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Gailce Leo Justin, C.

• Development of Integrated Biocontrol Strategy for the Management of Stem Rot Disease (Fusarium oxysporum F.sp. Vanillae) of Vanilla

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Authors

M. Jayasekhar ¹, K. Manonmani ¹, C. Gailce Leo Justin ¹

Affiliations
1 Horticultural Research Station, Krishi Vigyan Kendra, Pechiparai-629 161, IN

Source

Agricultural Science Digest, Vol 28, No 2 (2008), Pagination: 109-111

Abstract

Stem rot disease of vanilla caused by Fusarium oxysporum f.sp. vanillae is a major constraint in its cultivation in Kanyakumari District. The in vitro studies on the mycelial growth of the pathogen expressed the superior efficacy of the native isolate of Pseudomonas fluorescens (Pf_NI) that recorded an inhibition zone of 25.00mm and was followed by T. harzianum. Under field conditions soil application of Pf(_NI) followed by carbendazim spray (0.2%) after 30 days of Pseudomonas application recorded the lowest disease incidence of 3.77, 4.03 and 3.67 per cent in three years and exerted 79.95, 80.50, 80.48 per cent reduction in disease over the control plot respectively. Among the bioagents, the soil application of Pf(_NI) followed T. harzianum after 30 days and another dose of Pf(_NI) after 30 days recorded a significant disease reduction of 69.84, 68.24 and 70.21 per cent in three consecutive years.

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• Dose Optimisation of Insecticides for the Management of the Pseudostem Weevil Odoiporus longicollis (oliv.) (curculionidae:Coleoptera) on Banana

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Authors

C. Gailce Leo Justin ¹, D. Rajakumar ¹, J. D. Nirmalatha ¹, J. Prem Joshua ¹, M. Jayasekhar ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai-629 161, IN

Source

Agricultural Science Digest, Vol 26, No 2 (2006), Pagination: 117-119

Abstract

Field trials were conducted for optimising the dose of insecticides for the management of the pseudostem weevil, Odoiporus longicollis (Oliv.) on banana. Studies revealed that pseudostem injection of monocrotophos or dimethoate along with water @ 1:5 ratio was significantly superior in controlling the pest. The insecticide water mixture was administered @ 2 ml/injection point at 60 cm of the stem and another 2 ml at 150 cm of the pseudostem from ground level in the opposite direction. These treatments recorded an average bunch yield of 10.86 kg/plant and 10.58 kg/plant with an average bunch recovery of 84.20 and 81.32 per cent respectively. The problems encountered in the pseudostem injection of monocrotophos along with water in the ratio of 1.5 : 3.5 are discussed.

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• Identification of Active Principle in the Herbal Extracts Possessing Bactericidal Action against Citrus Canker, Xanthomonas axonopodis pv. Citri

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Authors

K. Manonmani ¹, M. Jayasekhar ¹, C. Gailce Leo Justin ¹, T. Thangaselvabai ¹

Affiliations
1 Krishi Vigyan Kendra, Horticultural Research Station (TNAU), Pechiparai-629161, IN

Source

Indian Journal of Agricultural Research, Vol 43, No 2 (2009), Pagination: 129-133

Abstract

Bactericidal action ofsome selected herbal extracts viz., Acalypha indica, Achyranthes aspera, Aloe vera, Azadirachta indica, Datura metal, Hibiscus rosasinensis, Nerium oleander, Ocimum sanctum, O. basilicum, Phyllanthus emblica, Polyalthia longifolia, Piper betle, Punica granatum, Solanum torvum and Solanum trilobatum were tested in vitro against the growth of citrus canker disease causing pathogen, Xanthomonas axonopodis pv. citri (Xac). The leaf extract of P. longifolia followed by A. aspera recorded the maximum growth inhibition of 9.77mm and 8.47mm diameter respectively. The 20-40% ammonium sulphate fraction of A. aspera and 40-60% fraction of P. longifolia exhibited inhibitory action on in vitro growth of the pathogen. The molecular weight of the fractions of leaf extracts was found to be 30 kDa and 19 kDa for P. longifolia and A. aspera respectively.

Keywords

Herbal Extracts, Citrus Canker, Xanthomonas axonopodis pv. Citri.

