Refine your search
Collections
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Vanitha, S.
- Utilisation of Waste Plastics as a Partial Replacement of Coarse Aggregate in Concrete Blocks
Abstract Views :146 |
PDF Views:0
Authors
Affiliations
1 Department of Civil Engineering, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
2 Jeppiaar Engineering College, Chennai - 600119, Tamil Nadu, IN
1 Department of Civil Engineering, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
2 Jeppiaar Engineering College, Chennai - 600119, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 12 (2015), Pagination:Abstract
The rapid industrialization and urbanization in the country leads lot of infrastructure development. This process leads to several problems like shortage of construction materials, increased productivity of wastes and other products. This paper deals with the reuse of waste plastics as partial replacement of coarse aggregate in M20 concrete. Usually M20 concrete is used for most constructional works. Waste Plastics were incrementally added in 0%, 2%, 4%, 6%, 8% and 10% to replace the same amount of Aggregate. Tests were conducted on coarse aggregates, fine aggregates, cement and waste plastics to determine their physical properties. Paver Blocks and Solid Blocks of size 200 mm X 150 mm X 60 mm and 200 mm X 100 mm X 65 mm were casted and tested for 7, 14 and 28 days strength. The result shows that the compressive strength of M20 concrete with waste plastics is 4% for Paver Blocks and 2% for Solid Blocks.Keywords
Coarse Aggregate, Fine Aggregate, Paver Blocks, Solid Blocks, Waste PlasticsFull Text
- Efficacy of Bio-Control Agents and Fungicides in Management of Mulberry Wilt Caused by Fusarium solani
Abstract Views :324 |
PDF Views:226
Authors
P. Narayanan
1,
S. Vanitha
1,
J. Rajalakshmi
1,
S. Parthasarathy
1,
K. Arunkumar
1,
K. Nagendran
1,
G. Karthikeyan
1
Affiliations
1 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, IN
1 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore – 641003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 29, No 2 (2015), Pagination: 107-114Abstract
A study was conducted to know the efficacy of potential biocontrol agents and fungicides against mulberry wilt, Fusarium solani. Three antagonists viz., Trichoderma viride., Pseudomonas fluorescens and Bacillus subtilis and six fungicides viz., carbendazim, mancozeb, zineb, copper oxy chloride, tebuconazole and pre-mixture fungicide (carbendazim 75% + mancozeb 25%) were tested under in vitro and in pot culture against wilt pathogen. The results showed that Trichoderma and the bacterial bioagents significantly reduced the mycelial growth of the pathogen. Among the fungicides, mixture of carbendazim + mancozeb (0.1 %) completely inhibited the mycelial growth of the pathogen. In pot culture studies, the minimum (10.5 %) incidence of wilt was observed in soil drenching with carbendazim (0.1%) which was on par with soil application of consortia (Seri bed waste+Pf1+Bs4+Tv1+Neem cake) which showed 12.3 per cent incidence as compared to maximum (46.7 %) wilt incidence in control. Similarly, in field studies also recorded the minimum incidence in soil drenching with carbendazim (0.1%) followed by soil application with consortia.Keywords
Bioagents, Fungicides, Fusarium solani, Mulberry, Wilt.Full Text
- Reduction of Test Data Volume Based On Viterbi Compression Algorithm
Abstract Views :140 |
PDF Views:3
Authors
Affiliations
1 P. A. College of Engineering and Technology, Pollachi-2, IN
1 P. A. College of Engineering and Technology, Pollachi-2, IN
Source
Software Engineering, Vol 7, No 3 (2015), Pagination: 74-79Abstract
Test vector compression has been an active area of research, yielding a wide variety of techniques. A test pattern compression scheme is proposed in order to reduce test data volume and application time. The proposed scheme finds a set of compressed test vectors using the Viterbi algorithm instead of solving linear equations. By assigning a cost function to the branch metric of the Viterbi algorithm, an optimal compressed vector is selected among the possible solution set. This feature enables high flexibility to combine various test requirements such as low-power compression and/or improving capability to repeat test patterns. The proposed on chip decompressor follows the structure of Viterbi encoders which require only one input channel. Experimental results compared with the dictionary algorithm compression. Dictionary based compression techniques are also popular in embedded systems domain. Since they provide a dual advantage of good compression efficiency as well as fast decompression mechanism. Viterbi algorithm provides better compression ratio compared to dictionary algorithm.Keywords
Test Data Compression, Viterbi, Dictionary, Compression Efficiency.
