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In vitro evaluation of bioagents
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The present investigation was undertaken to evaluate potential inhibitory effect of indigenous bacterial biocontrol agents against Fusarium oxysporum f. sp. cubense, a causal organism of wilt disease in Banana crop.
7p
trinhthamhodang11
27-04-2021
7
1
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The in vitro study was conducted to evaluate efficacy of bioagents against Xanthomonas axonopodis pv. vesicatoria causing bacterial leaf spot of chilli. An investigation consisting nine treatments with three replications in Completely Randomized Design was carried out to evaluate in vitro effect of antagonistic microorganism against of Xanthomonas axonopodis pv. vesicatoria.
6p
caygaocaolon11
21-04-2021
17
2
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The disease has been reported to causes more than 60 per cent mortality of seedlings both in nursery and field condition and about 50-80 per cent losses during storage (Nirmal, 1992); rhizome rot resulted in yield loss of 50% (Rajalakshmi et al., 2016).
9p
trinhthamhodang1218
26-02-2021
11
1
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The antagonistic efficacy of five different bio-agents viz., Trichoderma viride, Trichoderma harzianum, Trichoderma longibrachiatum, Pseudomonas fluorescens and Bacillus subtilis was tested against 25 isolates of Macrophomina phaseolina causing castor root rot by dual culture techniques under in vitro conditions.
5p
trinhthamhodang9
16-12-2020
11
2
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Pigeonpea wilt disease caused by Fusarium oxysporum f. sp. udum is one of most devasting seedborne disease. In this experiment total eight seed dressing fungicides at their recommended dosages were evaluated in-vitro by poisoned food technique, against Fusarium oxysporum f. sp. udum causing wilt.
5p
trinhthamhodang9
16-12-2020
8
1
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In vitro evaluation of three contact and five systemic and two combination was carried out under laboratory condition in 2018-19 at Department of Plant Pathology, College of Horticulture, Mysuru by using Potato Dextrose Agar medium (PDA) as basal medium and six biocontrol agents were evaluated through dual culture technique. The result revealed that, there was significant difference among the fungicides in inhibiting the radial growth of the A. solani.
7p
trinhthamhodang1216
19-11-2020
13
1
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Twelve fungicides including systemic and non-systemic, five bioagents and eight plant extracts were evaluated in vitro against Exserohilum turcicum, the causal agent of Turcicum leaf blight of maize. All the test fungicides, bioagents and plant extracts showed fungistatic action and significantly inhibited mycelial growth of the test pathogen over untreated control.
9p
angicungduoc8
07-11-2020
15
2
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Therefore, keeping in view the importance of the crop and seriousness of the disease the present investigation was under taken with Evaluation of botanicals against pathogen in in vitro condition and evaluation of botanicals/bioagents against disease under sick field conditions.
7p
chauchaungayxua8
03-10-2020
8
2
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Among the diseases of safflower; dry root rot disease caused by Macrophomina phaseolina (Tassi.) Goid is one of the most destructive and wide spread diseases of Safflower (Carthamous tinctorius L.) causing accountable losses of about 25-60 per cent. A total of ten fungicides namely: Captan, Iprodine, Copper Oxychloride, Thiram Mancozeb, Difenconazole, Propiconazole, Cymoxanil8%+Mancozeb 64%, Carbandazim, & Metalaxyl 8% + Mancozeb 64% were evaluated in vitro against Macrophomina phaseolina.
13p
trinhthamhodang1215
23-09-2020
7
2
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Keeping in view the economic importance of tomato, as a vegetable crop and losses incurred by Fusarium wilt in tomato, present investigations were carried out.
9p
trinhthamhodang1215
23-09-2020
8
1
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An experiment was conducted to find out the effective antibacterial chemicals and bioagents against the growth of Ralstonia solanacearum under in vitro conditions. Average inhibition was ranged from 6.2 mm (Copper hydroxide) to 20.05 mm (Streptocycline).
12p
cothumenhmong7
09-09-2020
14
2
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Soybean [Glycine max (L.) Merrill.] is an important oilseed crop. Colletotrichum truncatum, the incitant of anthracnose/ pod blight in soybean is one of the most destructive pathogens. Eight fungicides (@ 500, 1000, 1500, 2000 and 2500ppm each), 10 botanicals@ 10% and four bioagents were evaluated in vitro against C. truncatum, using PDA as basal medium. The results revealed that all the fungicides, botanicals and bioagents tested were found fungistatic and significantly inhibited the mycelial growth of the test pathogen over untreated control.
