Prabakar Kuppusamy

• Ph.D
• Head of Faculty at PGP Group of Institutions

Comparative analysis of unmanned aerial vehicle and conventional spray systems for the maize fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera; Noctuidae) management. Plant Protect Sci. Abstract: Insecticidal interventions at critical stages of maize are an important strategy for managing invasive insect pest fall armyworm (FAW) Spodopt...

Mango production in Tamil Nadu is known to be adversely affected by C. gloeosporioides in both field and post harvest stage of crop and drastically reduces market and edible value of fruit. To manage the disease it is essential to learn about the nature of pathogen and its way of interaction with host and its survival ability in environment. Hence...

In India, maize production has increased from 17.8 million tonnes in 1950 to 29 million tonnes in 2018-19 with a corresponding increase in area. A new threat to maize cultivation came in the form of invasive fall armyworm, (FAW), Spodoptera frugiperda (JE Smith) in 2018 (Deshmukh and Kalleshwaraswamy, 2018). An Integrated Pest Management Capsule ha...

Neem (Azadirachta indica) is a native to the Indian subcontinent. Its seeds are the source neem cake.The neem cake is recommended to apply in the last plough to contain the invasive maize fall armyworm (FAW) pest Spodoptera frugiperda (J.E. Smith). The experiment was laid out in the Insectary, Department of Agricultural Entomology, TNAU, Coimbatore...

Healthy seeds play an important role in growing a healthy crop. Seed health testing is performed by detecting the presence or absence of insect infestation and seed-borne diseases caused by fungi, bacteria, and viruses. The most detrimental effect of seed-borne pathogens is the contamination of previously disease-free areas and the spread of new di...

Chilli is an universal spice cum solanaceous vegetable crop rich in vitamin A, vitamin C, capsaicin and capsanthin. Its cultivation is highly threatened by fruit rot disease which cause yield loss as high as 80–100% under congenial environment conditions. Currently actinobacteria are considered as eco-friendly alternatives to synthetic fungicides a...

Background: Fruit rot is an age old destructive disease of chilli caused by complex fungal pathogens resulting in severe yield losses both at pre and post-harvest stages. Hence, this study aims to investigate the occurrence of fruit rot disease in Tamil Nadu and to identify the fungal pathogens associated with fruit rot symptoms based on morpho-mol...

Background: Urdbean leaf crinkle is one of the serious diseases of urdbean (Vigna mungo (L.) Hepper) which is caused by an ungrouped virus called Urdbean leaf crinkle virus (ULCV). The disease is highly seed transmissible under natural conditions and in experimental conditions it is mechanically transmitted through sap inoculation. Methods: The aim...

Maize fall armyworm, Spodoptera frugiperda (J.E. Martin (Noctuidae: Lepidoptera), first recorded in the Americas spread to Africa during 2016 and later spread to more than 40 countries including India during July, 2018. Infestation by maize fall armyworm results in extensive defoliation besides damage to tassels and cobs at later stages of the crop...

Urdbean leaf crinkle disease (ULCD) caused by an ungrouped virus is a destructive and serious disease of urdbean (Vigna mungo L. Hepper). Urdbean is commonly infected by leaf crinkle disease and is distinguished by the symptoms of extreme crinkling, curling, puckering, the rugosity of leaves, stunting of plants, and malformation of floral organs. A...

Plant growth-promoting rhizobacteria (PGPR) are a group of root-associated beneficial bacteria emerging as one of the powerful agents in sustainable plant disease management. Among the PGPR, Bacillus sp. has become a popular biocontrol agent for controlling pests and the diseases of several crops of agricultural and horticultural importance. Unders...

The fall armyworm, Spodoptera frugiperda (J. E. Smith, 1797) emerged as a major threat to several maize growing countries worldwide. To manage this pest outbreak, farmers rely heavily on insecticides. Seed treatment with insecticides in maize is often the most pragmatic fall armyworm (FAW) management tactic. The aim of this work was to determine th...

