R. Sarada Jayalakshmi Devi
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View article: Evaluation of Substrates and Carrier Material for Shelf Life Studies of Streptomyces Bioformulation
Evaluation of Substrates and Carrier Material for Shelf Life Studies of Streptomyces Bioformulation Open
Biological control with potential actinomycetes is receiving greater attention all over the world. Among actinomycetes, Streptomyces being root-colonizing and a rich producer of secondary metabolites has become one of the important promisi…
View article: Biochar as a strategy to manage stem rot disease of groundnut incited by Sclerotium rolfsii
Biochar as a strategy to manage stem rot disease of groundnut incited by Sclerotium rolfsii Open
Due to the pathogen’s ability to survive in the soil for longer durations, soil-borne diseases are often difficult to control. This study investigates the multifaceted impacts of biochar on the management of stem rot disease in groundnut a…
View article: Estimating the Economic Threshold Levels of Spodoptera frugiperda through Larval Damage and Adult Moth Trap Catches in Andhra Pradesh, India
Estimating the Economic Threshold Levels of Spodoptera frugiperda through Larval Damage and Adult Moth Trap Catches in Andhra Pradesh, India Open
The experiment was conducted during kharif (June–September, 2022) in the Rayalseema region of Kurnool, Chittoor, Kadapa and Ananthapuramu districts, Andhra Pradesh, India to determine the percentage of leaf and cob damage caused by Fall ar…
View article: Probing Behaviour of Brown Planthopper Nilaparvata lugens (Stal.) in the Resistant Germplasm Accessions
Probing Behaviour of Brown Planthopper Nilaparvata lugens (Stal.) in the Resistant Germplasm Accessions Open
A total of 1110 ENRRD rice germplasm accessions were evaluated for their resistance to brown planthopper, BPH in glass house by adopting internationally accepted standard seed box screening technique and scored on 0-9 scale by following th…
View article: Role of Social media in Agricultural Extension Service Delivery: A Stakeholder Analysis
Role of Social media in Agricultural Extension Service Delivery: A Stakeholder Analysis Open
Social media are modern-day digital communication means comprising various tools that allow interaction among people and information exchange worldwide.Its active users have reached around 4.48 billion globally as 2021.Since agricultural e…
View article: Field Evaluation of the Efficacy of Fungicides and Rhizosphere Bacterial Antagonists against Rice Stem Rot Disease
Field Evaluation of the Efficacy of Fungicides and Rhizosphere Bacterial Antagonists against Rice Stem Rot Disease Open
Rice stem rot disease in paddy cultivation leads to reduction of yield. Management of this disease is difficult as it is soil borne. In the present study, field trials were conducted during Rabi 2016-17 and early Kharif 2017-18 to assess t…
View article: Molecular characterization of virus species causing yellow mosaic disease of redgram in Andhra Pradesh
Molecular characterization of virus species causing yellow mosaic disease of redgram in Andhra Pradesh Open
Redgram is animportant drought tolerant leguminous crop in the semi-arid subtropics. Many fungal, bacterialand viral diseases are major constraints for redgram production, apart from all these diseases, yellowmosaic disease (YMD) is observ…
View article: Quantitative Trait Loci (QTL) Detection and Validation of Linked Markers Associated with Yellow Mosaic Virus Resistance in Urdbean [Vigna mungo (L.) Hepper] in Andhra Pradesh
Quantitative Trait Loci (QTL) Detection and Validation of Linked Markers Associated with Yellow Mosaic Virus Resistance in Urdbean [Vigna mungo (L.) Hepper] in Andhra Pradesh Open
Background: The YMD is one of the serious viral diseases in blackgram and is being transmitted by whitefly (Bemisia tabaci). The development of YMV resistant blackgram varieties is one of the important aspects for sustainable blackgram pro…
