Blight disease of tomato

In the current work, A. flavus as an herb endophyte was selected to verify its role as plant growth-promoting and protection such as antimicrobial activity, IAA production, phosphorus solubilization and nutritional improvement of the tomato plant. So far, there is no previous investigation has been done on evaluating the potential of A. flavus as tomato plant growth promotion and to control Alternaria early blight disease of tomato.

7p schindler 30-12-2021 12 0   Download

Tomato is world’s one of the largest growing vegetable crop and ranks first among processing crops. It’s production suffers with many biotic and abiotic factors. Leaf blight disease caused by different species of Alternaria is one of the most dreadful diseases of tomato, causing huge economic losses. The present study was conducted in order to evaluate the efficacy of different fungicides against Alternaria alternata, one of cause for blight disease of tomato.

6p trinhthamhodang11 27-04-2021 25 1   Download

Early blight is the most devastating disease of tomato it is caused by pathogens i.e. Alternaria solani. In tropical and subtropical countries it creates hazardous effect. It is also a common problem in United Kingdom, Australia, India, Nepal and United States. It is one of the most common foliar diseases of tomatoes. The disease can occur over a wide range of climatic conditions, but is most prominent in areas with heavy dew, rainfall and high relative humidity. Every year sever disease appears in north India.

6p chauchaungayxua10 19-03-2021 18 3   Download

With an aim to find out the role of various weather factors on infection and development of early blight in tomato, the study was conducted.

7p nguaconbaynhay10 22-01-2021 6 1   Download

Hence the present investigation based on an integration of biological and cultural methods of blight and fruit rot management in tomato.

6p cothumenhmong9 04-01-2021 14 2   Download

Keeping in view of above facts present experiments were conduct on “in vitro efficacy of fungicides against Alternaria solani causing early blight disease in Tomato (Lycopersicon esculentum Mill.)”.

8p angicungduoc8 07-11-2020 9 1   Download

The tomato crop attacked by early blight, late blight, leaf spots, anthracnose, Dampimg off, buckeye rot, wilts and root rots. Among these Damping off diseases in tomato caused by Rhizoctonia solani is very common to see in nurseries, an increased incidence of blight caused by Rhizoctonia solani was noticed in recent past in major tomato growing areas of Ranga Reddy district of Andhra Pradesh.

7p nguathienthan8 20-10-2020 11 2   Download

The major insect pests and diseases which play most important role in the economic losses of tomato crop includes buck eye rot, late blight, viral diseases, fruit borers and leaf protection and growth regulation besides they are cheaper, safe and affordable for small and marginal farmers.

9p nguaconbaynhay7 15-08-2020 23 1   Download

Tomato crop is affected by different fungal pathogens and most devastating pathogen is Alternaria solani causing early blight disease and reducing the yield. Among different new chemical combinations, Azoxystrobin (11%) + Tebuconazole (18.3%) found effective in lowering the disease severity throughout the growing period of the crop.

4p nguaconbaynhay7 15-08-2020 12 1   Download

The experiment on management of early blight of tomato with the new combi molecule was conducted during Kharif 2018 in the bio-resource farm of Institute of organic farming, University of Agricultural Sciences, Dharwad. The new molecule and market sample of Trifloxystrobin 25%+Tebuconazole 50% WG, Azoxystrobin 23% SC, Copper Oxychloride 50% WP were evaluated against early blight incidence. The above chemicals sprayed two times at 15 days interval.

7p caygaocaolon6 30-07-2020 12 2   Download

The early blight caused by Alternaria solani is a severe constraint in tomato production and the disease intensity has been increasing day by day for the last few years in India due to changes in the environment. The field experiment was carried out to understand the development of early blight on tomato with respect to weather conditions during kharif 2018-19 at AAU, Anand.

6p angicungduoc6 22-07-2020 7 1   Download

Tomato is one of the most extensively cultivated vegetables and is a rich source of nutrients such as vitamins, antioxidants and minerals for a balanced human diet. World over, early blight (EB) caused by Alternaria solani Sorauer is limiting tomato production and causes great losses. In total, 350 tomato genotypes from ICAR-National Bureau of Plant Genetic Resources (ICAR-NBPGR), New Delhi were evaluated for early blight resistance under epiphytotic conditions at ICARIndian Institute of Vegetable Research (ICAR-IIVR), Varanasi.

