The Tamil Nadu Agricultural University (TNAU) has intensified research on root knot nematode in guava.
The nematode, which is said to have affected young trees in and around Dindigul, the hub for guava cultivation in this part of TN has been identified as Meloidogyne enterolobii , a species not encountered in India so far.
Farm varsity researchers perceive that this nematode might have spread from other countries through saplings.
Urging guava growers to avoid nematode-affected saplings, the researchers said that this unseen root knot nematode associated with guava is capable of killing the tress within three months after the onset of symptoms such as yellowing, shredding of leaves, drying of branches, reduced vigour, less productivity etc.
While cautioning growers, experts advised them to remove and destroy nematode affected trees, apply farm yard manure, neem cake.
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