- Strategic Eco-Friendly Management of Post-Harvest Fruit Rot in Papaya Caused by Colletotrichum gloeosporioides
Abstract Views :262 |
PDF Views:127
Authors
Affiliations
1 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore - 641003, Tamil Nadu, IN
1 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore - 641003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 33, No 3 (2019), Pagination: 225-235Abstract
Papaya (Carica papaya L.) is one of the important fruits cultivated in the tropical and subtropical regions are widely prone to the post-harvest anthracnose disease. A sum of ten isolates of Colletotrichum gloeosporioides were collected and identified through morphological and molecular method. Morphological characterization of the isolates revealed a wide variation among the isolates with respect to colony colour, topography, margin, pigmentation and zonation. The ITS gene region and the specific primer, MKCgF coupled with ITS-4, which generated amplicons of size 560 bp and 380 bp respectively for C. gloeosporioides. The amplicon (560 bp) of virulent strain Cg1 was partially sequenced [MF062699]. In order to formulate eco-friendly management practices, the in vitro screening of different biocontrol agents viz., Bacillus spp., Pseudomonas spp., plant extracts and essential oils were tested against the C. gloeosporioides. Based on the in vitro efficacy, Bacillus sp. (BSP1) and cinnamon oil were selected and further tested under field conditions as pre harvest spray and after harvest as fruit dipping. The experimental results revealed that pre-harvest spray with Bacillus sp. (BSP1) (5%) + post-harvest dipping with cinnamon oil (0.1%) recorded the lowest PDI of 3.25 when compared to control (70.36) and also increased the shelf life of papaya fruits up to 14 days. Our results show that this novel methodology of use a combination of biocontrol agent as pre-harvest spray and essential oils as post-harvest fruit dipping will protect against post-harvest anthracnose of papaya and use of chemical fungicides can be avoided.
Keywords
Anthracnose, Bacillu spp, Colletotrichum gloeosporioides, Cinnamon Oil, Formulation, Thyme Oil.Full Text
References
- Agres. 1994. Statistical Software Version 3.01. Pascal International Software Solutions, USA.
- Alvarez AM, Nishijima WT. 1987. Postharvest diseases of papaya. Plant Dis. 71: 681-686. https://doi.org/10.1094/PD-71-0681
- Anonymous. 2017. National Horticulture database. National Horticulture Board, Govt. of India, Gurgaon, India. pp. 182. www.nhb.gov.in
- Bose SK, Sindhar GS, Pande BN. 1973. Studies on the dieback disease of mango in the Tarai region of Kumaon. Prog Hort. 5: 41-53.
- Brankica T, Slavica G, Jovana H, Milica M, Mila G, Goran D, Marija S. 2013. Development of a thyme essential oil formulation and its effect on Monilinia fructigena. Pestic Phytomed. 28: 273-280. https://doi.org/10.2298/PIF1304273T
- Dickman MB, Alvarez AM. 1983. Latent infection of papaya caused by Colletotrichum gloeosporioides. Plant Dis. 67: 748-750. https://doi.org/10.1094/PD-67-748
- Dennis C, Webster J. 1971. Antagonistic properties of species groups of Trichoderma: production of non-volatile antibiotics. Trans Br Mycol Soc. 57: 25-39. https://doi.org/10.1016/S0007-1536(71)80077-3
- Hofmeyr JDJ. 1938. Genetical studies of Carica papaya L. South Afr J Sci. 35: 300-304.
- Jeffries P, Dodd JC, Jeger MJ, Plumbley RA. 1990. The biology and control of Colletotrichum species on tropical fruit crops. J Plant Pathol. 39: 343-366. https:// doi.org/10.1111/j.1365-3059.1990.tb02512.x
- Joshi PV, Kadam JJ, Joshi MS, Pawar SV. 2015. Symptomatology, pathogenicity, host range and cultural study of Colletotrichum gloeosporioides (Penz.) Penz. and Sacc. causing tip blight of jackfruit (Artocarpus heterophyllus L.). Periodic Res. 4: 1-5.
