Aim: Powdery mildew, incited by Erysiphe polygoni D.C, is a prominent foliar disease of blackgram (Vigna mungo L.) that adversely impacts all developmental stages, culminating in premature defoliation and yield losses reaching up to 70%. The initiates as subtle, white powdery flecks on the abaxial surface lower leaves subsequently proliferating into dense mycelial colonies envelop aerial plant parts, persisting until physiological maturity. Despite its economic significance, epidemiology...

Abstract Randomly amplified polymorphic DNA (RAPD) was used to examine the genetic variability among 10 isolates of Trichoderma representing three species and their ability antagonize Fusarium oxysporum f. sp. ciceris causing chickpea wilt using dual culture assay volatile non‐volatile compound production. Using oligonucleotide primers, we are able distinguish . Primer OPA 13 efficiently differentiated all in except T 2 viride Some other primer as also showed species‐specific banding...

Yellow leaf disease (YLD) of sugarcane caused by Sugarcane Leaf Virus (SCYLV, a Polereovirus the Luteoviridae family) is serious affecting crop production and productivity in India.Present study was carried out to detect presence ScYLV YLD infected samples collected from different parts Andhra Pradesh Telangana states both stem sap tissue with DAS-ELISA RT-PCR tools.Some field showed mixed infection SCYLV SCMV (Sugarcane Mosaic Virus) confirmed electron microscopy studies.RT-PCR ELISA assays...

Ciguatoxin (CTX) is a visibly unidentifiable, colourless, odourless, heat stable and lipid soluble polyether marine biotoxin associated with human illness. Marine dinoflagellates under the genus Gambierdiscus are responsible for producingciguatoxins (CTX). The ciguatoxin gets accumulated in herbivorous fishes, biotransformed carnivorous fishes finally reach fish consumers. In January 2016, individuals who consumed red snapper Trivandrum, Kerala, India weresuspected to be intoxicated...

Endophytes are beneficial microbes that capable of promoting growth, besides protecting colonized plants against plant pathogens.These either bacterial, fungal or actinomycetes in plants.In the study, endophytic bacteria isolated from sugarcane with their characterization related to growth promotion and pathogen suppression have been reported.Roots, shoots leaves rooted tissue culture plantlets cultivars 87A298 2009A107 were excised aseptically bacterial strains.The strains identified using...

Eight native strains of Pseudomonas spp. were isolated from rhizosphere various sugarcane clones on agar using standard protocols. These characterized for antagonistic traits red rot pathogen in vitro and Plant growth-promoting (PGP) activities greenhouse up to 30 days single node setts portrays as sett treatment (@109 CFU ml-1). The promising isolate was species level by PCR amplification 16S rDNA region specific primers. Elite strain identified P. putida AKP-1. Our results indicated that,...

Yellow leaf disease (YLD) of sugarcane caused by yellow virus (SCYLV), a Polerovirus the Luteoviridae family is becoming major threat to cultivation in north coastal region Andhra Pradesh state.As YLD mainly transmitted through sett borne inoculum, present study was carried out evaluate efficacy some disinfectants on reduction inoculum load treatment and confirmed DAS-ELISA.Further, their impact cane growth, yield juice quality parameters were observed.From it found that even though there...

An experiment was carried out to evaluate the efficacy of different bio-agents and chemicals against seed soil borne diseases safflower. Significantly low per cent disease incidence recorded in treatments with bio-agents, Trichoderma harzianum Th4d SC @ 2ml/kg (36.8% for Alternaria leaf spot, 26.4% wilt 18.3% blight) Pseudomonas fluorescens Pf2 WP @5g/kg (38.2% 28.2% blight), which are on par chemical treatments. Further, T. P. resulted higher yields (924 kg/ha 915 kg/ha, respectively)...

A field experiment was conducted to determine the efficacy of different insecticides against sucking pests viz., thrips, Caliothrips indicus Bangall and whitefly Bemisia tabaci Gennadius, infesting blackgram in North coastal Andhrapradesh at Agricultural College, Naira during rabi 2017-2018.The experimental results revealed that all treatments showed significant differences reducing population over untreated check. Among tested insecticides, thiacloprid 21.7 SC @ 0.0325% found be highly...

Correlation of characters contributing to alcohol yield in sorghum was studied using hybrids obtained from a partial diallel cross six sweet and one grain types. The interrelationship among the at genotypic level indicated that had significant positive correlation with total sugar, sucrose per cent, brix, juice yield, cane girth stem. Low reducing sugar content is also essential for high extraction. Selection sugars, brix will lead production.

Aims: To evaluate the efficacy of novel insecticides against spotted pod borer on rice fallow blackgram.
 Study Design: Randomised Block Design (RBD) was used in this study.
 Place and Duration Work: The present study carried out at College farm Agricultural College, Naira during Rabi 2017-2018 season.
 Methodology: borer, Maruca vitrata (Geyer) is a serious pest blackgram through growth period especially flowering development stages North Coastal Andhra Pradesh. Management...

Sugarcane is one of the important cash crops in India and plays pivotal role both agricultural industrial economy our country.India ranks first world with an area 4.73 million hectares having 2.46% share total a production 376.9 tonnes (2017-18).Andhra Pradesh seventh sugar crop country 4.83% (0.22 mha).The average Andhra 796.5 q ha -1 around 92.4% under irrigation.(Agricultural statistics at glance, 2014 Pocket Book Agricultural Statistics, 2018).More than 100 diseases have been recorded...

Sclerotium rolfsii is a necrotrophic fungus that causes devastating stem rot disease on peanuts under high temperature and humidity conditions. Developing more resistant varieties better management strategy from an economic environmental point of view. In this study, 105 peanut accessions the USDA mini-core collection were screened for resistance against growth chamber greenhouse conditions at New Mexico State University Agricultural Science Center in Clovis, NM, USA. The inoculated with...

Biological studies conducted during 2017-18 at the Post Graduation Research laboratory, Department of Entomology, Agricultural College, Naira on Diamondback moth, Plutellae xylostella (L.) (Lepidoptera: Plutellidae) revealed that egg period (incubation period) varies from 2 to 4 days (Av. 3 ± 0.5 days). The larva passed through four different instars. first, second, third and fourth instar lived for 2.5 days), 1.5 1 1.75 0.25 days) 2.75 respectively with a total larval 7 12 9 pre-pupal pupal...