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Root Knot Nematodes in Guava- Damage and Management

Posted by BigHaat India on

Root Knot Nematodes in Guava- Damage and Management

Guava1

Guava (Psidium guajava L.) is one of the important commercial fruits in India. A number of plant pathogens of have been reported to attack guava trees including fungi, bacteria, algae and nematodes.

Guava2

The Organism

In present Guava cultivation a new species of root-knot nematode i.e. Meloidogyne enterolobii is an emerging problem and wide spreading now across the country.

Organism

Symptoms:

Guava plant show above-ground decline symptoms

    • Drastic reduction in plant growth, before death of tree
    • Leaves shows bronzing
    • Plant exhibits stunting growth
    • Number, size of Flowers and fruit will get reduced
    • Declined yield quality and quantity.
    • Damage1
    Below ground symptoms-
    • Roots with large sized galls,
    • Absence of fine white roots, a poorly developed root system
    • Severely infested roots will be distorted by small and large multiple galls
    • Brown colored degraded roots are visible at severely infected roots.

    Damage2

      Solutions

      1. Marshal 3 mL/L + Ecohume 3 mL/L of water

      https://www.bighaat.com/products/marshal + https://www.bighaat.com/products/ecohume-bioactive-humic-substances-6

         Drench1

      1. Trifos 3 mL/L + Gibrax Phytozyme 3 mL/L of water and

      https://www.bighaat.com/products/trifos-40-insecticide    + https://www.bighaat.com/products/gibrax-phytozyme-growth-regulator

      Drench2

      Important Note:

      • Above mixtures should be drenched about 3 – 4 litre per tree
      • Two to three times each combination
      • One after the other at weekly intervals
      • Irrigation must not be provided two days before application and after application of the above mixtures.

       

      K SANJEEVA REDDY,

      Senior Agronomist, BigHaat.

       

      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.


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