6p
nguaconbaynhay7
15-08-2020
18
1
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To manage the disease an investigation at the Department of Plant Pathology, SHIATS-DU, Allahabad was carried out to evaluate the effect of bio-agents viz. Trichoderma viride @ 2%, Pseudomonas fluorescens @ 2%, T. harzianum @ 2%, botanical viz. neem leaf extract @ 5%, neem oil @ 5% and fungicide viz. carbendazim @ 0.2% against R. solani under invitro condition by dual culture and poisoned food technique. All the bioagents and botanical were evaluated singly. All the treatments significantly inhibited the mycelial growth of R. solani as compared to untreated check.
5p
chauchaungayxua6
26-06-2020
11
2
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Foot rot of tomato is an important disease which causes severe loss in tomato production. The present study was carried out to evaluate five bioagents and six fungicides against Sclerotium rolfsii. Among the five antagonists tested the maximum inhibition was observed in Trichoderma virens (67%) and contrarily, no inhibition was observed in Bacillus subtilis. Six fungicides viz., carbendazim, captan, tebuconozole, copper oxychloride, hexaconozole and Tebuconazole +Trifloxytrobin at different concentrations (50, 100, 150, 200, 250 and 500 ppm), were tested.
8p
chauchaungayxua6
26-06-2020
16
2
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Among the tested five non-systemic, three combi- products, three systemic fungicides against Peziotrichum corticolum under laboratory condition, Bordeaux mixture, Copper oxychloride, Mancozeb, Carbendazim + Mancozeb, Hexaconazole + Zineb recorded maximum (100%) mean percent inhibition of P. corticolum, followed by Cuprous hydroxide (96.39%), Propiconazole (95.56%), Captan + Hexaconazole (86.39%), Difenconazole (80.74%), Hexaconazole (74.07%), Chlorothalonil (73.92%). Among the five plant extracts (botanicals), maximum mean percent inhibition of mycelial growth (22.
10p
chauchaungayxua6
26-06-2020
18
1
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Early blight is potentially destructive disease in tomato occurring on the oldest leaves as small, brownish which are due to foliar blight disease and it was caused by a foliar fungal pathogen Alternaria solani. The disease causes considerable yield as well as post-harvest losses. A. solani produced blackish, fluffy mycelium with septate, beaked conidia on PDA Eight plant extracts and four biocontrol agents were evaluated following poison food technique and dual culture.
6p
quenchua6
15-06-2020
8
2
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Biotic and abiotic stresses are major constraints in the production of groundnut. Among biotic stresses apart from bacterial and viral diseases, many fungal diseases are of economic importance. The major fungal diseases are Early leaf spot (Cercospora arachidicola), Late leaf spot (Cercosporidium personatum), Rust (Puccinia arachidis), Botrytis blight (Botrytis cinera), Aflarot/Yellow mould (Aspergillus flavus), Damping off (Pythium spp.
7p
nguathienthan5
04-06-2020
16
0
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Efficacy of three potential microbial bioagents, viz. Trichoderma viride, Bacillus thuringiensis, Pseudomonas fluorescens were evaluated against bacterial wilt of lettuce under hydroponic culture system. The microbial bioagents were tested in vitro for their antagonistic properties against Ralstonia solanacearum, the causal agent of bacterial disease in lettuce. Bioagents applied alone or as consortia, significantly reduced bacterial wilt pathogen in vitro producing varying sizes of inhibition zones in TTC medium.
10p
nguaconbaynhay5
11-05-2020
14
1
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Bacterial wilt caused by R. solanacearum is one of the most widely spread and destructive disease of ginger (Zingiber officinale Rosc.). An experiment on in vitro studies was carried out to find out the effectiveness of botanicals, bioagents and anti-bacterial chemicals to inhibiting the growth of R. solanacearum.
10p
chauchaungayxua5
05-05-2020
13
0
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Investigations were carried out on in vitro evaluation of isolated indigenous bioagents from carrot rhizosphere on inhibition of egg hatching and larval mortality of M. incognita. Indigenous bioagents viz., Trichoderma harzianum, T. viride, Pachonia lecani with 2×106 cfu/g, Pseudomonas fluorescens and Bacilus subtilis with 1×108 cfu/g tested at 25, 50, 75 and 100 per cent concentrations after 24, 48 and 72 hours after inoculation. Carbofuran 3G was used as check and untreated (distilled water) used as control.
8p
angicungduoc4
26-04-2020
12
1
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