scholarly journals Leaf spot disease of coconut seedling and its eco-friendly management

2014 ◽  
Vol 11 (2) ◽  
pp. 199-208
Author(s):  
MAH Khan ◽  
I Hossain
Keyword(s):  
Relative Humidity ◽  
Disease Management ◽  
Leaf Spot ◽  
Comparative Effectiveness ◽  
Management Practice ◽  
Leaf Spot Disease ◽  
Weather Factors ◽  
Environment Friendly ◽  
Seedling Disease ◽  
Spot Disease

The effect of weather on prevalence of seedling diseases of coconut during 2010-11 and 2011-12 in different areas of Bangladesh was studied to develop an environment friendly disease management practice. Pestalotia palmarum was isolated and identified from leaf having spot. Incidence and severity of grey leaf spot at seedling stage were determined and significant variations were observed depending on weather factors as well as locations. Occurrence of seedling disease was significantly influenced by temperature, rainfall and relative humidity. Comparative effectiveness of BAU-Biofungicide either alone or in combination with two fungicides viz. Bavistin or Dithane M-45 was evaluated on coconut seedling in the nursery. Among the treatments applied, Trichoderma harzianum based BAU-Biofungicide either alone or in combination with Bavistin (0.2%) as an excellent biocontrol means in controlling leaf spot disease of coconut. DOI: http://dx.doi.org/10.3329/jbau.v11i2.19894 J. Bangladesh Agril. Univ. 11(2): 199-208, 2013

scholarly journals Effects of Temperature, Rainfall and Relative Humidity on Leaf Spot of Jackfruit Seedling and its Eco-friendly Management

1970 ◽  
Vol 9 (1-2) ◽  
pp. 126-136
Author(s):  
MSM Chowdhury ◽  
I Hossain
Keyword(s):  
Relative Humidity ◽  
Leaf Spot ◽  
Management Practice ◽  
Leaf Spot Disease ◽  
Weather Factors ◽  
Environment Friendly ◽  
Spot Disease ◽  
Causal Pathogen ◽  
Seedling Leaf ◽  
Seedling Diseases

Experiments were carried out during 2005-08 to study the effect of weather prevalence of seedling diseases of jackfruit in different areas of Bangladesh and develop an environment friendly disease management practice. Leaf spot causal pathogen Colletotrichum gloeosporioides was identified. Incidence and severity of leaf spot at seedling stage were studied and significant variations were observed depending on weather factors. Occurrence of seedling diseases was significantly influenced by temperature, rainfall and relative humidity. Comparative effectiveness of BAU-biofungicide either alone or in combination with two fungicides viz. Cupravit and Bavistin were evaluated on jackfruit in the nursery. Among the treatments applied, Trichoderma harzianum based BAU-Biofungicide showed best result in controlling leaf spot disease. Keywords: Jackfruit seedling; leaf spot disease; ecofriendly management; BAU-Biofungicide DOI: http://dx.doi.org/10.3329/agric.v9i1-2.9487The Agriculturists 2011; 9(1&2): 126-136

scholarly journals Impact of Weather on Sigatoka Leaf Spot of Banana (Musa spp. L.) and its Ecofriendly Management

2016 ◽  
Vol 13 (2) ◽  
pp. 44-53
Author(s):  
M A H Khan ◽  
I Hossain ◽  
M U Ahmad
Keyword(s):  
Disease Management ◽  
Leaf Spot ◽  
Management Practices ◽  
Management Practice ◽  
Foliar Spray ◽  
Control Measures ◽  
Environment Friendly

A study was carried out during July 2010 to April 2012 to understand the effect of weather prevalence on sigatoka disease of banana suckers in different areas of Bangladesh and to develop an environment friendly disease management practice.  Four locations viz. Dinajpur, Bogra, Rangpur and Madhupur were surveyed. To find out suitable and ecofriendly management practices for  controlling sigatoka disease of banana, seven  treatments were used viz. i) Soil drenching with BAU- Biofungicide (2%), ii) BAU-Biofungicide as foliar spray (2%), iii) Soil drenching with BAU-Biofungicide (2%) plus foliar spray (2%), iv) Bavistin (carbendazim) spray (0.2%), v) Dithane M-45 (mancozeb) spray (0.2%), vi) Soil drenching with BAU-Biofungicide (2%) plus Bavistin spray (0.2%); and vii) control. The average highest incidence (26.42%) and severity (22.84%) of sigatoka disease of banana suckers were recorded during October at Bogra, while the lowest incidence (9.75 %) and severity (8.51%) were recorded during January at Dinajpur. Out of the control measures employed, BAU-Biofungicide (2%) either alone or in combination with Bavistin (0.2%) was found as an excellent biocontrol means for controlling sigatoka disease of banana suckers.DOI: http://dx.doi.org/10.3329/agric.v13i2.26587The Agriculturists 2015; 13(2) 44-53

scholarly journals Effect of Various Factors on the Development of Leaf Spot Disease in Mulberry

