Root Knot Nematodes in Guava- Damage and Management
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.
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.
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.
- 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.
- Marshal 3 mL/L + Ecohume 3 mL/L of water
- Trifos 3 mL/L + Gibrax Phytozyme 3 mL/L of water and
- 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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