EPIDEMIOLOGICAL STUDIES ON ALTERNARIA BLIGHT, WHITE RUST AND POWDERY MILDEW OF INDIAN MUSTARD (Brassica juncea (L.) Czern. and Coss.)

Simple item page
dc.contributor.advisorNegi, H. S.
dc.contributor.authorVerma, Pradeep Kumar
dc.date.accessioned2022-02-01T07:31:59Z
dc.date.available2022-02-01T07:31:59Z
dc.date.issued2021-10-25
dc.description.abstractThe present investigation entitled “Epidemiological studies on Alternaria blight, white rust and powdery mildew of Indian mustard (Brassica juncea (L.) Czern. and Coss.) was carried out in the Department of Plant Pathology, College of Agriculture, Banda University of Agriculture and Technology, Banda, UP during 2019- 2021. Disease survey was conducted in Banda and Hamirpur districts of Bundelkhand region of Uttar Pradesh in which average PDI of Alternaria blight, white rust and powdery mildew were 27.31 per cent, 30.39 per cent and 53.33 per cent, respectively in villages surveyed in Hamirpur district whereas, it was 28.0 per cent, 29.98 per cent and 59.92 per cent, respectively in villages surveyed in Banda district. In epidemiological studies, favourable weather conditions of maximum temperature ranging between 21.71-29.48°C, minimum temperature ranging 9.4 -14.0°C, maximum RH >90% upto 16th WAS and minimum RH between 36.14 – 56.42% with 12.30 mm rainfall were recorded during progression of Alternaria blight. Favourable weather conditions of maximum temperature ranging 21.71-29.48°C, minimum temperature ranging 9.4-14.0°C, maximum RH >90% upto 16th WAS and minimum RH between 36.14-56.42% with 12.30 mm rainfall were recorded during progression of white rust. Favourable weather conditions of maximum temperature ranging between 25.28-29.48°C, minimum temperature ranging 11.57-14.0°C, maximum RH of 80.42-91.25% and minimum RH between 36.14-48.57% with 12.30 mm rainfall during span of two weeks were recorded during progression of powdery mildew. A significantly positive correlation of per cent disease index of Alternaria blight, white rust and powdery mildew was reported with maximum and minimum temperature whereas, it was significantly and negatively correlated with maximum and minimum relative humidity however, it was non-significant and negatively correlated with rainfall in Indian mustard varieties Ganga, Varuna, Giriraj and RH-0749. Multiple regression equations explained that 98, 99, 98 and 97 per cent Alternaria blight development, 98, 97, 98 and 97 per cent white rust development, 96, 96, 95 and 96 per cent powdery mildew development was influenced by the maximum temperature, minimum temperature, maximum relative humidity, minimum relative humidity and rainfall in varieties Ganga, Varuna, Giriraj and RH0749, respectively. In effect of different dates of sowing on PDI of the Alternaria blight, lowest mean PDI of the disease (11.63% and 13.11%) was recorded from the 1stsown plots on 27th October whereas, the highest mean PDI of 20.83% and 21.01% was recorded from 4th sowing on 27th November in variety Ganga and Varuna, respectively. Lowest mean PDI of white rust (8.57% and 8.79%) was also recorded from the 1st sown plots whereas, the highest mean PDI of 17.82% and 18.74% was recorded from 4th sowing in variety Ganga and Varuna, respectively. Lowest mean PDI of the powdery mildew (20.43% and 19.01%) was also recorded from the 1st sown plots and the highest mean PDI of 50.79% and 49.34% was recorded from 4th sowing in variety Ganga and Varuna, respectively. Maximum average oilseed yield of 20.52 q/ha was obtained from mustard crops sown on 1st date i.e. 27th October which significantly reduced with the delay in sowing and was minimum in 4th sowing (13.28 q/ha). Minimum AUDPC of 716.35 and 802.38 was resulted in 1st sowing whereas, maximum AUDPC of 1330.70 and 1343.42 was resulted in 4th sowing for Alternaria blight in Ganga and Varuna, respectively. Minimum AUDPC of 527.64 and 533.24 was resulted in 1st sowing whereas, maximum AUDPC of 1125.52 and 1189.97 was resulted in 4th sowing for white rust in Ganga and Varuna, respectively. Lowest AUDPC of 988.96 and 920.98 was resulted in 1st sowing whereas, maximum AUDPC of 2617.16 and 2543.64 was resulted in 4th sowing for powdery mildew in Ganga and Varuna, respectively.en_US
dc.identifier.citationPradeep Kumar Verma 2021. EPIDEMIOLOGICAL STUDIES ON ALTERNARIA BLIGHT, WHITE RUST AND POWDERY MILDEW OF INDIAN MUSTARD (Brassica juncea (L.) Czern. and Coss.). M.Sc. Thesis. 84p.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810181463
dc.language.isoEnglishen_US
dc.pages1-84,VIen_US
dc.publisherBanda University of Agriculture & Technology, Banda-210001, Uttar Pradesh, Indiaen_US
dc.subPlant Pathologyen_US
dc.themeAcademic Researchen_US
dc.these.typeM.Scen_US
dc.titleEPIDEMIOLOGICAL STUDIES ON ALTERNARIA BLIGHT, WHITE RUST AND POWDERY MILDEW OF INDIAN MUSTARD (Brassica juncea (L.) Czern. and Coss.)en_US
dc.typeThesisen_US
Files
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Thesis
Load more