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Survey for Alternate Weed Hosts of Rice Root-Knot Nematode, Meloidogyne graminicola Associated with Rice Crops in Haryana, India

S.S. Mann, Rohit Kumar, Rubal Kamboj, Praveen, Nitin Jangra, Vinod Kumar

International Journal of Plant & Soil Science · pp. 36–47 · Published 22 Jan 2024

10.9734/ijpss/2024/v36i24361

Abstract

Rice root-knot nematode, Meloidogyne graminicola is one of the most serious nematode pest associated with rice throughout the world. With other species of root-knot nematode, M. graminicola can also infect wide range of weed flora which is commonly grown in or near the rice field. To study the alternate weed hosts of M. graminicola a survey was conducted in the major rice growing blocks of Fatehabad and Sirsa districts of Haryana during Kharif season 2022. A total of 726 samples were collected from rice fields, both from transplanted (TR) and direct seeded rice (DSR) from Phoolan, Bharpur, Ratta Khera, and Jandwala Sotter villages of Fatehabad and Bahauddin and Sikanderpur, Dhottar, Ding and Chopta villages of Sirsa. Out of which 353 samples were found free from nematode infestation while 373 samples (209 from DSR and 164 from TR)were found infested. The juveniles and galls were recorded ranging from 4-190 on the roots of different weed plants. Hence, it is concluded from the present investigation, that nematodes favor more DSR and its weed flora than TR for infection and survival.

Alternate weed host Meloidogyne graminicola rice survey

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