2012 ◽  
Vol 5 (1) ◽  
pp. 205-209 ◽  
Author(s):  
L Ghosh ◽  
FA Neela ◽  
MF Mahal ◽  
MJ Khatun ◽  
MR Ali
Keyword(s):  
Relative Humidity ◽  
Leaf Spot ◽  
Fertilizer Application ◽  
Leaf Spot Disease ◽  
Disease Development ◽  
Plant Spacing ◽  
Spot Disease ◽  
Lower Infection ◽  
Npk Fertilizer ◽  
Leaf Pathogen

Effect of various factors such as temperature, relative humidity, balanced fertilizer and plant spacing on the development of leaf  spot disease in mulberry caused by Cercospora moricola was studied. High disease development was recorded in the month of August and September when outdoor temperature and relative humidity were 25-30 ºC and above 80%, respectively. Application of balanced fertilizer and plant spacing on this disease development was also studied and showed a distinct effect on severity of this disease. A balanced dose application of NPK fertilizer decreased disease severity to 6-8%. Balanced fertilizer application in the soil resulted lower infection by leaf pathogen in comparison with imbalanced fertilizer application in the soil. Disease development was also found to be high at close plant spacing (60 × 60) cm than distance spacing (90 × 90) cm. DOI: http://dx.doi.org/10.3329/jesnr.v5i1.11583 J. Environ. Sci. & Natural Resources, 5(1): 205 - 209, 2012

scholarly journals Role of weather factors in development of late leaf spot (Phaeoisariopsis personata) on groundnut (Arachis hypogaea)

MAUSAM ◽  
2021 ◽  
Vol 68 (2) ◽  
pp. 299-308
Author(s):  
UTPAL DEY ◽  
D. N. DHUTRAJ ◽  
DIGANGGANA TALUKDAR ◽  
ANUP DAS
Keyword(s):  
Relative Humidity ◽  
Wind Velocity ◽  
Leaf Spot ◽  
Weather Condition ◽  
Maximum Temperature ◽  
Leaf Spot Disease ◽  
Late Leaf Spot ◽  
Spot Disease ◽  
Average Maximum ◽  
Rainy Days

The field experiment was conducted during Kharif 2012 and 2013 to find out the influence of weather parameters viz., temperature, relative humidity, rainfall, rainy days and wind velocity on the intensity of late leaf spot disease and defoliation in four groundnut cultivars viz., JL-24, LGN-1, TAG-24 and TG-26. The prevailing weather condition viz., average temperatures of 30.92 °C (max.) and 22.31 °C (min.), average RH of 89.67 % (morning) and 64.25 % (evening), well distributed average rainfall of 50.33 mm, average rainy days of 2.67 and average wind velocity of 4.24 km/hr were found to be conducive for the initiation, development and spread of late leaf spot disease in susceptible groundnut Cv. JL-24, TAG-24 and tolerant Cv. LGN-1, TG-26. As a result, overall average maximum disease intensity of 33.97 (21.96 to 46.37 %) per cent and 29.06 (18.62 to 39.01 %) per cent, were recorded in JL-24 and TAG-24, respectively. Groundnut Cv. JL-24 and TAG-24 (susceptible) exhibited comparatively maximum average defoliation in the range of 6.65 to 14.05 (Av. 10.29 %) and 5.64 to 11.82 per cent (Av. 8.80 %), respectively. The correlation coefficient between weather variables and disease intensity in both the years indicated that maximum temperature had negative and non significant effect in all the groundnut cultivars; whereas, minimum temperature had positive and significant effect on the disease intensity in all the groundnut cultivars. Relative humidity (morning and evening) played significant positive role on the disease intensity in all the groundnut cultivars.  

TWO NEW SEVERE LEAF SPOT DISEASE ON FOREST TREES OF JALGAON (MAHARASTRA) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
S. A. FIRDOUSI
Keyword(s):  
Leaf Spot ◽  
Fungal Disease ◽  
Leaf Spot Disease ◽  
Forest Trees ◽  
First Report ◽  
Spot Disease ◽  
Severe Leaf

During the survey of the forest fungal disease, of Jalgaon district, two severe leaf spot diseases on Lannae coromandelica and ( Ougenia dalbergioides (Papilionaceae) were observed in Jalgaon, forest during July to September 2016-17. The casual organism was identified as Stigmina lanneae and Phomopsis sp. respectively1-4,7. These are first report from Jalgaon and Maharashtra state.

Rapid Inoculation Technique and Biological Control of Leaf Spot Disease in Oil Palm

2019 ◽  
Vol 2 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Delia Agustina ◽  
◽  
Cahya Prihatna ◽  
Antonius Suwanto ◽  
◽  
...  
Keyword(s):  
Biological Control ◽  
Oil Palm ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Inoculation Technique ◽  
Spot Disease

scholarly journals Registration of three peanut allotetraploid interspecific hybrids resistant to late leaf spot disease and tomato spotted wilt

2021 ◽  
Author(s):  
Ye Chu ◽  
H. Thomas Stalker ◽  
Kathleen Marasigan ◽  
Chandler M. Levinson ◽  
Dongying Gao ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Interspecific Hybrids ◽  
Leaf Spot Disease ◽  
Late Leaf Spot ◽  
Spot Disease ◽  
Tomato Spotted Wilt
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