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
Rajendran, L.
- Efficacy of Biological Control Agents for Management of Postharvest Black Rot Pathogen Aspergillus carbonarius in Grapes
Authors
1 Department of Plant Pathology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 26, No 3 (2012), Pagination: 266–271Abstract
Grape berries were treated with different biological agents to test their efficacy in reducing post harvest incidence of black mould rot and minimize the loss. The agents Pseudomonas, Bacillus, Trichoderma and yeast isolates were individually screened against the black rot pathogen Aspergillus carbonarius. B. subtilis strains EPC-8 and EPCO-16 and T. harzianum (Th Co) showed high mycelial growth suppression of A. carbonarius in vitro. The effective biological control agents were tested in pre, post and combined inoculation studies against A. carbonarius in grape berries. In the pre inoculation, B. subtilis (EPC-8) showed 57.80 per cent reduction in the incidence of A. carbonarius followed by T. harzianum (Th Co) (48.43 percent). The same trend of effectiveness was also found in the post-inoculation and combined inoculation tests under storage conditions at room temperature in grape berries.Keywords
Aspergillus carbonarius, Bacillus subtilis, Trichoderma harzianum.References
- CABI. 2000. Phenacoccus madeirensis Green. Distribution Maps of Pests Map No. 607. CAB International, UK 4 pp.
- Fish J, Chiche Y, Day R, Efa N, Witt A, Fessehaie R, Johnson KDG, Gumisizira G, Nkandu B. 2010. Mainstreaming gender into prevention and management of invasive species. Global Invasive Species Programme, 63 p. www.gisp.org
- Green EE. 1923. Observations on the Coccoidae of the Madeira Islands. Bull Ent Res. 14: 87–97.
- Muniappan R, Shepard BM, Watson GW, Carner GR, Rauf A, Sartiami D, Hidayat P, Afun JVK, Goergen G, Ziaur Rahman AKM. 2009. New Records of Invasive Insects (Hemiptera: Sternorrhyncha) in Southeast Asia and West Africa. J Agric Urban Ent. 26(4): 167–174.
- Williams DJ. 2004. Mealybugs of Southern Asia. The Natural History Museum, Kuala Lumpur: Southdene SDN, BHD. 896 pp.
- Williams DJ. 1987. Phenacoccus gossypii Townsend & Cockerell, P. madeirensis Green and some related mealybug species (Hemiptera: Pseudococcidae). Bull Ent Res. 77: 335–356.
- Effect of Various Organic Substrates on the Mass Multiplication of Trichoderma viride
Authors
1 Center for Plant Molecular Biology. Tamil Nadu Agricultural University, Coimbatore-641003, Tamil Nadu, IN
2 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 21, No 2 (2007), Pagination: 313-316Abstract
Four different organic substrates, viz., decomposed coir pith, dried cow dung, rice bran and tea waste, were tested tor the growth of Trichoderma viride (isolate t). The population (CFU) of T. viride on various substrates was estimated at 20th, 30th, 40th and 60th day after inoculation by serial dilution plate technique. The population of T. viride was highest on 20th day in sterilized tea waste (236.30 × 106 cfu), followed by rice bran (152 × 106 cfu), decomposed coir pith (44.35 × 106 cfu), talc (36 × 106 cfu) and dried cow dung (20 × 106 cfu). Sterilized substrate was favourable for the multiplication of T. viride except for dried cow dung. The population increased in all the substrates except talc on 30th day and declined from 40th day onwards.Keywords
Colony Forming Unit (CFU), Organic Substrates, Talc, Trichoderma viride (Isolate 1).- Effect of TNAU-Pf1 Seed Biopriming and Foliar Spray of Newer Fungicides on the Incidence of Leaf Blight of Sunflower
Authors
1 Plant Pathology, TNAU, Coimbatore – 3, Tamil Nadu, IN
2 Agronomy, TNAU, Coimbatore - 3, Tamil Nadu, IN
3 PBG, TNAU, Coimbatore - 3, Tamil Nadu, IN
4 Department of Oilseeds, TNAU, Coimbatore - 3, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 31, No 2 (2017), Pagination: 114-118Abstract
Seed biopriming followed by foliar spray of different newer fungicide molecules to manage sunflower leaf spot under field conditions have been tried in Coimbatore, Tamil Nadu, India for three consecutive years (2014-2016). The result indicated that among the different treatments tested, seed biopriming with TNAU Pseudomonas fluorescens (Pf1) @ 10g/kg seeds followed by spray of Hexaconazole @ 0.1% at 45 days and P. fluorescens (Pf1) @ 1.0% at 60 DAS showed less severity of Alternaria leaf spot (25.7) with the highest yield of 1471kg/ha against the control (47.7) which recorded yield of 1111kg/ha. In addition, seed biopriming promoted higher and uniform seed germination under field conditions.Keywords
Newer Molecule, Leaf Spot/Blight, Seed Biopriming, Seed Yield, Sunflower.References
- Alves JL, Woudenberg JHC, Duarte LL, Crous PW, Barreto RW. 2013. Reappraisal of the genus Alternariaster (Dothideomycetes). Persoonia 31: 77–85. DOI: 10.3767/003158513X669030. https:// doi.org/10.3767/003158513X669030
- Devi A, Mohan PS, Rajalakshmi J. 2014. Growth promotion activity and biological control for the management of leaf blight incited by Alternaria helianthi. Arch. Phyopath Pl Prot. 47(18): 2280–2287. https://doi.org/ 10.1080/03235408.2013.874239
- Arunakumara KT, Kulkarni MS, Thammaiah N, Yashoda H. 2010. Fungicidal management of early blight (Alternaria solani) of tomato. Indian Phytopathol. 63(1): 96–97
- Balasubrahmanyam N, Kolte SJ. 1980. Effect of Alternaria blight on yield components, oil content and seed quality of sunflower. Indian J Agric Sci. 50: 701–706.
