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Rani, Archana
- Potential of Trichoderma Spp. as Biocontrol Agents against Pathogens Causing Maydis Leaf Blight of Maize
Abstract Views :339 |
PDF Views:137
Authors
Affiliations
1 Department of Plant Pathology, Rajendra Agricultural University, Dholi Campus, Muzaffarpur 843121, Bihar, IN
2 Department of Genetics and Molecular Biology, Rajendra Agricultural University, Dholi Campus, Muzaffarpur 843121, Bihar, IN
1 Department of Plant Pathology, Rajendra Agricultural University, Dholi Campus, Muzaffarpur 843121, Bihar, IN
2 Department of Genetics and Molecular Biology, Rajendra Agricultural University, Dholi Campus, Muzaffarpur 843121, Bihar, IN
Source
Journal of Biological Control, Vol 23, No 1 (2009), Pagination: 89-91Abstract
Efficacy of bioagents against Helminthosporium maydis was studied in vitro and under field condition at Trihut college of Agriculture, Dholi (Muzaffarpur) in 2005 and 2006. Among the three native antagonist isolates of Trichoderma viride. Trichoderma harzianum and T. virens screened, T. viride inhibited the radial growth of H. maydis to an extent of 60.7% followed by T. harzianum (55.1%) and T. virens (52.6%). Studies on hyphal interaction between antagonists and test fungus revealed disorganization of protoplasmic content and lysis of host hyphae. Soil application of bioagents was more effective in protecting the crop than foliar spray. Soil application of T. viride resulted in minimum disease intensity (2.6) followed by T. harzianum (2.8) and T. virens (3.0). Soil application of T viride also gave maximum yield (18.6q ha-1) followed by T. harzianum (17.7q ha-1) and T. virens (17.3q ha-1), respectively. These results suggest the need to augment soil application of Trichoderma for obtaining effective management of maydis leaf blight.Keywords
Antagonism, Helminthosporium maydis, Trichoderma, Zea mays.Full Text
References
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- Prasad, R. D., Rangeshwaran, R., Hegde, S. V. and Anuroop, C. V. 2002. Effect of seed and soil application of Trichoderma harzianum on pigeon pea wilt caused by Fusarium udum under field conditions. Crop Protection, 21: 293-297.
- Rudresh, D. L., Shivprakash, M. K. and Prasad, R. D. 2005. Potential of Trichoderma spp. as biocontrol agents of pathogens involved in wilt complex of chickpea (Cicer arietinum L). Journal of Biological Control, 19: 157-166.
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- Evaluation of Trichoderma species against Fusarium udum Butler Causing Wilt of Pigeonpea
Abstract Views :232 |
PDF Views:125
Authors
Affiliations
1 College of Agriculture, Jawaharlal Nehru Krishi Vishwavidalaya, Ganj Basoda, Vidisha 464221, Madhya Pradesh, IN
2 Department of Plant Pathology, Trihut College of Agriculture, Rajendra Agricultural University, Dholi 843121, Muzaffarpur, Bihar, IN
3 Department of Genetics and Molecular Biology, Rajendra Agricultural University, Pusa 848125, Bihar, IN
1 College of Agriculture, Jawaharlal Nehru Krishi Vishwavidalaya, Ganj Basoda, Vidisha 464221, Madhya Pradesh, IN
2 Department of Plant Pathology, Trihut College of Agriculture, Rajendra Agricultural University, Dholi 843121, Muzaffarpur, Bihar, IN
3 Department of Genetics and Molecular Biology, Rajendra Agricultural University, Pusa 848125, Bihar, IN
Source
Journal of Biological Control, Vol 23, No 3 (2009), Pagination: 329-332Abstract
One isolate each of Trichoderma viride, Trichoderma harzianum and Trichoderma virens were evaluated against twelve isolates of Fusarium udum collected from different districts of Bihar, Jharkhand and West Bengal by dual culture technique. All the bioagents inhibited the growth of F. udum in vitro. Dholi isolate of T. harzianum inhibited the growth of F. udum isolates Fu-5, Fu-12, Fu-14, Fu-21, Fu-24, Fu-27 and Fu-43 by 40.8, 74.5 , 49.4, 59.1, 60.5, 40.8 and 57.8 per cent, respectively and proved superior to other antagonists. T. viride was found to have potential in inhibiting the radial growth of F. udum isolates Fu-29, Fu-37, Fu-49 and Fu-57 while T. virens was more effective in inhibiting the growth of Fu-61. Combined application of T. harzianum and T. viride as seed treatment and soil application gave minimum disease incidence (26.4%) and maximum disease control (56%) followed by 54% disease control in T. harzainum seed treatment and soil application. However, these two treatments were on par with each others. The results also revealed that soil application of bioagents was more effective than seed treatment.Keywords
Fusarium udum, Pigeonpea, Trichoderma Spp, Wilt.Full Text
References
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