @ 5g/10L of water.
 Spraying with Magic 10EC 1 ml/L of water.
 Spraying with Carbaryl 50WP@ 4gm/L
Dr. Mohammad Atikur Rahman
Page 2
Fruit Pests
Mango leaf cutting weevil
Deporaus marginatus
Curculionidae
Coleoptera
Nature of damage: Adult female of mango leaf cutting weevil lays eggs in the both side of midrib of
newly flushed leaves and then cut off the leaves from the apex of petiole. The leaves drop on the
ground. The plant thus loses a lot of young leaves. They also feed on leaf tissue by scrapping.
Control
 Collecting the cut leaves loaded with eggs from the soil and destroying them to reduce the
number of insects.
 Covering of newly flushed leaves with mosquito net to reduce the attack of weevil.
 Spraying the newly flushed leaves with Sumithion 50 EC @ 2 ml/liter of water or Decis
2.5EC@1ml/L of water.
Banana leaf and fruit beetle
Nodostoma viridipennis
Eumolpidae
Coleoptera
Nature of damage: The adult beetle attack ventral surface of young leaf and the green portion of
leaves are eaten up by scrapping in irregular patches. When the young bunch emerges from
developing spathe, the beetle feed on the young surface of the fruit by scrapping. With the increase of
age of the fruit the scar become bigger in size and the scrapped fruit have low market value. The grub
feed on roots of the plants up to a depth of 6 inches.
Control measures
 Avoid cultivation of banana in highly infested area. Crop rotation should be done. Ratoon
crop should be avoided.
 Bagging of young banana with poly bag (42x30 inch) after emerging young bunch from
spathe. This bag should have 20-30 small holes.
 Spraying with Diazinon 60EC @ 2ml/L of water or Sevin 85 WP 1.5g/L of water 5 days
before emerging bunch, after emerging bunch, emerging of first young banana and whole
banana from bunch.
Dr. Mohammad Atikur Rahman
Page 3
Fruit Pests
Rhinoceros beetle
Oryctes rhinoceros
Dynastidae
Coleoptera
Nature of damage: The adult beetle bores through the soft tissues by cutting and chewing the tender
unopened leaves and spathes. In this process leaves and inflorescence are severely damaged. When
they attack unopened spathe, the inflorescence become badly damaged and in severe cases the entire
inflorescence get dried up. Though death is not common in the grown up coconut plant. The beetle
may cause the death of the seedlings by boring and destroying the growing point. The presence of
beetle in the crown is usually indicated by the remains of chewed up fibrous frass material around the
bore hole.
Control
 The coconut plants should keep neat and clean.
 Dung and rotten heap of vegetables matter should be removed once in every 2-3 months.
 Mechanical extraction of beetle from the crown by means of hook is also effective.
 Apply Sevin 85 WP @5g/10L of water at breeding places of insect.
Guava whitefly
Aleurodicus dispersus
Aleyrodidae
Hemiptera
Nature of damage: Both nymphs and adults suck sap from ventral surface of leaves and young twigs.
The affected leaves wither and fall down, They secrete honey dew and wax materials on which black
soot mould fungus develop which reduces photosynthesis of the plant ultimately affect the yield of the
plant.
Control
 At initial stage of infestation spray the infested leaves with soap water @ 10g soap dust /10 L
of water.
 Lady bird beetle can be released as bio-control agent.
 Spraying the infested leaves with neem seed kernel extract at 7 days interval @ 1 kg seed /20
L of water for 12 hours and then filtrated solution is used as extract.
 In case of severe infestation, stray leaves with Starter 40EC @2 ml/L of water.
Dr. Mohammad Atikur Rahman
Page 4
Fruit Pests
Jackfruit shoot and fruit borer
Diaphania caesalis
Pyralidae
Lepidoptera
Nature of damage: Among insect pests, the shoot and fruit borer, Diaphania caesalis, is a major pest
of jackfruit. The insects lay eggs on tender shoots and flower buds. On hatching, the reddish brown
larvae bore into shoot, flower buds and fruits, resulting in the wetting of affected parts. Larvae make
small holes and enter the fruit. At the initial stage of damage, a small hole with fresh excreta can be
seen. Gradually the hole is extended and at a later stage fungal infection occurs. Tender fruits may
drop under severe infestation, leading to losses of 30%.
Control:



To protect them from egg laying, fruit may be covered with polythene bags and the affected
parts removed and destroyed.
Infestation may be checked naturally if the trees are regularly pruned of dead and diseased
twigs and small shoots within the canopy, to allow sufficient light and air to pass through.
Pruning may be done soon after harvest or at the end of rainy season.
Spraying of carbaryl @ 4 g per litre of water during flowering may be recommended.
Dr. Mohammad Atikur Rahman
Page 5
Download