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Integrated Management of Stem Rot in Sesame

M. Z. Rahman
Plant Pathology Division, BARI

S. Mowlick
Plant Pathology Division, BARI

M. H. Rashid
Plant Pathology Division, BARI

Abstract/ Executive Summary:

The experiment was conducted at RARS, Rahmatpur, Barisal during 2013-2014. Management of stem rot disease was conducted by seed treatment with Provax-200(0.2%) and Bavistin (0.1%) + Dithane M-45(0.2%), Natibo (0.2%), Ridomil gold (0.2%), Secure (0.2%) Score (0.1%), Aimstar Top (0.1%) , Neoban (0.1%), Neem leaf extract (1:1) and Trichoderma harzanium under natural condition .From this experiment, it was found that seed treatment with Provax-200(0.2%) and two sprays of Bavistin (0.1%) + Dithane M-45(0.2%) after 30 DAS and 45 DAS effectively control the stem rot disease of sesame.

Keywords: Stem rot, Sesame, Ridomil gold, Provax-200

Location: RARS, Rahmatpur, Barisal

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Diseases, Sesame

Objectives:

The present investigation has been undertaken to manage the stem rot disease of .Sesame

Methodology:

The experiment was conducted at Regional Agricultural Research Station, Rahmatpur, Barisal during 2013-2014. The design was RCB having 3 replications. Variety was used BARI Til-4. Sizes of the plots were 5.0m x 2.25m. The experiment was conducted under natural infection condition. Recommended doses of fertilizers (Urea 125 kg, TSP 150 kg, MoP 50kg, Zypsum 110 kg and Zincsulphate 5 kg, Boric acid 10 kg per hectare) were used. The ten treatments including control were viz. Bavistin DF (Carbendazim) @ 0.1% + Dithane M-45(Mancozeb) @ 0.2%, Natibo 75 WG (Tebuconazole+Trofloxystobin) @ 0.2%, Ridomil gold MZ 68 WG (Mancozeb + Metalexyl) @ 0.2%, Secure 600 WG (Fenamidone+ Mancozeb) @ 0.1%, Score (Difenoconazole) @ 0.1%, Aimstar Top . 325 SC (Azoxystrobin +Difenoconazole) @ 0.1%, Neoben 72 WP (Mancozeb + Metalexyl) @ 0.1% , Neem leaf extract (1:1) and Trichoderma harzanium. Two sprays were given at an interval of 30 and 45 days after sowing of seeds. In general the seeds were treated with Provax- 200 WP (0.2 %) except control, Neem leaf extract and Trichoderma harzanium. Disease data were recorded before every spray using 0-4 rating scale given by Rahman and Rashid et al (2008). Percent disease index (PDI) was computed from the final data, percent disease Data (PDI) was computed on the basis of the formula according to Krishna Prasad et al., 1979 described as below:

Σ (Class rating × class frequency)

PDI = ------------------------------------------------------------------------------ X 100

Total number of leaves counted × maximum rating value

Source of Information: Annual Research Report, Plant Pathology Division, BARI--2013-14

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among the treatments Provax-200 WP (0.2%) + Bavistin (0.1%) + Dithane M-45(0.2%) showed the lowest PDI (11.00 %) in stem rot disease management and highest in control plot (48.92 %). Statistically similar PDI (14.15 %) was also observed in Provax-200 (0.2%) + Secure (0.1%) treated plots. The highest yield (1239 kg/ha), plant population /m² (63.02) and maximum number of pods per plant (80) was observed in Provax-200 (0.2%) + Bavistin (0.1%) + Dithane M-45(0.2%) treated plots. The lowest yield (792 kg/ha), plant population /m² (33.10) and maximum number of pods per plant (67.07) was obtained from control plots.

It may be concluded that seed treatment with Provax-200 @ 0.2% and two sprays of Bavistin (0.1%) + Dithane M-45(0.2%) at 30 DAS and 45 DAS can effectively control the stem rot disease of Sesame

Knowledge Management: Report/Proceedings