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Patibanda, A. K.
- Evaluation of Toxicity of Agrochemicals on Trichoderma isolates In vitro
Abstract Views :292 |
PDF Views:110
Authors
Affiliations
1 Department of Plant Pathology, Agricultural College, Bapatla 522 101, Andhra Pradesh, IN
1 Department of Plant Pathology, Agricultural College, Bapatla 522 101, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 26, No 4 (2012), Pagination: 391-395Abstract
Thirty nine agrochemicals comprising eighteen fungicides, eleven insecticides, six fertilizers and four herbicides were evaluated at different concentrations against two isolates of Trichoderma spp., and EC50 and EC90 values were calculated based on inhibition in radial growth. Isolate T. virens TV9, obtained from citrus orchard-relatively less exposed to agrochemicals was found more sensitive compared to isolate T. harzianum Th4, obtained from cotton ecosystem relatively more exposed to agrochemicals. Among fungicides, benzimidazoles showed higher toxicity followed by chlorothalonil and triazoles when mean EC50 values were compared. Wettable sulphur, Bordeaux mixture, azoxystrobin and mancozeb were found to be less toxic to Trichoderma spp. Among insecticides, organophosphorous group was found more toxic while carbofuran followed by spinosad were least toxic. Among fertilizers Zinc sulphate and diammonium phosphate were found highly toxic whereas potassium nitrate, muriate of potash and ammonium sulphate showed less toxicity. All the four test herbicides, i.e., pendimethalin, alachlor, glyphosate and 2, 4-D were found to be toxic to Trichoderma spp.Keywords
Toxicity, Trichoderma spp., Fungicides, Insecticides, Fertilizers,Herbicides, EC50 and EC90.References
- Akbari LF, Parakhia AM. 2001. Effect of fungicides on fungal bioagents. J Mycol Pl Pathol. 31(1): 101.
- Elad Y, Chet I, Katan I. 1980. Trichoderma harzianum a biocontrol agent effective against Sclerotium rolfsii and Rhizoctonia solani. Phytopathology 70: 119–121.
- Mukhopadhyay AN. 1987. Biological control of soil borne plant pathogens by Trichoderma spp. Indian J Mycol Pl Pathol. 17: 1–10.
- Nene YL, Thapliyal PN. 1993. Fungicides in plant disease control 3rd ed. Oxford and IBH Publishing Co. Pvt. Ltd. 691 pp.
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- Papavizas GC. 1985. Trichoderma and Gliocladium: Biology, ecology and potential for biocontrol. Ann Rev Phytopathol. 23: 23–54.
- Rai Ajay Kumar, Srivastava M, Udit Narayanan. 2005. Assessment of compatibility of Trichoderma harzianum with agrochemicals. Indian J Pl Pathol. 23(1&2): 104–106.
- Reshmy Vijayaraghavan, Koshy Abraham. 2004. Compatibility of biocontrol agents with pesticides and fertilizers used in black pepper gardens. J Mycol Pl Pathol. 34(2): 506–510.
- Srinivasulu B, Doriswamy S, Aruna K, Rao DVR, Rabindran R. 2002 Efficacy of bio-control agent, chemicals on Ganoderma sp, the coconut basal stem rot pathogen. J Plantn Crops 30(3): 57–59.
- Tiwari RKS, Rajput ML, Singh A, Thakur BS. 2004. Non target effect of insecticides on the mycelial growth of Trichoderma harzianum. Indian J Pl Prot. 32(2): 140–141.
- Upadhyay JP, Lal HC, Roy S. 2004. Effect of fungicides, cakes and plant byproducts on Trichoderma viride. J Mycol Pl Pathol. 34 (2): 313–315.
- Effect of Botanicals on Storability of Sweet Corn (zea Mays L. Saccharum) Seeds
