Integrated Approach for Effective Management of Mango Leaf hoppers
Mango Leaf hopper (Idioscopus nitidulus and Idioscopus clypealis) cause a very serious problem in every mango growing regions of India. The infestation leads to weakening of the plants, reducing percentage of fruit set, which results in premature dropping of fruits, leading to yield loss up to 60 % and even more sometimes. Hence it should be managed properly and carefully to avoid economic loss of crop.
Symptoms:
Leaf hoppers will be present relatively in large numbers on the flowers and new leaf flushes and suck the sap from both flowers and young leaves, which leads to browning and drying of flowers decreasing the percentage of fruit set and ultimately reducing production.
While feeding they excrete sticky fluid substance called as “honey dew” on the leaves and flowers which results in the development of black sooty mould fungi. As a result, the leaves turn black reducing photosynthesis, arresting the new growth and development of plants.
Causes:
1. The adults survive through-out the year by hiding on the tree bark however the population increases during the months of February to march (mango flowering and fruiting season)
2. Depending on the species mango leaf hopper adult flies lay eggs in flowers and new flushes of leaves and may have nearly 2-3 generations during the flowering period.
3. The mango leaf hoppers prefer high humidity with shade conditions for multiplication
4. The poorly managed orchards with very close planting distance favours the multiplication of mango leaf hoppers
5. More water-logged condition leads to the outbreak of Mango leaf hoppers populations
Preventive measure:
1. Maintain wider spacing between plants and ensure proper penetration of sunlight within the orchard.
2. Avoid the application of nitrogen containing fertilizers regularly
3. Avoid over watering or water-logged conditions in the field which induces more flush which attracts mango leaf hoppers
4. Regularly check for the presence of adults and nymphs
5. Collect and Destroy affected plant parts to avoid further spreading
6. Keep the field clean by removing weeds regularly
7. Go for prophylactic spray before flowering with Imidacloprid or Thiamethoxam or Metarhizium (Bio Metaz Metarhizium Anisopliae @ 10 mL/L Or Sun Bio Meta Bio pesticide @ 5mL/L) Or Acephate (Asataf @ 2gm/L Or Starthene @ 2gm/L Or Lancer gold @ 1.5-2 gm/L) + Bavistin @ 2.5-3 gm/L Or Wettable sulphur @ 2gm/L which reduces Mango leaf hoppers populations as well as powdery mildew and reduces the chance of killing pollinators and take up one more prophylactic spray immediately after fruit set also.
Management:
The following combinations should be sprayed at 15 days interval which help to manage with Mango leaf hoppers very effectively and save your crop from major yield losses.
1st spray:- Imidacloprid (Tatamida @ 0.5 mL/L or Solomon @ 0.75- 1mL/L) + (Meptyldinocap) Karathane gold @ 0.7 mL/L + Mango special plant booster @ 2-3 mL/L
2nd Spray:- Thiamethoxam (Actara @ 0.5 gm/L or Alika @ 0.5 mL/L or Areva @ 0.5 gm/L) + Hexaconazole (Contaf plus @ 2mL/L or Contaf plus @ 2mL/L) + Kranti @ 2ml/L
3rd Spray:- Acephate (Asataf @ 2gm/L or Starthene @ 2gm/L or Lancer gold @ 1.5-2 gm/L) + Miclobutanil (Indofil boon @ 1gm/Lit or Systhane @ 1gm/Lit) + Tapas Tej Yield Booster @ 2mL/L
Note:
1. Start the spray schedule just before flowering and next sprays @ 15 days interval.
2. During Mango flowering season, one more serious problem farmers will face is Powdery mildew, which is more prominent in almost all mango growing regions. The above-mentioned combinations along with Mango leaf hoppers will also help in the management of powdery mildew disease, and helps in better growth and development of fruits.
3. At the time of peak flowering spray synthetic pyrethroids (Reeva 2.5 @ 2-2.5 mL/L or Reeva 5 @ 1-1.5 mL/L) or inject Dimethoate to trunk to avoid the killing of pollinators.
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Dr. Asha, K.M.,
BigHaat
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For more information kindly call on 8050797979 or give missed call on 180030002434 during office hours 10 AM to 5 PM
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Disclaimer: The performance of the product (s) is subject to usage as per manufacturer guidelines. Read enclosed leaflet of the product(s) carefully before use. The use of this product(s)/ information is at the discretion of user.
In my 25 year mango orchard, I want to supply sulfur as the tree leaf size is marginally small. Which sulfur containing product can I use at this stage ( just before flowering) to correct sulfur deficiency as a foliar spray as soil application is not possible because irrigation has to be avoided until fruit setting in mango ?
Dear Sir
I have used Imidachloropid 17.8% , 0,5ml /LTR water + Deltamethrin 2.8% ,0.5 /Ltr . But after 7 dayds is incresin population in mango orchard.
Please suggest me for use best insecticide.
Thanks, Sateesh Singh, Amethi
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