View article: Genetic Variability Studies of Yellow Mosaic Virus Infecting Blackgram [Vigna mungo (L.) Hepper] from Andhra Pradesh, India
Genetic Variability Studies of Yellow Mosaic Virus Infecting Blackgram [Vigna mungo (L.) Hepper] from Andhra Pradesh, India Open
Background: The productivity of blackgram is affected by many biotic and abiotic stresses. Among the biotic stresses, yellow mosaic disease (YMD) cause severe yield loss and it is caused by four distinct viruses (belongs to genus begomovir…
View article: In vitro Evaluation of Endophytic Bacteria for their efficacy against Chickpea Dry Root Rot Causing Pathogen (Rhizoctonia bataticola (Taub.) Butler)
In vitro Evaluation of Endophytic Bacteria for their efficacy against Chickpea Dry Root Rot Causing Pathogen (Rhizoctonia bataticola (Taub.) Butler) Open
A survey was conducted during January, 2017 rabi season in five major chickpea growing districts of Andhra Pradesh viz., Kurnool, Y.S.R Kadapa, Anantapuramu, Prakasam and Guntur to study the symptoms of dry root rot under field conditions …
View article: Distribution of Two Species of Begomoviruses Infecting Blackgram in Andhra Pradesh
Distribution of Two Species of Begomoviruses Infecting Blackgram in Andhra Pradesh Open
Background: Yellow mosaic diseases of blackgram is caused by two species of begomoviruses (MYMV, MYMIV). It is known fact that certain varities which are resistant to one species are susceptible to another species when screened by agroinoc…
View article: Management of root grub, Holotrichia reynaudi with different insecticides as seed treatment and soil application in groundnut
Management of root grub, Holotrichia reynaudi with different insecticides as seed treatment and soil application in groundnut Open
Field experiments on evaluation of different insecticides as seed treatment and soil application against root grub in groundnut was conducted in the microplots specially designed for the management of root grubs at Agricultural Research St…
View article: Evaluation of efficacy of antagonistic Trichoderma isolates against Sclerotium rolfsii under in vitro
Evaluation of efficacy of antagonistic Trichoderma isolates against Sclerotium rolfsii under in vitro Open
Fifty rhizosphere Trichoderma isolates (GT1 to GT50) were isolated from groundnut rhizosphere soil. When these isolates were screened against Sclerotium rolfsii in dual culture technique, Trichoderma isolates GT-9, 28, 34, 38 and 49 showed…
View article: Survey for disease incidence of groundnut collar rot, stem rot and root rot in Ananthapur, Kadapa, Chitttoor, Kurnool and Nellore districts of Andhra Pradesh
Survey for disease incidence of groundnut collar rot, stem rot and root rot in Ananthapur, Kadapa, Chitttoor, Kurnool and Nellore districts of Andhra Pradesh Open
Roving survey was carried out for studying groundnut collar rot, stem rot and root rot disease incidences in Ananthapur, Kadapa, Kurnool, Chittoor and Nellore districts. Ten mandals were surveyed in each district. Highest root rot incidenc…
View article: Biological characterization and host range of Tobacco Streak Virus (TSV)
Biological characterization and host range of Tobacco Streak Virus (TSV) Open
TSV isolates (GNAP7. SFAP17 and CUKA13) maintained on cowpea were cross inoculated on five popularly grown varieties and hybrids of groundnut (JL-24, K-6, Prasuna, K-9, Kadiri harithandra), sunflower (KBSH-44, DRSH-1, NDSH-1012, Mordent, S…
View article: Molecular Characterization of Phytoplasma Associated with Crops, Weeds and Forest Trees in Andhra Pradesh, India
Molecular Characterization of Phytoplasma Associated with Crops, Weeds and Forest Trees in Andhra Pradesh, India Open
Totally 32 weed hosts and crop plants were collected and the DNA was isolated from 32 weeds and crops showing phytoplasma disease symptoms and subjected to PCR amplification with phytoplasma specific primers R16F2n/R16R2. The result shows …
View article: Survey for the Incidence of Tobacco streak virus (TSV) in Field and Horticultural Crops
