Prediction of Nematode Population Dynamics using Weather Variables in Leguminous Crops

DOI: 10.18805/IJARe.LR-4572    | Article Id: LR-4572 | Page : 383-386
Citation :- Prediction of Nematode Population Dynamics using Weather Variables in Leguminous Crops.Indian Journal of Agricultural Research.2021.(55):383-386
Kamal Batra, Parul Gandhi bat.kam@gmail.com
Address : Manav Rachna International Institute of Research and Studies, Faridabad-121 004, Haryana, India.
Submitted Date : 24-12-2020
Accepted Date : 3-02-2021


Background: The soil nematodes can affect the crops in various ways. The plant-parasitic nematodes can lead to severe yield losses. The extent of crop yield loss depends on the susceptibility of the variety or host tolerance, population density of the nematode and various environmental variables. However, no tool is available for the prediction of nematode population buildup in soil therefore it has been difficult to issue advisories for timely management of these pathogens. Here we developed a method to accurately predict the nematode population buildup in soil for its timely management. 
Methods: Nematode population index of a plant-parasitic nematode Tylenchorynchus was taken from two crops i.e. mung bean and crotalaria. The model was developed considering various weather variables to predict the population of the Tylenchorynchus in the fields of mung bean and crotalaria. Weather parameters such as maximum and minimum temperature, relative humidity, wind speed and sunshine hours were considered for developing the model for Tylenchorynchus population prediction. Stepwise regression method was applied to predict the nematode population. 
Result: The regression analysis between estimated and observed values of Tylenchorynchus population gave the R2 value as 0.98 for mung bean and 0.87 for crotalaria. Well timed prediction can help the growers to apply the required management practices to make it beneficial economically. This method can be extended to predict the population buildup of other serious nematode pests of crops.


Crotalaria Leguminous crops Mung bean Nematode Prediction model


  1. Chen, J., Ferris, H. (1999). The effects of nematode grazing on nitrogen mineralization during fungal decomposition of organic matter. Soil Biology and Biochemistry. 31: 1265-1279.
  2. Colagiero, M. and Ciancio, D.A. (2011). Climate changes and nematodes: Expected effects and perspectives for plant protection. Redia. 94: 113-118.
  3. Ehwaeti, M. and Elliott, M. and McNicol, J. and Phillips, Mark and Trudgill, David. (2000). Modeling nematode population growth and damage. Crop Protection - CROP PROT. 19: 739-745. 10.1016/S0261-2194(00)00098-3. 
  4. Evans, K., Trudgill, D.L., Webster, J.M. (1993). Plant Parasitic Nematodes in Temperate Agriculture. Wallingford, UK: CAB International.
  5. Ferris, H. (1976). Development of a Computer-Simulation Model for a Plant-Nematode System, Journal of Nematology. 8(3): 255-263.
  6. Ferris, H., Venette, R., van der Meulen, H. and Lau, S.S. (1998). Nitrogen mineralization by bacterial-feeding nematodes: verification and measurement. Plant and Soil. 203: 159-171. 
  7. Ingham, R.E., Trofymow, J.A., Ingham, E.R. and Coleman, D.C. (1985). Interactions of Bacteria, Fungi and their Nematode Grazers: Effects on Nutrient Cycling and Plant Growth. Ecological Monographs. 55: 119-140. 
  8. Luc, M., Bridge, J. and Sikora, R.A. (2005). Plant Parasitic Nematodes in Subtropical and Tropical Agriculture, 2nd edn. CAB International, Wallingford, UK.
  9. Rius J.E., Escobar C., Cabrera J., Vovlas A., Castillo P. (2017). Anatomical Alterations in Plant Tissues Induced by Plant-Parasitic Nematodes. Frontiers in Plant Science. 8: 1987. 
  10. Silva, J. and Hirschfeld, Mariaand Cares, Juvenil and Esteves, A. (2019). Land use, soil properties and climate variables influence the nematode communities in the Caatinga dry forest. Applied Soil Ecology. 150. 103474. 10.1016/j. apsoil.2019.103474.
  11. Stirling G.R. (2014). Biological products for nematode management. In: Stirlling G (Ed) Biological control of plant-parasitic nematodes. CABI Publishing, CAB International, Wallingford. 342-389.
  12. Stirling G.R., Stirling A.M., Walter D.E. (2017). The Mesostigmatid Mite Protogamasellus mica, an Effective Predator of Free- Living and Plant-Parasitic Nematodes. J. Nematol. 49(3): 327-333. 
  13. Topaloviæ, O., Hussain, M., and Heuer, H. (2020). Plants and Associated Soil Microbiota Cooperatively Suppress Plant-Parasitic Nematodes. Frontiers in Microbiology. 11: 313. 
  14. Viscardi, T., Brzeski, M.W. (1992). Simulation model for the population dynamics of the nematode Paratylenchusbukowinensis (Nematoda: Tylenchulidae), Agriculture, Ecosystems and Environment. 38(3): 153-157. https://doi.org/10.1016/0167-8809(92)90140-7.
  15. Yeates, G.W., Wardle, D.A. (1996). Nematodes as predators and prey: relationships to biological control and soil processes. Pedobiologia. 40: 43-50.

Global Footprints