- Kagale S, Marimuthu T, Thayumanavan B, Nandakumar R, Samiyappan R. 2004. Antimicrobial activity and induction of systemic acquired resistance in rice by leaf extract of Datura metal against Rhizoctonia solani and Xanthomonas oryzae pv. oryzae. Physiol Mol Plant Pathol. 65: 91. https://doi.org/10.1016/j.pmpp.2004.11.008
- Kamle M, Pandey BK, Kumar P, Muthu Kumar M. 2013. A species-specific PCR based assay for rapid detection of mango anthracnose pathogen Colletotrichum gloeosporioides Penz. and Sacc. J Plant Pathol Microbiol. 4: 6. https://doi.org/10.4172/2157-7471.1000184
- Kelebek H, Selli S, Gubbuk H, Gunes E. 2015. Comparative evaluation of volatiles, phenolics, sugars, organic acids and antioxidant properties of Sel-42 and Tainung papaya varieties. Food Chem. 173: 912-919. https://doi.org/10.1016/j.foodchem.2014.10.116 PMid:25466106
- Kessmann H, Staub T, Hofmann C, Maetzke T, Herzo J. 1994. Induction of systemic acquired disease resistance in plants by chemicals. Ann Rev Phytopathol. 32: 439-459. https://doi.org/10.1146/annurev.py.32.090194.002255 PMid:18479201
- Kulshrestha S, Chaturvedi S, Jangir R, Agrawal K. 2015. In vitro Evaluation of antibacterial activity of some plant leaf extracts against Xanthomonas axonopodis pv. phaseoli isolated from seeds of lentil (Lens culinaris Medik). Intern Res J Biol Sci. 4: 59-64.
- Macedo TG. 2004. Chemical control and hydrothermal of anthracnose in fruits of mamoiro (Carica papaya) in the post-harvest. Brazilian J Fruticul. 28: 131-133.
- Mahesh B, Satish S. 2008. Antimicrobial activity of some important medicinal plants against plant and human pathogens. World J Agrl Sci. 4: 839-843.
- Manikandan R, Saravanakumar D, Rajendran L, Raguchander T, Samiyappan R. 2010. Standardization of liquid formulation of Pseudomonas fluorescens Pf1 for its efficacy against Fusarium wilt of tomato. Biol Control. 54: 83-89. https://doi.org/10.1016/j.biocontrol.2010.04.004
- Murray MG, Thompson WF. 1980. Rapid isolation of high molecular weight plant DNA. Nucleic Acids Res. 8(19): 4321-4325. doi: 10.1093/nar/8.19.4321 https://doi.org/10.1093/nar/8.19.4321 PMid:7433111 PMCid:PMC324241
- Muthulakshmi P, Ragavi B, Parthasarathy S. 2017. Influence of abiotic factors on the growth of Colletotricum musae causing post-harvest anthracnose disease in banana. Int J Agric Sci Res. 7:121-128.
- Narayanan P, Parthasarathy S, Rajalakshmi J, Arunkumar P, Vanitha S. 2016. Systemic elicitation of defense related enzymes suppressing Fusarium wilt in mulberry (Morus spp.). Afr J Microbiol Res. 10: 813-819. https://doi.org/10.5897/AJMR2015.7900
- Nene YL, Thapliyal PN. 1982. Fungicides in Plant Diseases Control. Oxford and IBH Pubishing Co Pvt. Ltd., New Delhi. pp.163.
- Obon JM, Diaz-Garcia MC, Castellar MR. 2011. Red fruit juice quality and authenticity control by HPLC. J Food Compos Anal. 6: 760-771 https://doi.org/10.1016/j.jfca.2011.03.012
- Pandey A, Yadava LP, Manoharan M, Chauhan UG, Pandey BK. 2012. Effectiveness of cultural parameters on the growth and sporulation of Colletotrichum gloeosporioides causing anthracnose disease of mango (Mangifera indica L). J Biol Sci. 12: 123-133. https:// doi.org/10.3844/ojbsci.2012.123.133
- Pandey DK, Tripathi RN, Tripathi NN. 1982. Antifungal activity in some seed extracts. Environ India. 4: 164167.
- Parthasarathy S, Rajalakshmi J, Narayanan P, Arunkumar K, Prabakar K. 2017. Bio-control potential of microbial antagonists against post-harvest diseases of fruit crops: A review. Res Rev: J Bot Sci. 6: 17-23.
- Parthasarathy S, Rajalakshmi J, Narayanan P, Prabakar K.2016a. Botanicals in eco-friendly post-harvest disease management. Innovative Farm. 1: 67-71.