- Beattie GA, Lindow SE. 1995. The secret life of foliar bacterial pathogens on leaves. Annu Rev Phytopathol. 33: 145–172. https://doi.org/10.1146/annurev.py.33.090195.001045 PMid:18294082
- Chander Rao S, Sujatha M, Karuna K, Varaprasad KS. 2015. Powdery mildew disease in sunflower : A review. J Oilseeds Res. 32(1): 111–122
- Ganesan S, Ganesh Kuppusamy R, Sekar R. 2007. Integrated management of stem rot disease (Sclerotium rolfsii) of groundnut (Arachis hypogaea L.) using Rhizobium and Trichoderma harzianum (ITCC - 4572). Turk J Agric. 31: 103–108.
- Gomez KA, Gomez AA. 1984. Statistical procedure for agricultural research. John Wiley and Sons, New York.
- Hammerschmidt R, Nucldes EM, Kuc J. 1982. Association of enhanced peroxidase activity with induced systemic resistance of cucumber to Colletotrichum lagenarium. Physiol Mol Plant Pathol. 20: 73–82. https://doi.org/10.1016/0048-4059(82)90025-X
- Jeffrey F. 1984. Seed treatment fungicides for control of seed borne Alternaria helianthi on sunflower. Pl. Dis. 69(2): 124–126. https://doi.org/10.1094/PD-69-124
- Leite RMVBC, Amorim L. 2002. Elaboracao e validacao deescala diagramatica para mancha de Alternaria em girassol. Summa Phytopathol. 28: 14–19.
- Mathivanan N, Prabavathy VR. 2007. Effect of carbendazim and mancozeb combination on Alternaria leaf blight and seed yield of sunflower. Arachis Phytopathol Plant Protect. 40(2): 90–96. https://doi.org/10.1080/03235400500321768
- Mesta RK, Sunkad G and Katti P. 2003. Chemical control of alternaria blight of sunflower. In: Proceedings of the National Seminar on Stress Management in Oilseeds - Attaining Self Reliance Vegetable Oils, January 28 – 30, Directorate of Oilseeds Research, Hyderabad, p. 149–151. PMid:12615394
- Navaneetha T, Prasad RD, Venkateswar Rao L. 2014. Liquid Formulation of Trichoderma Species for Management of Gray mold in Castor (Ricinus communis L.) and Alternaria Leaf Blight in Sunflower (Helianthus annuus L.) J Biofertil Biopest. 6:1
- Prathuangwong S, Kao SW, Sommartya T, Sinchaisri P. 1991. Role of four Alternaria spp. causing leaf and stem blight of sunflower in Thailand and their chemical controls. Kasetsart J. 25: 112–124.
- Rao MSL. 2006. Studies on seed borne fungal diseases of sunflower and their management. Ph.D. Thesis, University of Agricultural Sciences, Dharwad pp.55–90.
- Ramakrishnan B, Kamalanathan K, Krishnamurthy CS. 1971. Studies on Alternaria leaf spot of tomato. Madras Agric J. 158: 275–280.
- Rao MA, Nageshwar Rao TG. 1997. Management of sunflower Alternaria blight [Alternaria helianthi (Hansf.)] IPS golden jubilee International Conference on Integrated Plant Diseases Management for Sustainable Agriculture held on 10-15, Nov., 1997, New Delhi, India, pp. 359.
- Reddy PC, Gupta BM. 1977. Disease loss appraisal due to leaf blight of sunflower indicated by Alternaria helianthi. Indian Phytopathol. 30: 569–570.
- Singh HK, Singh RB. 2007. Integrated management of Alternaria blight of Rapeseed-mustard. Indian Phytopathol. 60(3): 396.
- Shirshikar SP. 2008. Integrated management of sunflower Necrosis disease. HELIA 31(49): 27–34. https://doi.org/10.2298/HEL0849027S
- Waghe KP, Wagh SS, Kuldhar DP, Pawar DV. 2015. Evaluation of different fungicides, bioagents and botanicals against Alternaria blight caused by Alternaria helianthi (Hansf) of sunflower. Afr J Agric Res. 10(5): 351–358
- Wang T, Zhao J, Sun P, Wu X. 2014. Characterization of Alternaria species associated with leaf blight of sunflower in China. Eur J Plant Pathol. 140: 301. doi:10.1007/s10658-014-0464-z https://doi. org/10.1007/s10658-014-0464-z
- Isolation and in vitro studies on indigenous fungi against ischolar_main-knot nematode, Meloidogyne incognita
Authors
1 Department of Nematology, AC&RI, TNAU, Coimbatore – 641 003, Tamil Nadu, IN
2 Department of Plant Pathology, AC&RI, TNAU, Coimbatore – 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 35, No 3 (2021), Pagination: 153-160Abstract
The present study was carried out to evaluate the indigenous fungi from soil against the ischolar_main knot nematode, Meloidogyne incognita. Eleven isolates were isolated and screened for their efficacy against nematode under in vitro condition for egg hatching and juvenile mortality. The results revealed that the isolate F6 showed the highest egg hatching inhibition (88.5%) followed by F11 and F7 compared to control after incubation for 72 h. The highest juvenile mortality of 73% was recorded in isolate F6 followed by F11 and F9 after 72 h. Isolate F6 was morphologically and molecularly identified as Talaromyces pinophilus and F9 and F11 were identified as Aspergillus corrugates and Aspergillus nidulans. Among the fungi, T. pinophilus was found to be highly effective against ischolar_main knot nematode.