7p angicungduoc6 22-07-2020 15 0   Download

Studies were undertaken to evaluate the plant extracts, fungicides and bio-agents against early blight disease of tomato caused by Alternaria solani under in vitro and vivo conditions. Among the four evaluated plant extracts against A. solani, neem leaf extract at 15% (w/v) was found to be most effective in inhibiting the mycelial growth of the pathogen with inhibition of 52.36 per cent, followed by combination of garlic clove and green chilli extract with the inhibition of 50.42 per cent.

7p angicungduoc6 22-07-2020 17 1   Download

Tomato is one of important vegetable crop cultivated in worldwide. Among the diseases which causing tomato early blight caused by Alternaria solani is serious disease. The present investigation was undertaken to assess the bio-efficacy of mangroves at different concentrations against Alternaria solani causing tomato early blight disease under in vitro condition.

7p angicungduoc6 22-07-2020 14 1   Download

Quantitative trait locus (QTL) mapping is a highly effective approach for studying genetically complex forms of plant disease resistance. With QTL mapping, the roles of specific resistance loci can be described, race-specificity of partial resistance genes can be assessed and interactions between resistance genes, plant development and the environment can be analysed (Young, 1996). DNA markers tightly linked to quantitative resistance loci (QRLs) controlling QDR can be used for marker-assisted selection (MAS) to incorporate these valuable traits.

18p angicungduoc6 20-07-2020 8 1   Download

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   Download

Tomato crop exhibited symptoms occurring on the oldest leaves as small, brownish to black lesions which are due to foliar blight disease and it was caused by a complex of mycoflora viz, Alternaria solani, Fusarium oxysporum and Curvularia lunata. The disease complex causes considerable yield as well as post-harvest losses. A. solani produced blackish, fluffy mycelium with septate, beaked conidia on PDA. Fusarium oxysporum exhibited dull to fluffy white mycelium with slight faint reddish tinge at the middle.

5p gaocaolon5 14-06-2020 12 2   Download

A field survey was conducted in major tomato growing districts of Tamil Nadu viz., Coimbatore, Dharmapuri, Krishnagiri, Salem and Madurai during 2015-2016. Groundnut bud necrosis virus (GBNV) infection on tomato exhibited the symptoms viz., chlorotic and necrotic spots on leaves, necrosis of growing young buds (bud blight), bronzing, wilting and stunting. The per cent disease incidence of GBNV ranged from 18.6% to 35.3% in the above districts. A high per cent disease incidence of 35.3% was recorded in Thondamuthur village of Coimbatore district. Cowpea cv.

9p angicungduoc5 14-06-2020 5 0   Download

Tomato (Lycopersicon esculentum Mill) is one of the most important vegetable crops of the family Solanaceae. Survey for prevalence and severity of late blight of tomato was conducted in three vegetable growing districts of Kashmir valley viz. Anantnag, Baramulla and Budgam. Maximum disease incidence (10.24%), intensity (3.79%) and infected fruits (4.06%) were observed in district Anantnag, followed by district Budgam with 9.67% disease incidence, 3.14% disease intensity and 3.50% infected fruits and the least disease incidence (09.33%), disease intensity (3.04%) and infected fruits (3.

12p angicungduoc5 12-06-2020 10 1   Download

Alternaria blight is the most common and devastating disease caused by Alternaria cucumerina var. cyamopsidis in Clusterbean. This fungus grows well in Potato dextrose agar and Tomato dextrose agar medium under in vitro conditions. The growth of the fungus was tested using fifteen different media. PDA appeared to be better than other media for the growth of Alternaria cucumerina var. cyamopsidis. The growth characteristics of the fungus such as colour of the colony and sporulation were also different in different culture media. The colony of the fungus was dark brown in colour.

6p kethamoi5 03-06-2020 8 0   Download