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• Influence of Nutrients on the Quantitative and Qualitative Traits of Banana

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Authors

T. Thangaselvabai ¹, C. Gailce Leo Justin ², S. B. Nirmal Johnson ¹, M. Jayasekhar ¹

Affiliations
1 Horticultural College and Research Institute, Coimbatore- 641 003, IN
2 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai- 629 161, IN

Source

Indian Journal of Agricultural Research, Vol 43, No 4 (2009), Pagination: 274-278

Abstract

A field study was conducted to evaluate the crop maturity, productivity, quality and economic returns from banana cv. Rasthali in response to the split application of higher levels of nitrogen and Azospirillum. Application of Azospirillum along with 100g inorganic N (T7) produced higher yield (19.00kg/plant) of better quality fruits with the cost benefit ratio of 2.41 and recorded a minimum of 272 days to shoot. Similarly application of higher level of inorganic N ie., 200 g/plant in four split doses (T6) also increased the yield and quality of banana.

Keywords

Banana, Nutrients, Quantitative Traits, Qualitative Traits.

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• Effect of Biofertilizers on the Growth and Yield of Cinnamon(Cinnamomum zeylanicum Blume)

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Authors

R. Swarna Priya ¹, J. Prem Joshua ¹, C. Gailce Leo Justin ¹, M. Jayasekhar ¹

Affiliations
1 Horticultural Research Station,Tamil Nadu Agricultural University, Pechiparai-629161, IN

Source

Indian Journal of Agricultural Research, Vol 41, No 4 (2007), Pagination: 310-312

Abstract

Experiments were undertaken to optimize the nutrient requirement for maximizing the bark yield in cinnamon. It was observed that the incorporation of vesicular arbuscular mucorrhiza (VAM) at 3 kg/tree had a synergistic effect and increased the plant height, girth and the number of branches. Bark yield was maximum in the treatment T₉ (250g N, 130g P and 250g K/tree/year and VAM 3kg/tree) during the first (1.615 kg/tree) and second harvests (2.050 kg/tree). The influence of VAM on the induction of higher bark yield in cinnamon is evident.

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• Effect of Food Attractants on Coconut Red Palm Weevil, Rhynchophous ferrugineus Oliver

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Authors

C. Gailce Leo Justin ¹, R. P. Soundararajan ²

Affiliations
1 Horticultural Research Station, Pechiparai - 629 161, Kanyakumari, IN
2 Section of Entomology, Sugarcane Breeding Institute, Coimbatore - 641 007, IN

Source

Indian Journal of Agricultural Research, Vol 40, No 2 (2006), Pagination: 154-156

Abstract

The efficacy of different food attractant combinations were studied against coconut redpalm weevil, Rhynchophrus ferrugineus Oliver. More population of weevils get attracted towards logs treated with tender coconut water + caster cake than tender coconut water alone upto 8^th week and a high response noticed till 4^th week. In both the field trials food attractants added with castor cake shown better attraction of weevils. When castor cake added with tender coconut water and coconut toddy captured more adult insects.

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• Black Pepper (Piper nigrum L.) 'The King of Spices' - A Review

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Authors

T. Thangaselvabal ¹, C. Gailce Leo Justin ¹, M. Leelamathi ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai, 629 161, Tamil Nadu, IN

Source

Agricultural Reviews, Vol 29, No 2 (2008), Pagination: 89-98

Abstract

Black pepper (Piper nigrum L.) the king of spices is originated in the Western Ghats of India and subsequently spread to other countries. It is the largest foreign exchange earner among spices and the average quantity exported from India accounts for more than 70 per cent of the total production. The demand for black pepper and its products is getting increased year by year in the world market but the production is not up to the level. At present the productivity in India is very low due to non adoption of good agricultural practices.

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• Bioecology and Management of the Red Palm Weevil, Rhynchophorus ferrugineus Oliv. (Coleoptera: Curculionidae) on Coconut-A Review

Abstract Views :114  |  PDF Views:1

Authors

C. Gailce Leo Justin ¹, M. Leelamathi ¹, T. Thangaselvabai ¹, S. B. Nirmal Johnson ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai, 629 161, IN

Source

Agricultural Reviews, Vol 29, No 2 (2008), Pagination: 117-124

Abstract

The red palm weevil (RPW), Rhynchophorus ferrugineus Oliv. is a dreadful pest that attacks coconut palm in India and many other countries in South and South East Asia. The infestation by the weevil is more predominant in younger plantations between the age group of 5 and 20 years. The female weevil commences oviposition 1 to 7 days after pairing and continues to oviposit upto 25 to 63 days laying about 275 eggs. Presence of cocoons and weevils on chewed up fibers in leaf axils or at the bottom of the palm on the ground provides indication for the presence of the pest. Effective control of the pest can be achieved through an integrated pest management approach. Care should be taken to see that infected palms especially those between the age group of 5 and 30 years that are cut for different purposes should be properly disposed off because these fallen and cut stems facilitate the profuse breeding of the weevil. Trapping and killing adult weevils help to reduce weevil population in an area. Root feeding of monocrotophos 10ml+10ml water affords good protection.

