Friday, 28 April 2017

Soil and Root Dwellers- Nematodes

Classification;

 
  • Plant-boring pests- Attack the plants roots, tubers, bulbs, rhizomes or the basal regions of the stem
  • Some are disease vectors
  • Above ground feeders- on the leaves above ground in wet weather or dark phase.
 

Nematoda; A virus Vector

  • They are free-living
  • Attack the outside of the plants (ectoparasitic)
  • Live within the plant as well (endoparasitic)
  • These can be classed as either migratory (Moving around form to one place to another) or sedentary (staying in one place)  
Example; Xiphinema spp. (Dagger nematodes)
 
 
This is a soil food web which shows how nematodes are put into the system as a vector under the soil and into animal species as well.
 
 


 
Root-Knot nematodes are plant parasitic nematodes. They exists in the soil where the areas are hot in climate or winters are short. About 5% of global crop loss is due to this nematode, the root-knot development drains the plant's photosynthetic material and nutrients.

Root-knot has a huge economical impact damaging plants and field crop. These nematodes are distributed worldwide and are extremely difficult to control.


Root Knot; Before and After







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