• Ananthakrishna Tantry M. S.
• Sadanand M. Yamakanamardi

Soil samples of nine crop fields having nine different plants, viz., Moru alba (Mulberry), Phaseolus vulgaris (Beans), Solanum lycopersicum (Tomato), Musa balbiciana (Banana), Manikara zapota (Sapota), Vaccinium corymbosum (Blueberry), Saccharum officinarum (Sugarcane), Ricinus communis (Castor) and Annona squamosa (Custard apple) were quantitatively and qualitatively analysed for plant-parasitic nematodes. Modified Cobb’s sieving and decanting; and Baermann’s funnel techniques were employed to efficiently extract the nematodes from rhizosphere soil samples. Soil temperature, soil pH and soil conductivity were also determined from the rhizosphere soil samples collected from each field to elucidate the relationship with nematode abundance. 25 nematode genera were reported in the present study. Out of 34 major phytonematodes reported from India, Hemicycliophora spp. was found in high frequency, Aphelenchoides spp. was showing the highest prominence value and density, whereas, it is noteworthy to record complete absence of Belanolaimus, Criconemoides, Paratylenchus, Hoplolaimus, Heterodera, Globodera, Dolichodorus, Naccobus and Anguina were completely absent. Shannon index and Simpson’s Diversity index values were found to be highest for the soil sample having Sugarcane crop. In contrast, the soil sample having Castor crop was showing the lowest values. The Bivariate Pearson’s correlation revealed that the abundance of nematodes showed positive correlation with the Soil pH and Soil conductivity. The results have been discussed with the present and past literature.

Plant-parasitic nematodes; Mysuru; Mulberry; Beans; Tomato; Banana; Sapota; Blueberry; Sugarcane; Castor; Custard apple; Cobb's sieving and decanting; Baermann's funnel method; Soil pH; Soil conductivity; Soil temperature.

"Plant-parasitic Nematode Diversity And Abundance In Rhizosphere Soil Of Commercially Important Crops In Mysuru Taluk, Karnataka State, India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.160-166, February-2019, Available :http://www.jetir.org/papers/JETIR1902C29.pdf

"Plant-parasitic Nematode Diversity And Abundance In Rhizosphere Soil Of Commercially Important Crops In Mysuru Taluk, Karnataka State, India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp160-166, February-2019, Available at : http://www.jetir.org/papers/JETIR1902C29.pdf