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Under Ground Symptoms
Under Ground Symptoms |
The common symptoms shown on below ground parts of the plants suffering from nematode infestation are:
Depletion of root system is the common symptom of nematode attack but the way in which a reduced system occurs, varies from species to species. Reduced root system in Carnation roots pruned due to root-knot nematode
Short stubby corn roots due to Trichodorus sp. 2. Root lesions
Tuber rot caused by D. destructor Some species of nematodes do not produce root decay or lesions but numerous short lateral roots may form in the vicinity of nematode injury causing excessive root branching or a hairy root condition. The formation of such numerous small roots at the expense of more deeply penetrating larger roots often renders the plants more susceptible to wilting and these plants are easily uprooted and their ability to absorb nutrients is also impaired.
Fig 9.5a: Root proliferation of beet root by H. schachtii ig. 9.5 Root proliferation in summer squash Photo by Stephen Lewis, Nemapix Vol. 3 |
Last modified: Thursday, 21 June 2012, 9:51 AM