Abstract Views :268 |
PDF Views:0
Authors
D. Sandeep
1,
G. S. Chandrashekhar
2,
M. Ranganathswamy
3,
S. B. Mallesh
4,
H. B. Halesh Kumar
1,
A. K. Patibanda
5
Affiliations
1 Department of Seed Science and Technology, College of Agriculture (U.A.S.) Dharwad Karnataka, IN
2 Department of Agicultural Entomology, College of Agriculture (U.A.S.) Dharwad Karnataka, IN
3 Department of Plant Pathology, College of Agriculture, Bapatla, Agriculture College, Bapatla, Guntur A.P., IN
4 Department of Plant Pathology, College of Agriculture ,Bheemarayanagudi Karnataka, IN
5 Department of Plant Pathology, College of Agriculture, Bapatla, Agriculture College, Bapatla, Guntur A.P.
1 Department of Seed Science and Technology, College of Agriculture (U.A.S.) Dharwad Karnataka, IN
2 Department of Agicultural Entomology, College of Agriculture (U.A.S.) Dharwad Karnataka, IN
3 Department of Plant Pathology, College of Agriculture, Bapatla, Agriculture College, Bapatla, Guntur A.P., IN
4 Department of Plant Pathology, College of Agriculture ,Bheemarayanagudi Karnataka, IN
5 Department of Plant Pathology, College of Agriculture, Bapatla, Agriculture College, Bapatla, Guntur A.P.
Source
International Journal of Plant Protection, Vol 6, No 1 (2013), Pagination: 11-14Abstract
An experiment was conducted at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad during kharif 2008, to find out to enhance storability of sweet corn seeds through use of botanicals treatment. The storage studies revealed that seeds treated with sweet flag rhizome powder @ 10 g per kg of seeds had recorded higher germination (87.3 %), dry weight of seedlings (2.01g), vigour index (2864) and less infestation (3.60 %) at the end of 10 months of storage.Keywords
Sweet Corn, Botanicals, Sweet Flag, Germination- Mechanism of Aspergillus niger Van Teigh Antagonism towards Fusarium oxysporum Schlect f. sp. melonis Sny.&Hans., Muskmelon Wilt Pathogen
Abstract Views :215 |
PDF Views:126
Authors
A. K. Patibanda
1,
B. Sen
1
Affiliations
1 Division of Plant Pathology, Indian Agricultural Research Institute (ICAR), Pusa, New Delhi, 110012, IN
1 Division of Plant Pathology, Indian Agricultural Research Institute (ICAR), Pusa, New Delhi, 110012, IN
Source
Journal of Biological Control, Vol 19, No 2 (2005), Pagination: 115-120Abstract
In vitro interactions of antagonist Aspergillus niger isolate AN 27 and muskmelon wilt pathogen Fusarium oxysporum f. sp. melonis isolate MM 37 revealed three distinct growth phases of A. niger AN 27-initial normal growth with black colony colour due to sporulation, suppressed growth and sporulation followed by revived growth and sporulation. Change in medium pigmentation from violet to pink and formation of abundant thick mycelial strands and chains of chlamydospores were observed in F. oxysporum f. sp. melonis MM 37. Change in medium pigmentation of MM 37 was attributed to the change in medium pH brought by AN 27 by constitutively producing organic acids. Mechanisms involved in AN 27 antibiosis were production of organic acids, antimicrobial substances (n-butanol extract) and extra cellular enzymes - all of which inhibited microconidial germination of MM 37. Seed coating with A. niger AN 27 spores or seedling dip in its spore suspension protected muskmelon seedlings from Fusarial wilt in Rapid Pathogenicity test.Keywords
Aspergillus niger, Biological Control, Fusarium oxysporum f. sp. melonis, Muskmelon Wilt.- In vitro Screening of Aspergillus niger Van Teigh against Fusarium oxysporum f. sp. meionis, Muskmelon Wilt Pathogen
Abstract Views :381 |
PDF Views:147
Authors
A. K. Patibanda
1,
B. Sen
2
Affiliations
1 Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, IN
1 Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, IN
Source
Journal of Biological Control, Vol 18, No 1 (2004), Pagination: 29-34Abstract
Seven isolates of the antagonist Aspergillus niger van Teigh and three isolates of the muskmelon wilt pathogen Fusarium oxysporllm f. sp. melones were assayed for their in vitro interactions. The most virulent isolate of the pathogen was highly sensitive to antagonism compared to less virulent isolate. Variation existed among different A. niger isolates in their antagonistic potential. Observations on overgrowing ability of the antagonist, A. niger werc more useful in screening isolates compared to other parameters such as inhibition zone, radial growth of the test pathogen and I or of the test antagonist in A. niger Vs F. oxysporum r. sp. melonis system. Isolate AN 27 was found promising based on its biocontrol capabilities.Keywords
Antagonism, Aspergillus niger, Fusarium oxysporum f. sp. melonis, Muskmelon, Wilt.- Screening Trichoderma Isolates against Wilt Pathogens of Safflower, Carthamus tinctorius L.
