Exploring potential of new generation fungicides as seed dresser in combating early infection of Macrophomina phaseolina in Soybean

Abstract Charcoal rot caused by Macrophomina phaseolina (Tassi) Goid can cause significant grain yield losses in soybean. Current study aimed to explore the potentiality of new molecules in minimizing the early infection of M. phaseolina in soybean. In preliminary in vitro testing, Penflufen 13.28% + Trifloxystrobin 13.28% FS (100%), Tebuconazole 10% + Sulphur 65% WG (91.40%), Carboxin 37.5% + Thiram 37.5% DS (90.00%) and Thiophanate Methyl 45% + Pyraclostrobin 5% FS (86.90%) were found highly efficient in inhibiting mycelial development of the pathogen at 50 ppm. These molecules along with Trichoderma harzianum were also evaluated as seed dressers in incurving M. phaseolina infection. In the 1st experiment (sick pot method), the lowest significant pre and post-emergence mortality was recorded from seed treatment with Penflufen13.28% + Trifloxystrobin 13.28% FS 1.5 ml/kg seed (13.88 and 12.79% in JS 95-60 and DSb 21, respectively) followed by Thiophanate Methyl 45% + Pyraclostrobin 5% FS @ 1.5 ml/kg seed than inoculated untreated (44.44 and 58.73% in JS 95-60 and DSb 21, respectively) in M. phaseolina infested soil (24 g/kg soil). Pre- and post-emergence mortality was significantly higher in infested soil than in the non-infested. In the 2nd experiment (cut stem inoculation technique), all the fungicidal treatments exhibited a significant reduction in necrotic lesion development on the stem. The area under lesion progression curve (AULPC) was minimum in the plants that emerged from seeds treated with Penflufen13.28% + Trifloxystrobin 13.28% FS @ 1.5 ml/kg seed (92.97) in comparison to untreated seeds’ plants (237.03). In the 3rd experiment (paper towel), the lowest significant root damage score was recorded in the plants emerged from seed treatment of T. harzianum @ 10 g/kg seed followed by Penflufen 13.28% + Trifloxystrobin 13.28% FS @ 1.5 ml/kg. The results indicated that seed treatment with systemic fungicides reduced M. phaseolina infection in the early stage of soybean and among the fungicides tested, Penflufen13.28% + Trifloxystrobin 13.28% FS @ 1.5 ml/kg seed was the best for the same..

Medienart:	E-Artikel

Erscheinungsjahr:	2023
Erschienen:	2023

Enthalten in:	Zur Gesamtaufnahme - volume:76
Enthalten in:	Indian phytopathology - 76(2023), 4 vom: 25. Nov., Seite 1045-1053

Sprache:	Englisch

Beteiligte Personen:	Sagarika, Medari [VerfasserIn] Amrate, Pawan K. [VerfasserIn] Yadav, V. K. [VerfasserIn] Shrivastava, M. K. [VerfasserIn]

Links:	Volltext [lizenzpflichtig]

Themen:	Fungicides Seed treatment Soybean

Anmerkungen:	© Indian Phytopathological Society 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

doi:	10.1007/s42360-023-00680-3

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	SPR054095425