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Integrated Approaches for the Management of Rice Root-knot Nematode, Meloidogyne graminicola in Rice

Indian Agricultural Research Journals

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Title Integrated Approaches for the Management of Rice Root-knot Nematode, Meloidogyne graminicola in Rice
 
Creator KUMAR, VINOD
KUMAR, ANIL
MANN , S.S.
KAMBOJ, RUBAL
 
Subject Azotobacter chroococcum, Meloidogyne graminicola, neem cake, Oryza sativa, Pseudomonas fluorescens, Trichoderma viride
 
Description The experiments were carried out in the lab, screen-house and field to manage rice root-knot nematode, Meloidogyne graminicola, in rice. In lab assays, rhizobacterial strains and phytotherapeutic substances caused mortality of M. graminicola juveniles at all dilutions, i.e., 1:5, 1:10, 1:20, 1:40 and 1:80 at 1, 2, 4, 6 and 8 days. Among the rhizobacterial strains and plant extracts, the maximum juvenile mortality was observed in Azotobacter chroococcum HT 54 (65.2%), which was at par with the aqueous extracts of Azadirachta indica (61.8%). In nursery treatments in pots, seed treatment with A. chroococcum HT 54 and application of neem cake @ 50 g/pot showed a high biocontrol efficacy against M. graminicola, promoted plant growth of rice and significantly suppressed finalnematode population (147 J2/200 cc soil) as compared to untreated check (923 J2/200 cc soil). In the main field experiment, maximum plant height (124.7 cm) and grain yield (51.2 q/ha) were recorded in the treatments where two deep summer ploughings (10-day interval) and seedlings treated with A. chroococcum HT 54 + neem cake @ 50 g/pot was given. Combination of the treated nursery (A. chroococcum HT 54 + neem cake @ 50 g/pot) with deep summer ploughing significantly reduced the number of galls (29.6), no.of eggs per plant (3551) and final nematode population (138 J2/200 cc soil).
 
Publisher Nematological Society of India
 
Date 2024-09-08
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJN/article/view/156141
 
Source Indian Journal of Nematology; Vol. 53 No. 2 (2023): Indian Journal of Nematology; 131-141
0974-4444
0303-6960
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJN/article/view/156141/55742
 
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