Survey for the Incidence of Tobacco streak virus (TSV) in Field and Horticultural Crops Open
Survey conducted for disease incidence of Tobacco streak virus (TSV) during Kharif 2014-15 and 2015-16 in Andhra Pradesh and Karnataka revealed disease incidence of 9-28 per cent in groundnut, 6-18 per cent in sunflower and 5-22 per cent i…
View article: Natural Occurrence of Phytoplasma Associated with Chickpea Phyllody in Andhra Pradesh
Natural Occurrence of Phytoplasma Associated with Chickpea Phyllody in Andhra Pradesh Open
Phytoplasma disease symptoms were observed on chickpea growing fields in Kurnool district, Andhra Pradesh, India. The symptoms included phyllody, pale green leaves, bushy appearance and excessive axillary proliferation. The causal agent of…
View article: Field Evaluation of the Strategies of Integration of Fungicides and Bio Control Agents for Efficient Management of Rice Stem Rot Disease
Field Evaluation of the Strategies of Integration of Fungicides and Bio Control Agents for Efficient Management of Rice Stem Rot Disease Open
Stem rot of rice, caused by Sclerotia oryzae is a serious threat to rice production in India. Fungicides only provide limited control of this pathogen but also have ill effects on the environment. In an attempt to develop better integrated…
View article: Evaluation of fungicides on Sclerotium oryzae, incitant of rice stem rot disease
Evaluation of fungicides on Sclerotium oryzae, incitant of rice stem rot disease Open
Stem rot caused by Sclerotium oryzae is one of the major diseases of rice and aserious threat to rice production in in India. Stem rot of rice is difficult to manage due to its soil borne nature. Hence, in the present study efficacy of 15 …
View article: Monitoring of groundnut leaf miner Aproaerema modicella (Deventer) with pheromone traps
Monitoring of groundnut leaf miner Aproaerema modicella (Deventer) with pheromone traps Open
Groundnut leaf miner, Aproaerema modicella (Deventer) belonging to the family Gelechiidae causing considerable yield losses to groundnut crop. An experiment was conducted to The studies on pheromone trap catches of groundnut leaf miner ind…
View article: Management of groundnut leaf miner, A. modicella with Nano scale NSKE formulations
Management of groundnut leaf miner, A. modicella with Nano scale NSKE formulations Open
Groundnut leaf miner, Aproaerema modicella (Deventer) belonging to the family Gelechiidae causing considerable yield losses to groundnut crop. An experiment was conducted to study management of groundnut leaf miner with nano scale NSKE for…
View article: Evaluation of plant extracts and plant essential oils against Sclerotium oryzae under in vivo conditions
Evaluation of plant extracts and plant essential oils against Sclerotium oryzae under in vivo conditions Open
Stem rot caused by Sclerotium oryzae is one of the major diseases of rice and a serious threat to rice production in India. In order to determine the bio efficacy of the botanicals and plant essential oils an experiment was conducted with …
View article: Antimicrobial effect of essential oils of some Fijian medicinal plant leaves on pathogenic bacteria
Antimicrobial effect of essential oils of some Fijian medicinal plant leaves on pathogenic bacteria Open
Fiji is highly populated with plants containing essential oils (EO). The essential oils extracted from the leaves of the selected Fijian leafy plants were screened against two Gram-negative bacteria ( Salmonella typhimurium , Pseudomonas a…
View article: Morphological and cultural characterization of colletotrichum capsici, incitant of blight of chickpea in Andhra Pradesh, India
Morphological and cultural characterization of colletotrichum capsici, incitant of blight of chickpea in Andhra Pradesh, India Open
In Andhra Pradesh, Chickpea is severely affected by wilt (Fusarium oxysporum f.sp. ciceri) and dry root rot (Rhizoctonia bataticola). In addition to these two diseases, Colletotrichum blight occurred in severe form during rabi 2009 and 201…