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Naik, M. k.
- Study of Different Temperature Levels on Radial Growth and Dry Mycelial Weight of Trichoderma Spp. Isolated from Red Gram Based Conservation Agriculture Ecosystem
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Authors
Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, Rachipur (karnataka), IN
2 Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi, Gulbarga (karnataka), IN
1 Department of Plant Pathology, University of Agricultural Sciences, Rachipur (karnataka), IN
2 Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayanagudi, Gulbarga (karnataka), IN
Source
International Journal of Plant Protection, Vol 7, No 2 (2014), Pagination: 424-428Abstract
Different temperatures and pH were taken to observe the radial growth and dry mycelial weight of Trichoderma spp. The radial growth of Trichoderma was maximum for all the four species i.e., T. harzianum, T. viride, T. hamatum and T. virens (90, 82, 91.3 and 85mm) at 30oC, where it was minimum in four species at 40oC (30.70, 35, 22.53 and 20 mm), respectively and dry mycelium of T. harzianum (1.05 mg), T. viride (1.83 mg), T. hamatum (2.42 mg) and T. virens (0.82 mg) were maximum at 25oC whereas, the radial growth of four isolates were maximum at pH 6 (90, 88, 92 and 91mm) in T. harzianum, T. viride, T. hamatum and T. virens, respectively. At neutral pH, radial growth of T. harzianum (89 mm), T. viride (91 mm), T. hamatum (89 mm) and T. virens (87 mm) was minimum and dry mycelium weight of T. harzianum (729 mg), T. viride (1639.67 mg), T. hamatum (798 mg) and T. virens (583.67 mg) were maximum at pH 8. It was minimum at pH 4 for T. harzianum (120 mg), T. viride (257 mg), T. hamatum (154 mg) and T. virens (262.67 mg).Keywords
Trichoderma Spp., Radial Growth, Dry Mycelia, Temperature
- Estimation of Yield Loss in Sunflower Due to New Sunflower Leaf Curl Virus Disease at Different Stages of Crop Growth
Abstract Views :193 |
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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.- Evaluation of Fungicides, Botanicals and Bio-Agents against Sheath Blight of Rice Caused by Rhizoctonia solani Kuhn under Irrigated Eco-System
Abstract Views :218 |
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Authors
P. Nagaraju
1,
M. K. Naik
2
Affiliations
1 Department of Plant Pathology, AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), IN
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
1 Department of Plant Pathology, AICRP on Groundnut, University of Agricultural Sciences, Dharwad (Karnataka), IN
2 Department of Plant Pathology, University of Agricultural Sciences, Raichur (Karnataka), IN
Source
International Journal of Plant Protection, Vol 10, No 2 (2017), Pagination: 247-251Abstract
The study was conducted to know the field efficacy of different fungicides, botanicals and bio-agents against sheath blight of rice under irrigated eco-system. Among the different treatments, the least per cent disease index (17.00 PDI) was recorded in Hexaconazole (Contaf 5 EC) with the highest grain yield (81.02 q/ha). This was followed by Validamycin 3L (21.60 PDI and grain yield 73.83 q/ha) and Carbendazim 50 WP (24.80 PDI and grain yield 69.21 q/ha). Among the botanicals and bio-agents, the least disease incidence was noticed in Tricure (Azadirachtin @ 0.03%) with 30.50 PDI and grain yield of 61.43 q per ha and P. fluorescens (Pfr-l) with 36.20 PDI with a grain yield of 54.02 q per ha. The C:B ratio was high in Hexaconazole (1:2.5) followed by Propiconazole (1:2.3).Keywords
Sheath Blight, Rice, Rhizoctonia solani, Hexaconazole, Botanicals, Bio-Agents.References
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