Sandeep Kumar

• PhD
• Assistant Professor at Orissa University of Agriculture & Technology

Groundnut (Arachis hypogea) is an important source of edible oil and protein. Diseases caused by more than 55 pathogens are one of the major constraints in attaining high production of groundnut as they reduce the yield to the tune of 70%. Among them, leaf blight of groundnut caused by Alternaria alternata is a major disease causing 22% of pod redu...

A new pathogen was reported India causing leaf and panicle blight of rice.

Mungbean (Vigna radiata L.) is a short duration pulse crop cultivated under varying environmental conditions throughout the southeast Asia and particularly in India. Yellow mosaic disease caused by yellow mosaic virus transmitted by whitefly (Bemisia tabaci) is an important limiting factor for the production and productivity of green gram. In the p...

Long pepper (Piper longum L.) is an important medicinal plant used in Ayurvedic system of medicine since ancient time and diseases are an important biological constraint in limiting the production and productivity of it hence a field experiment was conducted to evaluate the foliar and soil borne diseases of Long pepper (cv. Vishwam) using several c...

Groundnut stem rot is caused by Sclerotium rolfsii, a soil-dwelling, polyphagous, facultative parasite. Symptoms of stem rot caused by S. rolfsii on groundnut plants included the formation of a deep brown lesion on the plant's stem near the ground level, followed by yellowing of groundnut leaves, then loss of vigor and premature death. Current rese...

Plant viruses pose a serious threat to agricultural production systems worldwide. The world's population is expected to reach the 10-billion mark by 2057. Under the scenario of declining cultivable land and challenges posed by rapidly emerging and re-emerging plant pathogens, conventional strategies could not accomplish the target of keeping pace w...

In kharif season of 2015-16, 100 and 70 numbers of genotypes of mungbean and urdbean, respectively were received under National Genetic Stock Nursery (NGSN) experiment of All India Coordinated Research Project [AICRP] on MULLaRP mungbean, Urdbean, Lentil, Lathyrus and Pea] at Centre for Pulses Research (CPR), Berhampur under Orissa University of Ag...

An experiment was conducted under natural epiphytotic conditions with an aim to evaluate eighteen genotypes against three major diseases of finger millet i.e. blast, foot rot and brown spot diseases at Centre For Pulses Research (CPR), Berhampur, Odisha during Kharif 2016. In case of blast disease, genotypes were screened for leaf blast at seedling...

This article is about finding the sources of resistance in finger millet germplasm against blast, foot rot and brown spot diseases under natural epiphytotic condition in south east coastal plain zone of Odisha

Cucumber mosaic virus (CMV) is a widespread plant virus infecting important vegetables, plantation and flower crops. Currently, CMV is detected by enzyme-linked immunosorbent assays (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR) assays. ELISA requires polyclonal antibodies and is time-consuming. PCR requires skilled manpower a...

Fifty seven mungbean and forty urdbean genotypes were screened under natural field condition against web blight disease at Centre for Pulses Research (CPR), Berhampur under Orissa University of Agriculture and Technology (OUAT), Bhubaneswar, Odisha. In case of Mungbean, none of the genotypes were found free, highly resistant or resistant. However s...

A field screening was undertaken to evaluate various mungbean genotypes against important diseases namely Yellow mosaic disease (YMD), Cercospora leaf spot (CLS) disease and Powdery mildew (PM) disease under Rice fallow condition in the year 2016-17 at Centre for Pulses Research (CPR), Berhampur under Orissa University of Agriculture and Technology...

Grapevine leafroll disease (GLD), caused by a complex of serologically and genetically distinct or related viral species termed as Grapevine leafroll associated viruses (GLRaVs), is a serious threat to the grape production worldwide. Recently, Grapevine leafroll-associated virus 4 (GLRaV-4) has been reported in the Indian vineyards, mostly as a mix...

Field and horticultural crops are infected by large number of viruses and virus-like pathogens in India, which can be managed only by preventive measures and for that sensitive diagnosis is a prerequisite. Bioassay was initially utilized in detection of plant viruses. Following this, serological assay enzyme-linked immunosorbent assay (ELISA) was w...

Ampeloviruses (family Closteroviridae) are filamentous monopartite, single-stranded, positive-sense RNA genome. They are transmitted by mealybugs in semi-persistent manner and vegetative propagating material remains the major route of spread. Ampeloviruses are recent addition to the plant viruses in India. Grapevine leafroll-associated virus 3 (GLR...

In a 2013-15 survey, typical symptoms of grapevine leafroll disease were observed in vineyards of Western and North-Eastern India. Twelve grapevine cultivars were infected with Grapevine leafroll-associated virus 4 (GLRaV-4), as shown by ELISA. The coat protein (CP), heat shock protein 70 homologue (HSP70h) and p23 genes of GLRaV-4 isolates from In...

Grapevine leafroll-associated virus 3(GLRaV-3) is the most destructive virus causing leaf roll disease in grapevine. ELISA has been widely used to screen the propagating materials for indexing of this virus at nursery stage. But the uneven distribution of GLRaV-3 in vines, its confinement to phloem tissues and impact of seasonal influences on its c...

Viticulture, one of the most remunerative farming enterprises of India, is seriously affected by leafroll disease, which accounts for 62% of the losses in grape production worldwide due to viral diseases (4). Grapevine leafroll-associated virus 3 and 1 (GLRaV-3 and GLRaV-1) of the family Closteroviridae are the two most common viruses associated wi...

Survey conducted during 2010-2011 in the vineyards of Nashik and Pune regions of India revealed the association of an Ampelovirus antigenically related to Grapevine leafroll-associated virus 3 (GLRaV-3) with seven cultivars of grapevine. Upon sequencing of the coat protein (CP) and partial heat shock protein 70 homologue (HSP70h) genes of GLRaV-3 p...

Reduced seed production in onion is associated with Onion yellow dwarf virus (OYDV), a filamentous Potyvirus. Onion is also infected with other filamentous virus particles suspected to be Allexivirus. RT-PCR was used to detect mixed infection of both the viruses in leaves and bulbs. A duplex RT-PCR was developed, which simultaneously detected the p...