Abstract Views :207 |
PDF Views:119
Authors
Affiliations
1 Acharya N. G. Ranga Agricultural University, Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Directorate of Oilseeds Research, Rajendranagar, Hyderabad 500 030, IN
1 Acharya N. G. Ranga Agricultural University, Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Directorate of Oilseeds Research, Rajendranagar, Hyderabad 500 030, IN
Source
Journal of Biological Control, Vol 18, No 1 (2004), Pagination: 103-106Abstract
Four Triehodenna isolates were tested for in vitro their antagonistic potential against safflower wilt causing pathogens Fusarium oxysporllnl f. sp. earthami and Macrophomina phaseolilla. Trichoderma viride (PDBC TV 32) and T. harzianum (POne TH 10) were effective against both the pathogens. Trichoderma viride, isolated from the Fllsarium wilt sick plot in Tandur was effective only against M. phaseolin a, while F. oxysporllm f. sp. earlhami had inhihitory effect on sporulation of T. viride.Keywords
Antagonism, Fusarium oxysporuni f. sp. cartlwmi, Macrophomina phuseolilla, Trichodermaspp.- Efficacy of Trichoderma harzianum Rifai alone or in Combination with Fungicides against Sclerotium Wilt of Groundnut
Abstract Views :218 |
PDF Views:172
Authors
Affiliations
1 Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Department of Plant Pathology, Tirhut College of Agriculture, Dholi, Rajendra Agricultural University, Muzaffarpur 843 121, Bihar, IN
3 151, Akansha, Udyan-II, Raibarcilly Road, Lucknow 226025, U. P., IN
1 Agricultural Research Station, Tandur 501 141, Ranga Reddy District, Andhra Pradesh, IN
2 Department of Plant Pathology, Tirhut College of Agriculture, Dholi, Rajendra Agricultural University, Muzaffarpur 843 121, Bihar, IN
3 151, Akansha, Udyan-II, Raibarcilly Road, Lucknow 226025, U. P., IN
Source
Journal of Biological Control, Vol 16, No 1 (2002), Pagination: 57-63Abstract
Trichoderma harzianum Rifai application either to soil as wheat bran saw dust (WBSD) preparation or on the groundnut seeds as spore coat proved effective against selerotium wilt caused by Sclerotium rolfsii Sacc. Synergistic and positive effects on disease control were registered when T. harzianum-WBSD preparation was applied to soil in integration with Vitavax or Vitavax-200. Integration of Thiram (seed coating) and soil application of antagonist was found compatible and synergistic. However, seed treatment with both antagonist and Thiram was found incompatible and hence may not be practically feasible for disease reduction.Keywords
Biocontrol, Fungicides, Groundnut, Integration, Sclerotium rolfsii, Trichoderma harzianum.- Compatibility of Trichoderma Isolates to Selected Insecticides in vitro
Abstract Views :182 |
PDF Views:0
Authors
M. Ranganathswamy
1,
A. K. Patibanda
2,
G. S. Chandrashekar
3,
S. B. Mallesh
4,
D. Sandeep
5,
H. B. Halesh Kumar
5
Affiliations
1 Department of Plant Pathology, College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
2 Department of Plant Pathology, College of Agriculture, Bapatla (Karnataka), IN
3 Department of Agricultural Entomology, College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
4 Department of Plant Pathology, College of Agriculture, Bheemarayanagudi (Karnataka), IN
5 Department of Seed Science and Technology College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
1 Department of Plant Pathology, College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
2 Department of Plant Pathology, College of Agriculture, Bapatla (Karnataka), IN
3 Department of Agricultural Entomology, College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
4 Department of Plant Pathology, College of Agriculture, Bheemarayanagudi (Karnataka), IN
5 Department of Seed Science and Technology College of Agriculture, University of Agricultural Science, Dharwad (Karnataka), IN
Source
Asian Journal of Bio Science, Vol 6, No 2 (2011), Pagination: 238-240Abstract
Eleven selected insecticides were evaluated for their compatibility to Trichoderma based on in vitro sensitivity of T. harzianum and T. virens. Observations on radial growth indicated that, chlorpyriphos and quinalphos were incompatible with Trichoderma spp showing 100 per cent inhibition of radial growth at field concentration. While dimethoate and endosulfan were least compatible showing more than 70 per cent inhibition of radial growth. Indoxacarb, carbofuran, fipronil were moderately compatible with radial growth inhibition in the range of 3-11per cent. Spinosad, emamectin benzoate, thiamethoxam and indoxacarb were found highly compatible with zero inhibition of radial growth of test Trichoderma isolates.Keywords
Insecticides, Compatibility, Trichoderma.- Toxicity of Some Insecticides to The Fall Army Worm Spodoptera frugiperda
Abstract Views :84 |
PDF Views:62
Authors
Affiliations
1 Department of Entomology, Agricultural College, Bapatla 522101, Andhra Pradesh, IN
1 Department of Entomology, Agricultural College, Bapatla 522101, Andhra Pradesh, IN
Source
Indian Journal of Entomology, Vol 84, No 3 (2022), Pagination: 680-682Abstract
A laboratory bioassay (topical application) was conducted to evaluate the relative toxicity of ten insecticides against third instar larvae of fall army worm, Spodoptera frugiperda (J E Smith). Emamectin benzoate was found to be the most toxic with least LC50 value (1 ppm). The order of toxicity was emamectin benzoate (1 ppm) > spinetoram (1.2 ppm) > chlorantraniliprole (1.8 ppm) > novaluron+ emamectin benzoate (7.7 ppm) > novaluron (18 ppm) > novaluron + indoxacarb (31.7 ppm) > flubendiamide (33.8 ppm) > indoxacarb (42.3 ppm) > lambda-cyhalothrin (77.2 ppm) > chlorpyriphos (184.7 ppm). Emamectin benzoate, spinetoram, chlorantraniliprole, novaluron+ emamectin benzoate, novaluron, novaluron + indoxacarb, flubendiamide, indoxacarb and lambda-cyhalothrin showed 184.70, 153.92, 102.61, 23.99, 10.26, 5.83, 5.46, 4.37 and 2.39 folds toxicity over chlorpyriphos, respectively at 72 hr after treatment.Keywords
Spodoptera frugiperda, Bioassay, Topical Application, Novaluron, Emamectin Benzoate, Indoxacarb and Spinetoram, Relative Toxicity, LC50.References
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