The rice brown planthopper Nilaparvata lugens (Stål.) is a threat to rice growers and it has developed resistance to many insecticides. Hence, newer molecules like triflumezopyrim 10%SC are available. Its toxicity has been investigated in this study, with four populations from Tamil Nadu along with imidacloprid 17.8%SL using rice seedling dip metho...

Baseline toxicity of neonicotinoid insecticides viz., thiamethoxam 25WG and sulfoxaflor 21.8SC was assessed in the field collected populations of the rice white backed planthopper Sogatella furcifera (Horvath). The major rice growing regions of Tamil Nadu when studied revealed that the field populations vary in their susceptibility. Coimbatore and...

Baseline toxicity of neonicotinoid insecticides viz., thiamethoxam 25WG and sulfoxaflor 21.8SC was assessed in the field collected populations of the rice white backed planthopper Sogatella furcifera (Horvath). The major rice growing regions of Tamil Nadu when studied revealed that the field populations vary in their susceptibility. Coimbatore and...

The rice brown planthopper Nilaparvata lugens (Stål.) is a threat to rice growers and it has developed resistance to many insecticides. Hence, newer molecules like triflumezopyrim 10%SC are available. Its toxicity has been investigated in this study, with four populations from Tamil Nadu along with imidacloprid 17.8%SL using rice seedling dip metho...

Maize fall armyworm, Spodoptera frugiperda (J.E. Martin (Noctuidae: Lepidoptera), first recorded in the Americas spread to Africa during 2016 and later spread to more than 40 countries including India during July, 2018. Infestation by maize fall armyworm results in extensive defoliation besides damage to tassels and cobs at later stages of the crop...

Invasive fall armyworm Spodoptera frugiperda (JE Smith) (Noctuidae: Lepidoptera) has the potential to cause 70 – 80 per cent yield loss in maize. Field experiments to assess the avoidable yield loss due to invasive fall armyworm S. frugiperda (Noctuidae: Lepidoptera) was conducted across four major maize growing zones in Tamil Nadu, India. The trea...

Vegetable Based Border Cropping Systems to Enhance Natural Suppression of Fall Armyworm, Spodoptera frugiperda (J.E. Smith) in Maize

Background: Urdbean leaf crinkle disease (ULCD) is one of the most devastating biotic stress factors which is responsible for drastic yield loss in urdbean [Vigna mungo (L.) Hepper]. The etiology of ULCD is still unknown and there are conflicting reports on its transmission through seed, insect vectors, grafting and infected sap. Methods: Per cent...

The postharvest pathogens Colletotrichum gloeosporioides and Lasidiplodia theobromae inciting quiescent infection caused huge economical loss during storage. Twenty-five pathotypes of C. gloeosporioides and sixteen of L. theobromae were isolated from different regions of Tamil Nadu, India. The SDS-PAGE assay showed the variation in protein profile...

Phytoplasma is an obligate prokaryote infecting a wide array of crops suchas urdbean, sesame, brinjal and many other vegetable crops in India.Several workers have noticed the recent outbreak of phytoplasma diseasein several pulse crops. A study was conducted to identify the phytoplasmainfection in chickpea from Tamil Nadu. The average disease incid...

The term “endophyte” was first introduced by De Bay in 1886 to explore the symbiotic microbiota to contain the plant diseases like probiotic microbiota in human being. The modern intensive farming system enhanced the use of chemical synthetic pesticides to increase the crop production in agri-horti ecosystems for many decades. Due to the hazardous...

Now a days, vegetables prices are hiked daily due to reduction in area of cultivation, poor storage and low distribution. Carrot (D. carota L. var. sativus) is one of the most important edible root vegetables around the world and cultivated in temperate zones. Currently, its production and distribution were retarded due to postharvest decay. This i...

Parthasarathy, S., Thiribhuvanamala, G., & Prabakar, K. (2020). Diseases of Field Crops and their Management (1st ed.). CRC Press. https://doi.org/10.1201/9781003084198

Anthracnose disease caused by C. gloeosporioides is an important pre and post-harvest disease of mango in all mango producing areas of the world. Survey of mango anthracnose in ten different places of Tamil Nadu showed that the level of disease incidence was higher in Neelum variety and the mean per cent disease index was more in Madurai mark...