- Parthasarathy S, Thiribhuvanamala G, Subramanium KS, Prabakar K. 2016b. Bacterial antagonists and hexanalinduced systemic resistance of mango fruits against Lasiodiplodia theobromae causing stem-end rot. J Plant Interact. 11: 158-166. https://doi.org/10.1080/1742914 5.2016.1252068
- Paull RE, Nishijima W, Reyes M, Cavaletto C. 1997. Postharvest handling and losses during marketing of papaya (Carica papaya). Postharvest Biol Technol. 11: 165-179. https://doi.org/10.1016/S0925-5214(97) 00028-8
- Rangaswami G. 1958. An agar block technique for isolating soil micro-organisms with special reference to Pythiaceous fungi. Sci Culture 24: 85-94.
- Ravindran C, Kohli, Anshuman, Murthy and Srinivas. 2007. Fruit production in India. Chronica Horticulturae 42: 21-26.
- Rahman MA, Kadhir J, Mahmud TMM, Abdul R, Begum S. 2007. Screening of antagonistic bacteria for biocontrol activities on Colletotrichum gloeosporioides in papaya. Asian J Plant Sci. 6: 12-20. https://doi.org/10.3923/ajps.2007.12.20
- Roopadevi, Jamadar MM. 2016. In-vitro bioassay of different fungicides against anthracnose of green gram caused by Colletotrichum truncatum (Schw.) Andrus and Moore. Environ Ecol. 34: 132-135.
- Rufino MS, Alves RE, de Brito ES, Perez-Jimenez J, SauraCalixto F, Mancini-Filho J. 2010. Bioactive compounds and antioxidant capacities of 18 non-traditional tropical fruits from Brazil. Food Chem. 121: 996-1002.https:// doi.org/10.1016/j.foodchem.2010.01.037
- Siddiqui Y, Ali A. 2014. Colletotrichum gloeosporioides (Anthracnose). Post-harvest Decay 4: 337-364. https:// doi.org/10.1016/B978-0-12-411552-1.00011-9
- Spadaro D, Gullino ML. 2004. State of the art and future prospects of the biological control of postharvest fruit disease. Intern J Food Microbiol. 91:185-194. https:// doi.org/10.1016/S0168-1605(03)00380-5
- Stracieri J, Pereira FD, da Silveira AL, Magalhães HM, de Goes A. 2016. Morphocultural and molecular characterization of papaya tree Colletotrichum spp. Afr J Agrlc Res. 11: 1755-1764. https://doi.org/10.5897/AJAR2016.10868
- Sutton BC. 1992. The genus Glomerella and its anamorph Colletotrichum. pp. 1-26. In: Bailey JA, Jeger MU (Eds.). Colletotrichum biology, pathology and control. CAB International, Wallingford.
- Taale E, Savadogo A, Zongo C, Somda MK, Sereme SS, Karou SD, Soulama I, Traore, AS. 2015. Biochemical and molecular characterization of strains isolated bacteria from Soumbala. Int J Adv Res Biol Sci. 2: 279-290.
- Vanitha S. 2010. Developing new formulation using plant oils and testing their physical stability and antifungal activity against Alternaria chlamydospora causing leaf blight in Solanum nigrum. Res J Agric Sci. 1: 385-390.
- Vincent JM. 1947. Distortion of fungal hyphae in the presence of certain inhibitors. Nature 150: 850. https:// doi.org/10.1038/159850b0 PMid:20343980
- Udomkun P, Nagle M, Mahayothee B, Nohr D, Koza A, Müller J. 2014. Influence of air drying properties on non-enzymatic browning, major bio-active compounds and antioxidant capacity of osmotically pre-treated papaya. LWT-Food Sci Technol. 60: 914-922. https://doi.org/10.1016/j.lwt.2014.10.036
- White TJ, Bruns TD, Lee SB and Taylor JW. 1990. Amplification and Direct Sequencing of Fungal Ribosomal RNA Genes for Phylogenetics. pp. 315-322. In: Innis MA, Gelfand DH, Sninsky JJ and White TJ (Eds). PCR protocols: A guide to methods and applications. Academic Press, New York.
- Xiao CL, Mac Kenzie SJ, Legard DE. 2004. Genetic and pathogenic analyses of Colletotrichum gloeosporioides from strawberry and non-cultivated hosts. Phytopathology. 94: 446-453. https://doi.org/10.1094/PHYTO.2004.94.5.446 PMid:18943762