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Studies on the myrothecium leaf spot disease of cotton caused by myrothecium roridum tode exFr
KrishiKosh
View Archive Info| Field | Value | |
| Title |
Studies on the myrothecium leaf spot disease of cotton caused by myrothecium roridum tode exFr
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| Creator |
Vinod Kumar
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| Contributor |
Beniwal, Jagdish
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| Subject |
Cotton myrothecium leaf spot disease, Myrothecium roridum (M.roridum), Fungicides, Non-conventional chemicals
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| Description |
Studies on Myrothecium leaf spot disease and management through fungicides and nonconventional chemicals were carried out with M. roridum causing Myrothecium leaf spot of cotton. In vitro studies revealed that the maximum disease development was recorded at 25˚C± 1 in both Bt cotton hybrid MRC -6304 Bt and non Bt cotton H-1098 (64.70 & 40.70% respectively). Under screen house conditions pre and post inoculation moist period studies revealed that minimum post inoculation moist period required for initiation of disease was 12 hours and maximum disease infection was found at 48 hours before and after inoculation. However, pre inoculation moist period resulted in increased infection but was not as effective as post inoculation period for disease development under screen house condition. In vitro studies with fungicides and non-conventional chemicals indicated that propiconazole and cobalt chloride at 100 and 1000ppm concentration gave 100 and 87.9% growth inhibition of M. roridum respectively. Foliar spray of propiconazole and salicylic acid at 0.1% and 0.01% concentrateion effective in controls disease significantly found7.60 and 23.95% disease intensity respectively over check in Bt cotton hybrid MRC -6304 Bt and under field conditions. Two spray of fungicides and non– conventional chemicals significantly increased the seed cotton yield and its quality parameters. Fifty seven germplasm lines were found highly resistant to Myrothecium leaf spot disease which can be further used in breeding disease resistant programme. |
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| Date |
2016-10-05T09:50:50Z
2016-10-05T09:50:50Z 2014 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/79952
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| Language |
en
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| Format |
application/pdf
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| Publisher |
CCSHAU
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