scholarly journals Evaluation of fungicides for management of anthracnose disease of black gram (Vigna mungo l.) in growing areas of district Jhansi of Bundelkhand region

2020 ◽  
Vol 12 (2) ◽  
pp. 110-114
Author(s):  
Adesh Kumar ◽  
Roomi Rawal ◽  
Nishi Roy ◽  
Atik Ahamad ◽  
Hitesh Kumar
Keyword(s):  
Disease Control ◽  
Disease Severity ◽  
Field Condition ◽  
Seed Treatment ◽  
Disease Incidence ◽  
Foliar Spray ◽  
Uttar Pradesh ◽  
Vigna Mungo ◽  
Black Gram ◽  
Anthracnose Disease

Black gram (Vigna mungo L.) growing areas of district Jhansi coming under Bundelkhand region of Uttar Pradesh were surveyed during Kharif 2018 for the occurrence of anthracnose disease of black gram. A total of 22 villages were visited under six blocks of Jhansi during this period. Blockwise comparison of the survey in Jhansi revealed that less mean disease incidence (10%) and severity (4.0%) occurred in the Chirgaon block. Highest disease incidence (24%) and severity (12%) were observed in block Moth.  The block Bangra, Babina, Badagaon, and Bamour secured disease incidence 23.5, 20, 16.44 and 15% and severity 15.14, 12, 7.44 and 8.5% respectively. Nine fungicides (viz. [email protected]%, tilt @0.1%, [email protected]%, [email protected]%, [email protected]%, dithane [email protected]%, amistar top, [email protected]% and [email protected]%) were tested against anthracnose disease of black gram under field condition.  Among them, seed treatment with carbendazim@ 3gram/kg seed and foliar spray of mixture of azole and strobilurin group T3- [email protected] ( tebuconazole + trifloxystrobin) and T7-amistar [email protected]%  (azoxystrobin+ difenoconazole) were found significantly (at 0.05%) superior over the rest of treatments, both showed minimum (6%) disease severity with maximum (78.51%) disease control. Significant (at 0.05%) increase in yield (47.5%) also observed in both treatments T3 and T7.  The treatment T1- Spray of  [email protected]%, T2-  Spray of  Tilt @0.1%, T4- Spray of  [email protected]%, T5- Spray of  [email protected]%,  T8- Spray of [email protected]%, T9- Spray of [email protected]% also showed good results in reducing the black gram anthracnose disease severity per cent (64.29, 57.14, 64.28, 57.14, 71.42 and 64.28 and also increased the yield per cent 37.5, 35, 42.5, 36.25, 45 and 45 respectively.

scholarly journals Management of sheath blight in rice through application of Validamycin, Trichoderma harzianum and Pseudomonas fluorescence

2010 ◽  
Vol 2 (1) ◽  
pp. 121-125 ◽  
Author(s):  
Ramji Singh ◽  
B.P. Singh ◽  
Alka Singh ◽  
Udai Prakash Singh ◽  
R.S. Kureel
Keyword(s):  
Disease Severity ◽  
Field Condition ◽  
Trichoderma Harzianum ◽  
Seed Treatment ◽  
Disease Incidence ◽  
Sheath Blight ◽  
Rice Grain ◽  
Percent Reduction ◽  
Seedling Root ◽  
Initiation Stage

Eleven different combinations of Trichoderma harzianum, Psedumonas fluorescens and Validamycin 3L, were applied at different crop stages viz. seed, seedling, tillering and symptoms initiation along with one application of Carbendazim as standard control to test their efficacy against sheath blight of rice caused by Rhizoctonia solani under field condition. One application of Carbendazim @ 0.1% at the time of symptoms initiation (with 81.36 percent reduction of disease incidence, 83.17 percent reduction in disease severity and 62.92 percent inhancement in yield) and seed treatment with Trichoderma harzianum and seedling root dipping with Pseudomonas fluorescens and two spraying of Validamycin i.e. at tillering and symptoms initiation stages (with 69.10 percent reduction of disease incidence,83.17 percent reduction in disease severity and 62.49 percent inhancement in yield) were found to be equally and highly effective in reducing the sheath blight severity and in increasing rice grain yield also. One spraying of Validamycin at symptoms initiation stage was comparatively less effective (29.54 per cent reduction in disease incidence,53.46 per cent reduction in disease severity and 47.76 per cent enhancement in yield ) than one spraying of Carbendazim at symptoms initiation stage.

