Papers by Rupert Anand Yumlembam
Bacterial Diseases of Cash Crops
Bacterial Diseases of Crop Plants
Efforts Made and Success Stories
Bacterial Diseases of Crop Plants, 2016
Bacterial Diseases in Spice Crops
Bacterial Diseases of Crop Plants, 2016
Journal of Pharmacognosy and Phytochemistry, 2017
Tomato (Lycopersicon esculentum Mill.), an important commercial vegetable of the world, is suscep... more Tomato (Lycopersicon esculentum Mill.), an important commercial vegetable of the world, is susceptible to early blight, a devastating fungal (Alternaria solani sp & Alternaria alternata sp) disease of tomato in India and elsewhere in the world. Currently, sanitation, long crop rotation, and routine application of fungicides are the most common disease control measures. The fungicides used for the management of Alternaria leaf blight in Satara district for the management of this disease were Dithane-M-45, Blitox, Bavistin, Captaf and Score. However, the fungus causing Alternaria leaf blight seems to have developed resistance against Bavistin and Captaf. Therefore, fungicides other than these two fungicide must be recommended on the taluka which have already developed resistance against these fungus.
Journal of Pharmacognosy and Phytochemistry, 2017
The fungicide resistance isolates in Alternaria leaf blight pathogen on tomato crop were isolated... more The fungicide resistance isolates in Alternaria leaf blight pathogen on tomato crop were isolated from 10 districts of Maharashtra against eight fungicides namely Dithane-M-45, Blitox, Kavach, Bavistin, Captaf, Nativo, Ridomil and Score. The percentage disease intensity (PDI) of after 7th day of inoculation shows that the Kavach and Nativo resistant isolate induced the maximum PDI of 21.33 and 20.44 per cent. The minimum PDI was induced by Dithane-M-45 resistant isolates with the PDI of 14.67 per cent which was followed by Blitox with PDI of 16.89 per cent. The Bavistin resistant isolate had developed cross resistance isolate to all seven other above fungicide applied in the tomato field. The Captaf resistant isolate had shown cross resistant to all other fungicide accept Dithane-M-45.The development of fungicide resistance and cross resistance to other fungicides has a serious consequence in the management of this disease in Western Maharashtra.
Sanitary and Phytosanitary Measures Agreement
Bacterial Pathogens of Phytosanitary Risk in International Trade of Seed and Planting Stock
Bacterial Diseases of Crop Plants, 2016
Bacterial Diseases of Forest Trees
Bacterial Diseases of Vegetable Crops
Bacterial Diseases of Crop Plants, 2016
Bacterial Diseases of Pulse Crops
Integrated Management of Anthracnose of Chilli Caused by Colletotrichum Capsici in West Bengal Condition
Chilli is a significant source of income making in India, the world’s single largest producer and... more Chilli is a significant source of income making in India, the world’s single largest producer and exporter to the USA, Canada, UK, Saudi Arabia, Singapore, Malaysia, Germany and many other countries across the world (Ashwini and Srividya, 2014). The sustainability of chilli-based agriculture is threatened by a number of factors. Anthracnose disease is a major problem in India and one of the most significant economic constraints to chilli production worldwide, especially in tropical and subtropical regions (Than et al., 2008). Hegde et al (2002) determined the in vitro efficacy of 3 triazole fungicides, i.e. hexaconazole (0.1%), propiconazole (0.1%) and triadimefon (0.1%), against the fruit rot pathogen (Colletotrichum capsici) of chilli, by poison food technique. The radial growth of the fungus in Petri plates was measured and the results were expressed as percentage inhibition of mycelial growth over control. Significant inhibition of mycelial growth was recorded with the 3 fungici...
Bacterial Diseases of Forage Crops
Assessment of antibacterial property in plants by direct testing of aqueous plant extract or solv... more Assessment of antibacterial property in plants by direct testing of aqueous plant extract or solvent extracted plant extracts on test pathogen is a time consuming process and therefore the preliminary assessment technique to confirm antibacterial property in unknown plant is needed. Presence or absence of bacterial endophytes in the leaves of 56 medicinal plants was considered for the assessment of antibacterial compound in these medicinal plants. Absence of leaf endophytic bacteria in 29 medicinal plants was considered as a basis of presence for antibacterial compound in these plants. This was confirmed by inhibition of growth of the test bacterium, in the sterilized aqueous extract of three medicinal plants. The medicinal plant showing bacterial inhibition zone was further confirmed for antibacterial compound by formation of inhibition zone by aqueous extract, ethanol extract and methanol extract on test bacterium by paper disc method. Medicinal plants which did not have bacterial...
Bacterial Diseases of Plantation Crops
Journal of Pharmacognosy and Phytochemistry, 2018
Ten farmers field of two talukas of Nandurbar district of Western Maharashtra viz., Nandurbar and... more Ten farmers field of two talukas of Nandurbar district of Western Maharashtra viz., Nandurbar and Shahada were surveyed for Alternaria leaf blight disease of tomato crop. For the management of Alternaria leaf blight disease of tomato, farmers in these area uses fungicide Dithane-M-45, Bavistin, Ridomil, Blitox and Captaf. However, Alternaria leaf blight pathogen had developed resistance to the fungicides Dithane-M-45, Bavistin and Captaf; but it was still susceptible to Blitox and Ridomil. The Captaf resistant isolates had dull white colour coloured mycelial growth. At the bottom line, in Nandurbar district, the farmers may use Ridomil and Blitox for the control of Alternaria leaf blight pathogen.
Bacterial Diseases of Flowering Plants and Ornamentals
The solvent plant extracts of Terminalia chebula, Simarouba glauca and Bixa orellana showed inhib... more The solvent plant extracts of Terminalia chebula, Simarouba glauca and Bixa orellana showed inhibitory effect when tested against the Xanthomonads by paper disc method. The active fraction of the solvent extracts was separated using thin layer chromatography. Two major peaks on Gas chromatography mass spectroscopy were identified as 4-(4-chlorophenyl) pyridine and phthalic acid respectively. Commercially available compounds of 4-(4-chlorophenyl) pyridine and phthalic acid when tested against the bacteria Clostridium perfringens and Pseudomonas aeruginosa, and the fungus Aspergillus niger, showed that the compound only 4-(4-chlorophenyl) pyridine possess the antimicrobial property against bacteria well as fungi.
Bacterial Diseases of Oilseed Crops
Adaptation Strategies and Defence Mechanisms of Plants During Environmental Stress
Medicinal Plants and Environmental Challenges, 2017
Several biotic and abiotic stresses affect plant growth, development and crop productivity. To co... more Several biotic and abiotic stresses affect plant growth, development and crop productivity. To cope up all these stresses, plant develops certain efficient strategies to avoid or tolerate the stresses which allow them to adapt and defense themselves from stress situations. Such adaptation strategies are at morphological, anatomical, biochemical and molecular levels. Molecular crosstalk, epigenetic memories, reactive oxygen species (ROS) signaling, accumulation of plant hormones such as salicylic acid, ethylene, jasmonic acid and abscisic acid, change in redox status and inorganic ion fluxes, R-gene resistance and systemic acquired resistance (SAR) are some of the modifications/mechanisms adopted by plants to adapt and defense themselves from the environmental stress. The novel “omics” technologies allow the researchers to identify the genetics behind plant stress response and adaptation and provide unbiased data that can be precisely used to investigate the complex interplay between the plants, its metabolism and the stress environment.
Bacterial Diseases of Crop Plants
Bacterial Diseases of Crop Plants, 2016
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Papers by Rupert Anand Yumlembam