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Sunkad, Gururaj
- Estimation of Yield Loss in Sunflower Due to New Sunflower Leaf Curl Virus Disease at Different Stages of Crop Growth
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Authors
Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, RAICHUR (KARNATAKA), IN
2 Department of Plant Pathology, University of Agricultural Sciences, DHARWAD (KARNATAKA), IN
1 Department of Plant Pathology, University of Agricultural Sciences, RAICHUR (KARNATAKA), IN
2 Department of Plant Pathology, University of Agricultural Sciences, DHARWAD (KARNATAKA), IN
Source
International Journal of Plant Protection, Vol 8, No 1 (2015), Pagination: 138-141Abstract
An experiment was carried out to assess the crop loss due to sunflower leaf curl virus (SuLCV) disease. The crop loss assessment in terms of growth and yield components was recorded at first appearance of symptoms of SuLCV at 30 days to 90 days during the crop growth. The SuLCV disease infection in sunflower significantly affected the plant height (72.60 to 157cm), size of the head (8.60 to 18.78cm), 100 seed weight (2.20 to 6.32g), oil content (31.24% to 38.26%), and weight of seeds/10 heads (77.20 to 372.2g) as compared to the healthy control plants. In the plants, first appearance of symptoms at 30 DAS was recorded the seed yield loss of 79.25 per cent.Keywords
Sunflower, SuLCV, Yield Loss Estimation, Yield Components.
- Spatial Variability of Mungbean Yellow Mosaic Virus (MYMV) in North Eastern Karnataka
Abstract Views :171 |
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Authors
Meghashree Meti
1,
Mallikarjun Kenganal
1,
Gururaj Sunkad
1,
D. S. Aswathanarayana
1,
U. K. Shanwad
2
Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
2 Department of Agronomy, University of Agricultural Sciences, Raichur (Karnataka), IN
1 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
2 Department of Agronomy, University of Agricultural Sciences, Raichur (Karnataka), IN
Source
International Journal of Plant Protection, Vol 10, No 2 (2017), Pagination: 420-428Abstract
Mungbean a protein rich legume has high demand but, supply is hindered due to poor production and productivity due to mungbean yellow mosaic virus (MYMV) disease. The North Eastern Karnataka being the pulse bowl of the state annually suffers from MYMV incidence. In order to control this whitefly transmitted virus, knowledge and information about its distribution across the region is essential to formulate the strategies of management. In the present study a roving survey was undertaken to know the incidence and present status of MYMV in mungbean among the six districts of North Eastern Karnataka (NEK) region viz., Bellary, Bidar, Koppal, Kalaburgi, Raichur and Yadgir during Kharif 2016, when the crop was at 30 to 45 days old. The GPS position and MYMV incidence in each location were recorded and used to develop GIS map to know the spatial distribution of MYMV in different talukas of six districts. The results showed varied incidence of MYMV across many locations. Highest disease incidence was recorded at Koppal district with 33.33 per cent followed by Bellary (21.45 %), Raichur (19.70 %), Kalaburgi (17.44 %) and Yadgir (15.76 %) districts. The least disease incidence was noticed at Bidar district (5.66%). Higher MYMV incidence in Koppal was mainly due to favourable weather for multiplication and survival of whitefly population which spreads the virus. The virus inoculum in summer crop and weed hosts were found acting as source of inoculum. Findings of the study revealed that higher incidence in Koppal would provide suitable disease pressure for screening of genotypes developed against the MYMV infection and also develop management strategies in each district based on the disease incidences recorded.Keywords
MYMV, Mungbean, Kharif, PDI (% Disease Incidence), Survey, NEK, GPS.References
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- Standardization of Inoculation Technique to Identify the Sources of Resistance against Stem and Pod Rot of Groundnut
Abstract Views :417 |
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Authors
Poornima
1,
Gururaj Sunkad
2
Affiliations
1 Department of Plant Pathology, AICRP (Sunflower), MARS, Raichur (Karnataka), IN
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
1 Department of Plant Pathology, AICRP (Sunflower), MARS, Raichur (Karnataka), IN
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
Source
International Journal of Plant Protection, Vol 13, No 1 (2020), Pagination: 58-61Abstract
A technique was standardized to screen for resistance to stem rot (Sclerotium rolfsii Sacc.) in groundnut (Arachis hypogaea L.). A total of seven different inoculation techniques were screened by using susceptible genotype TMV-2. The techniques involved inoculation of 10 day old groundnut plants raised in pots by spreading mycelial propagules of S. rolfsii grown on sorghum grain medium (SGM) on soil surface, Inoculum spread on the soil surface and covered with groundnut leaf debris, Inoculum placed around the collar region, Inoculum placed around the collar region and covered with groundnut leaf debris, Inoculum mixed in the soil, Inoculum mixed in the soil and covered with groundnut leaf debris, Agar disc method. Among these techniques inoculum spread on the soil surface and covered with groundnut leaf debris was found to be most efficient in getting highest per cent incidence of stem rot (84.86%) and pod rot (70.48%).Keywords
Groundnut, Stem, Pod Rot, S.rolfsii.References
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