Bayleton® Seed Treatment Combined with Foliar Spray Improves Fusiform Rust Control in Nurseries

1984 ◽  
Vol 8 (1) ◽  
pp. 51-54
Author(s):  
S. J. Rowan
Keyword(s):  
Seed Germination ◽  
Seed Treatment ◽  
Disease Incidence ◽  
Foliar Spray ◽  
Artificial Inoculation ◽  
Fusiform Rust ◽  
Complete Control ◽  
Infection Period ◽  
Foliar Sprays ◽  
Forest Nurseries

Abstract Bayleton foliar sprays eradicated all fusiform rust infections when applied up to 7 days after artificial inoculation and eradicated a significant number of infections when applied 28 days after inoculation. A combination of seed treatment and foliar spray provided complete control when the spray was applied up to 14 days after inoculation and further reduced disease incidence when the foliar spray was applied 28 days after inoculation. Foliar sprays applied before inoculation prevented infections up to four weeks after application but sprays applied to nongerminated seed did not prevent infections in seedlings originating from these seed. Seed treatment would, therefore, significantly improve fusiform rust control in forest nurseries. Without seed treatment, applications of both ferbam and Bayleton during the period of seed germination may be necessary to adequately control the disease in high rust-hazard nurseries. When seed are treated with Bayleton, the first foliar spray must be applied 14 days after germination begins or no later than 7 days after the first infection period following the first 14 days of seed germination. Thereafter, sprays should be applied at intervals not to exceed 35 days.

Eco-friendly management of wilt caused by fusarium oxysporum f.sp. Ciceri in chickpea

2015 ◽  
Author(s):  
Chandar Kala ◽  
S. Gangopadhyay ◽  
S. L. Godara
Keyword(s):  
Population Dynamics ◽  
Disease Control ◽  
Fusarium Oxysporum ◽  
Seed Treatment ◽  
Disease Incidence ◽  
Trichoderma Viride ◽  
Organic Amendments ◽  
Chickpea Wilt ◽  
Maximum Inhibition

Antagonistic potentiality of Trichoderma viride, T. harzianum and Pseudomonas fluorescens were evaluated against Fusarium oxysporum f. sp. ciceri under in vivo conditions. The effect of organic amendments viz; farm yard manure, vermicompost and mustard cake on disease control potentiality of test antagonists against chickpea wilt and on population dynamics of the antagonists and pathogen in soil was also studied. Maximum inhibition of mycelial growth of F. o. f. sp. ciceri was recorded in presence of P. fluorescens (%) followed by T. harzianum (%) and T. viride (%). Seed treatment with P. fluorescens was more effective in suppressing the disease incidence as compared to T. harzianum and T. viride. The disease control efficacy and population dynamics of all the three test antagonists was enhanced in response to application of organic amendments. Among the three organic amendments tested, mustard cake was most effective in enhancing the disease control potentiality of these antagonists.

Designer seed for enhancement of yield in black gram Vigna mungo L.

2016 ◽  
Vol 50 (5) ◽  
Author(s):  
K. Sujatha ◽  
S. Ambika
Keyword(s):  
Seed Yield ◽  
Untreated Control ◽  
Polymer Coating ◽  
Field Experiments ◽  
Disease Incidence ◽  
Vigna Mungo ◽  
Black Gram ◽  
Yield Performance ◽  
Pod Yield

Field experiments were carried out during 2012 and 2013, to identify the yield performance of black gram designer seed. The treatment consisted of seeds fortified with KCl 1% for 6 h followed by polymer coating @ 3ml/ kg + Carbendazim @ 2g/kg + imidachloprid @ 2ml/kg + Tichoderma viride @ 4g/kg + Azospirilum lipoferum @ 40g/kg. The effect was more beneficial through increased pods/plant, pod yield/plot (g) and seed yield/ plant (g), earlier days to 50% flowering and pest and disease incidence compared to untreated control.

scholarly journals Efficacy of Different Fungicides Against Rhizome Rot Disease of Ginger Under Farmer Field Condition in Salyan, Nepal

2021 ◽  
Vol 6 (6) ◽  
Author(s):  
Resham B ◽  
◽  
Amrita P ◽  
Anish P ◽  
Bikash G ◽  
...  
Keyword(s):  
Field Experiment ◽  
Disease Control ◽  
Disease Severity ◽  
Disease Incidence ◽  
Trichoderma Viride ◽  
Germination Percentage ◽  
Tiller Number ◽  
Leaf Number ◽  
Rot Disease ◽  
Rhizome Rot