This research aimed to identify the emerging rust disease in fig cultivation. In this context, commercial orchards in the Western Ghats of Tamil Nadu, India, trees infected with rust exhibited reddish-brown angular leaf spots on their upper surfaces while their lower leaf surfaces contained numerous orange to reddish, rust pustules. An intensive su...

Our study endeavors to evaluate the efficacy of endophytic Bacillus against Fusarium wilt disease and understand the resistance mechanism in tomato plants. A total of 21 endophytic bacterial strains were characterized at both biochemical and molecular levels and were screened against F. oxysporum f. sp. lycopersici by dual culture. Strain FZB24 rec...

Volatile metabolites emitted from mango fruits artificially inoculated with two toxigenic fungi isolated from infected mangoes were profiled using gas chromatography/mass spectrometry. A noteworthy differential expression of volatile metabolites was observed. The chromatographic profiling study afforded a total of 88 different volatile compounds. H...

Sixteen isolates of Lasiodiplodia theobromae were collected from mango varieties grown in various regions of Tamil Nadu, India. The results revealed that most of the L. theobromae isolates exhibited significant differences in morphology, colour and spore size. However, all 16 isolates took 3–4 days invariably to cover the 90 mm Petri plates. Among...

Postharvest diseases cause severe economic losses to horticultural fresh produce during the transportation and storage. The incidence of postharvest diseases can affect the quality and restrict the shelf life of the horticultural fresh produce. Synthetic fungicides, when applied are the primary factor to control postharvest diseases. At present leg...

An oomycete fungus Phytophthora infestans (Mont.) de Bary, is an incitant of destructive late blight disease on potato, causes severe yield loss worldwide. A study was undertaken for the management of the diseases by using the antagonistic bacterium. Twenty-five isolates of antagonistic bacteria were collected from various parts of Tamil Nadu from...

Induction of defense-related enzymes, such as phenylalanine ammonia lyase (PAL), peroxidase (PO), polyphenol oxidase (PPO), superoxide dismutase (SOD) and catalase (CAT) due to bacterial antagonists viz., Pseudomonas fluorescens (Pf1) and Bacillus subtilis (EPCO16) and plant-derived lipoxygenase volatile compound hexanal, were studied in mango frui...

Colletotrichum gloeosporioides and Lasiodiplodia theobromae, causing anthracnose and stem-end rot are the major post-harvest pathogens of mango worldwide, causing 25-40% post harvest loss globally. The present study was conducted to evaluate the effect of a natural volatile, hexanal, on the mycelial growth and spore germination of C. gloeosporioide...

In this study, the toxicity of liquid culture media from different isolates of Lasiodiplodia theobromae was characterized and some properties of the toxic metabolites were distinguished. In this work toxin producing ability of L. theobromae was revealed by studying the physical parameters viz., osmotic potential, toxin concentration, pH, temperatur...

Synthetic fungicides are widely used in conventional agriculture to control plant diseases. Post harvest pathogens which causes serious losses annually in Indian fruits and vegetables. The disease is currently managed with synthetic fungicides under post harvest condition by fungicidal dipping. Applied chemical pesticides are one of the effective a...

The transition to a new era of disease resistance research is underway, and both the public and private sectors are moving to exploit the new tools and opportunities presented by genetics and molecular biology. Most disease resistance traits are polygenic in nature and controlled by many genes residing at so called quantitative trait loci (QTLs). I...

https://cab.presswarehouse.com/sites/stylus/resrcs/chapters/1780643233_1stChap.pdf

Mango (Mangifera indica L.) is one of the most important tropical fruit crop. Most studies on exploitation of mango have been dealing with mango leaves, juice and bark, however little attention given to mango peel and latex. Biologically active compounds from vegetal origins are a possible source of natural antifungic effect. Especially, unripe man...