Effect of vermicompost application on the movement of second stage juveniles of the root-knot nematode Meloidogyne incognita in soil

Document Type : Short Article

Authors

1 Department of Soil Sicence, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran

2 Department of Plant Protection, Bu-Ali Sina University

3 Department of Soil Science, Faculty of Agriculture, Malayer University, Malayer, Iran

Abstract

The movement of plant-parasitic nematodes in soil is influenced by the soil environment and the microorganisms present in it, and soil conditions affect disease incident. The objective of this study was to investigate the movement of second-stage juveniles of the root-knot nematode Meloidogyne incognita 18 weeks after incubation with vermicompost, under constant saturation flow 24 and 72 hours after addition of the nematodes. The test was conducted as a factorial experiment with a randomized complete block design in three replicates. The nematodes were extracted by the tray method and then counted. The results showed that 24 hours after nematode injection into the control soil, the highest population of nematodes was observed at the injection site and the nematodes moved more toward the water flow. At 72 hours after injection, a higher percentage of them moved and the nematode population decreased at the injection site (1.52%). Also, in the soil treated with vermicompost for 18 weeks, nematodes moved both in and against the direction of water flow 24 hours after injection and were distributed in all points of the column. The highest rate of nematode movement was observed at point (-4) at 14%. At 72 hours after injection, the nematodes were also very evenly distributed throughout the column and the number of nematodes that entered the wastewater was higher.

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Ahmad Abadi Z., Ghajar Sepanlo M. and Rahimi Alashti S. 2011. Effect of vermicompost on physical and chemical properties of soil. Journal of Water and Soil Science 58: 125–137. (In Persian).
Fujimoto T., Hasegawa S., Otobe K. and Mizukubo T. 2010. The effect of soil water flow and soil properties on the motility of second-stage juveniles of the root-knot nematode (Meloidogyne incognita). Soil Biology and Biochemistry 42(7): 1065–1072.
Fujimoto T., Hasegawa S., Otobe K. and Mizukubo T. 2009. Effect of water flow on the mobility of the root-knot nematode Meloidogyne incognita in columns filled with glass beads, sand or andisol. Applied Soil Ecology 43: 200–205.
Hassink J., Bouwman L. A., Zwart K. B. and Brussaard L. 1993. Relationships between habitable pore space, soil biota and mineralization rates in grassland soils. Soil Biology and Biochemistry 25(1): 47–55.
Melakeberhan H., Dey J., Baligar V. C. and Carter Jr T. E. 2004. Effect of soil pH on the pathogenesis of Heterodera glycines and Meloidogyne incognita on Glycine max genotypes. Nematology 6(4): 585–592.
Oka Y. 2010. Mechanisms of nematode suppression by organic soil amendments-a review. Applied Soil Ecology 44(2): 101–115.
Pansu M. and Gautheyrou J. 2006. Handbook of soil analysis. Mineralogical, organic and inorganic methods. Springer, The Netherlands. 993 p.
Tejada M., Hernandez M. T. and Garcia C. 2006. Application of two organic amendments on soil restoration: Effects on the soil biological properties. Journal of Environment Quality (35): 1010–1017.
Towson A. J. and Apt W. J. 1983. Effect of soil water potential on survival of Meloidogyne javanica in fallow soil. Journal of Nematology 15(1): 110–115.
Wallace H. R. 1968. The dynamics of nematode movement. Annual Review of Phytopathology 6(1): 91–114.
Whitehead A. G. and Hemming J. R. 1965. A comparison of some quantitative methods of extracting small vermiform nematodes from soil. Annals of Applied Biology 55(1): 25–38.
Wyss U. and Zunke U. 1998. Observations on the behavior of second juveniles of Heterodera schachtii inside host roots. Revue de Nématologie 9: 153–165.