A study was conducted from March to August 2020 to evaluate the effectiveness of different fungicides for the management of rhizome rot disease in ginger. The field experiment was conducted under Randomized Complete Block Design with four replication and five treatments; Carbendazim 50% WP @ 1gm/litre + Mancozeb 75% WP @ 2.5gm/litre, Metalaxyl 8% WP + Mancozeb 64% WP @ 2gm/litre, Carbendazim 50% WP @ 1gm/litre, Trichoderma viride @ 5gm/litre and control. The height of pseudo stems, leaf number, germination percentage, tiller number, disease incidence, disease severity and percentage of disease control was recorded during field experiment. There was no significant effect of pre sowing rhizome treatment in height of pseudostems, leaf number and germination percentage. The highest tiller number (3.40) was found with Carbendazim 50% WP @1gm/litre + Mancozeb 75% @ 2.5gm/ litre treatment and lowest tillers number (2.95) was found with control. The highest disease incidence (34.37) and severity (30.03) was found in control plot whereas the lowest disease incidence (2.58) and disease severity (2.46) was found with Carbendazim 50% @ 1gm/litre treatment + Mancozeb 75% @ 2.5gm/litre. Similarly, the highest percentage disease control (85.61) was found with Carbendazim 50% @ 1gm/litre + Mancozeb 75% @ 2.5gm/litre treated rhizome and the lowest (54.14) was found with Trichoderma viride @ 5gm/litre treatment. Therefore, seed treatment with Carbendazim 50%WP @ 1gm/litre + Mancozeb 75% WP @ 2.5 gm/litre is found effective among other fungicides in Bagchaur-3, Salyan and is recommended for enhancing tiller and reducing rhizome rot disease incidence and severity in ginger.

Survey for the powdery mildew of black gram [Vigna mungo (L.) Hepper] in parts of Northern Karnataka, India.

2017 ◽  
Vol 6 (03) ◽  
pp. 5309
Author(s):  
Shripad Hanmntrao Kulkarni* ◽  
Channaveeresh T. S.
Keyword(s):  
Powdery Mildew ◽  
Disease Severity ◽  
Vigna Mungo ◽  
Black Gram ◽  
Rabi Season ◽  
Erysiphe Polygoni ◽  
Severity Of The Disease ◽  
Cent Disease

Powdery mildew caused by Erysiphe polygoni DC is one of the major constraints in the production of black gram, which lead to a potential decrease in yield (40-90%). In order to know the severity of black gram powdery mildew, the roving survey was carried out to know the severity of the disease in five districts of northern Karnataka viz., Belgaum, Dharwad, Gadag, Haveri and Uttara Kannada districts during Kharif and Rabi season of 2012-13. Maximum mean per cent disease severity (PDI) was observed in Belgaum district (68.72%) followed by Dharwad district (59.73%), Haveri district (52.10%) and Uttara Kannada district (44.59%). Whereas, minimum per cent disease severity (PDI) was noticed in Gadag district (20.23%).

Effect of the addition of a fungicide to glyphosate applied postemergence on crop injury, disease control, and corn yield

2018 ◽  
Vol 98 (4) ◽  
pp. 971-974 ◽  
Author(s):  
Nader Soltani ◽  
David C. Hooker ◽  
Jonathan Brinkman ◽  
Peter H. Sikkema
Keyword(s):  
Disease Control ◽  
Disease Severity ◽  
Disease Incidence ◽  
Corn Yield ◽  
Corn Production ◽  
Crop Injury

The addition of pyraclostrobin, pyraclostrobin/fluxapyroxad, pyraclostrobin/metconazole, trifloxystrobin/propiconazole, azoxystrobin/propiconazole, and trifloxystrobin/prothioconazole fungicides to glyphosate reduced disease incidence up to 19% and disease severity up to 4% compared with glyphosate alone. Fungicides evaluated can be safely mixed with glyphosate for corn production, but fungicide use was not associated with increased corn yield.

scholarly journals Disease Incidence on Old Garden Roses in the South

HortScience ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 590A-590
Author(s):  
Beth Clendenen ◽  
B.K. Behe ◽  
K.L. Bowen
Keyword(s):  
Disease Resistance ◽  
Disease Control ◽  
Disease Severity ◽  
Disease Incidence ◽  
Natural Resistance ◽  
Treatment Control ◽  
Diplocarpon Rosae ◽  
Significant Incidence ◽  
Overall Performance ◽  
Rain Events

Eleven rose cultivars were field planted and evaluated weekly for disease, defoliation, and overall vigor in order to compare natural resistance to blackspot (Diplocarpon rosae). Alternative treatments were also compared for efficacy in low-maintenance disease control. Treatments included a bimonthly application of chlorothalonil, a bimonthly application of a horticultural oil, an application of chlorothalonil based on rain events, and a no-treatment control. Cultivars showed significant differences in disease severity, defoliation, and overall performance, with old garden rose varieties showing more natural disease resistance than modern susceptible varieties included in the study. Chlorothalonil applied on a 14-day spray schedule did provide a significant decrease in blackspot disease severity when compared to other treatments. A significant incidence of secondary disease including Cercospora rosicola and Botrytis cinerea occurred on old garden rose varieties. No treatment differences were found for these diseases. `Belinda's Dream', `The Fairy', and `Red Mediland' ranked highest in overall performance throughout the season.

