PHYTONEMATODES ASSOCIATED WITH BLACK PEPPER (Piper nigrum L.) IN CHICKMAGALUR DISTRICT, KARNATAKA

N. UMASHANKAR KUMAR¹*, A. NATARAJA², C.P. MANJULA³, R. REKHA⁴, H. MANJUNATHA⁵, N.G. RAVICHANDRA^6
1Department of Plant Pathology, College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
²Department of Horticulture, College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
³Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
⁴Department of Horticulture, College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
⁵Department of Plant Pathology, College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
⁶Department of Plant Pathology, College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
* Corresponding Author : umapathologist@gmail.com

Received : 01-11-2018     Accepted : 12-11-2018     Published : 15-11-2018
Volume : 10     Issue : 21       Pages : 7477 - 7482
Int J Agr Sci 10.21 (2018):7477-7482

Keywords : Black pepper, Plant parasitic nematodes, Chikkamagalur, Radopholus similis
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to College of Agriculture, Hassan, 573225, University of Agricultural Sciences, Bengaluru, 560065, Karnataka, India
Author Contribution : All authors equally contributed

Black pepper is known to attack by various plat parasitic nematodes and causing wilt complex. Soil and root samples were collected from all the places during survey and were brought to the laboratory for analysis. A total of five major genera of plant parasitic nematodes were recorded from rhizosphere of black pepper plantations of three taluks of black pepper growing areas of Chikkamagalur district. Plant parasitic nematodes viz., Radopholus similis, Meloidogyne incognita, Pratylenchus coffeae, Helicotylenchus multicinctus, Rotylenchulus reniformis and other parasitic and free living nematodes were recorded. In Chickmagalur district, five taluks were surveyed for nematode occurrence. Among them, Mudigere taluk recorded the highest number of nematode population of 805, 30 per 200 cc soil and 5 g roots followed by Chickmagalur with 27,598 nematodes per 200 cc soil and 5 g roots. Lowest nematode population was recorded in Koppa taluk with 310, 19 nematodes per 200 cc soil and 5 g roots followed by N. R. Pura taluk with 22, 140 nematodes per 200 cc soil and 5 g roots. The R. similis was a predominant parasitic nematode of black pepper with highest prominence values in all the taluks surveyed. In Chickmagalur taluk highest prominence value was observed in Mudigere taluk (1412) followed by Chickmagalur (1210) and Sringeri (1208). Whereas lowest prominence value was observed in Koppa (883.40) followed by N.R. Pura (917.30) respectively

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