Evaluation of different fungicides and antagonists In vitro and In vivo condition against Alternaria blight of pigeonpea

2018 ◽  
Author(s):  
Laxman Prasad Balai ◽  
R. B. Singh ◽  
Asha Sinha ◽  
S. M. Yadav
Keyword(s):  
Disease Control ◽  
Mass Culture ◽  
Mycelial Growth ◽  
Seed Treatment ◽  
Foliar Spray ◽  
Dual Culture ◽  
Plate Method ◽  
Alternaria Blight

Efficacy of bio agents and systemic and non-systemic fungicides @ 50, 100, 200, 250 and 500 ppm were evaluated In vitro against Alternaria tenuissima causing Alternaria blight of pigeonpea. The relative efficacy of bio agents were studied in dual culture plate method showed that Hypocrea rufa was found most effective antagonist against test pathogen followed by T. harzianum. Efficacy of six fungicides was tested in poisoned food technique. Among the six fungicides tested, mancozeb was found most effective against test pathogen followed by Chlorothalonil and Iprodione. Propineb was least effective against mycelial growth of test pathogen. Raise in concentration of fungicides was more effective in inhibiting the mycelial growth of the pathogen. Field condition studies were found out to be the effect of seed treatment, foliar spray, seed treatment+ foliar spray with six fungicides and two bio agents and their combination used as against pathogen. Artificial inoculation of mass culture of A. tenuissima was done in the inoculated seed treatment and after foliar spray on the plants sixty DAS. Amongst them twenty five treatments, combination of Mancozeb with H. rufa was found most effective in reducing the disease intensity and disease control followed by Mancozeb with T. harzianum and Mancozeb alone, respectively. While, T. harzianum alone was least effective and maximum disease intensity recorded as a compared to control followed by T. harzianum with double dose and T. harzianum and H. rufa combination treatment, respectively. In case of both seed treatment and foliar spray of Mancozeb with H. rufa was found most effective in reducing the disease intensity and disease control followed by combination of Mancozeb with T. harzianum and Mancozeb alone, respectively. Whereas, least effective and maximum disease intensity and disease control were observed T. harzianum alone as compared to control.

scholarly journals Evidence that Prohexadione-Calcium Induces Structural Resistance to Fire Blight Infection

2009 ◽  
Vol 99 (5) ◽  
pp. 591-596 ◽  
Author(s):  
Molly J. McGrath ◽  
Jessica M. Koczan ◽  
Megan M. Kennelly ◽  
George W. Sundin
Keyword(s):  
Cell Wall ◽  
Disease Control ◽  
Disease Severity ◽  
Growth Regulator ◽  
Fire Blight ◽  
Shoot Growth ◽  
Disease Incidence ◽  
Wall Width ◽  
Structural Resistance ◽  
Prohexadione Calcium

Mechanisms of fire blight control by the shoot-growth regulator prohexadione-calcium (ProCa) were investigated by comparing disease development in ProCa-treated potted apple trees (cv. Gala) to paclobutrazol (another shoot-growth regulator)-treated and nontreated trees and in ProCa-treated cv. McIntosh trees in the field. Twenty-eight days after inoculation with Erwinia amylovora Ea110, disease incidence on ProCa- and paclobutrazol-treated shoots was significantly reduced compared with that on nontreated shoots. Disease severity (percent shoot length infected) was also significantly lower on both ProCa- and paclobutrazol-treated shoots than on nontreated shoots. However, bacterial populations within inoculated shoots were high and bacterial growth occurred in all treatments. In addition, the mean cell wall width of the cortical parenchyma midvein tissue of the first and second youngest unfolded leaves of ProCa- and paclobutrazol-treated shoots was significantly wider both 0.5 and 2 cm from the leaf tips compared with the cell walls of the nontreated tissue. Taken together, these results suggest that reduction of fire blight symptoms by ProCa and paclobutrazol is not the result of reduced populations of E. amylovora in shoots. Moreover, because paclobutrazol also reduced disease severity and incidence, changes in flavonoid metabolism induced by ProCa but not paclobutrazol does not appear to be responsible for disease control as suggested in recent literature. Finally, although this study did not directly link disease control to the observed cell wall changes, the possibility that an increase in cell wall width impedes the spread of E. amylovora should be investigated in more depth.

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