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• Crop Growth and Yield Prediction Using Canopy Reflectance - A Review

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Authors

M. Leelamathi ¹, K. P. Rajendran ¹, C. Gailce Leo Justin ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Peehiprai-629 161, IN

Source

Agricultural Reviews, Vol 29, No 4 (2008), Pagination: 290-297

Abstract

The reflecting power of crop canopy gets changed with plant species. The reflection from leaves increases with increasing soil salinity, leaf moisture deficit and chlorophyll content. Environmental factors such as soil salinity, moisture availability and nutrient toxicity or its deficiency affects the optical and radiation properties of plants. The reflection in the red spectral region from plant leaves is dependent on the chlorophyll content and in the near infra red spectral region it is dependent on Leaf Area Index and green biomass only. The reflectance increases with senescing of leaves and reduction in chlorophyll content. Pre-harvest estimation of crop yields are important in planning procurement, distribution, import and export of agricultural commodities. The canopy albedo measurements are adequate to delineate the critical periods of crop growth making the technique potentially adoptable to predict crop yield.

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• Bionomics and Management of the Pseudostem Weevil Odoiporus longicollis Oliver (Coleoptera: Curculionidae) in Banana-A Review

Abstract Views :153  |  PDF Views:1

Authors

C. Gailce Leo Justin ¹, M. Leelamathi ¹, S. B. Nirmaljohson ¹

Affiliations
1 Agricultural Research Station, Tamil Nadu Agricultural University, Thirupathisaram 629 901, IN

Source

Agricultural Reviews, Vol 29, No 3 (2008), Pagination: 185-192

Abstract

The banana pseudostem weevil (BPW) Odoiporus longicollis Oliver (Coleoptera: Curculiondae) is a serious pest limiting the production and productivity of bananas and plantains in several parts of India and other countries. It is a monophagous pest and both larvae and adult cause severe damage to banana and plantains and the important symptoms of infestation are exudation of sap from the leaf sheaths, yellowing and withering of leaves, and decaying of peduncles resulting in the immature ripening of fruits. Field sanitation, use of healthy suckers, periodical pruning of suckers and removal and destruction of infested pseudostems reduce the incidence of the pest. The disc-on stump and longitudinal split pseudostem traps can be efficiently used to monitor and reduce the BPW population. Pseudostem injection of monocrotophos or dimethoate: water (1:5 ratio) can be recommended for the effective management of this pest.

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• Induced Systemic Resistance (ISR) in Plant Disease Management-A Review

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Authors

K. Manonmani ¹, M. Jayasekhar ¹, C. Gailce Leo Justin ², T. Thangaselvabai ¹

Affiliations
1 Krishi Vigyan Kendra, Pechiparai-629 161, IN
2 Horticultural Research Station, Pechiparai, 629 161, IN

Source

Agricultural Reviews, Vol 28, No 1 (2007), Pagination: 42-48

Abstract

Disease management options currently available to farmers do not provide adequate control of plant diseases and there is a need for new disease management strategies. Induced systemic resistance (ISR) of plants against pathogens is a widespread phenomenon that has been intensively reviewed with respect to the underlying signalling pathways as well as to its potential use in plant protection. Systemic acquired resistance (SAR) is also vital plant defense system that confers broad spectrum resistance accompanied by coordinated expression of SAR genes. The present review focuses on international and indigenous research efforts in resistance induction in plants to the pathogen attack. It provides a perceptible review on the agents inducing systemic disease resistance and the mechanism underlying the induction of resistance. Recent trends in plant disease management in India cover the use of chemicals, plant extracts, cultural methods and the use of biological agents. Each and every agent possesses inherent ability to induce resistance mechanism of the host systemically. Such hidden efficacy can be potentially utilized for plant disease management.

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• Bioecology and Management of the Diamondback Moth, Plutella xylostella (L.) (Lepidoptera : Yponomeutidae) - A Review

Abstract Views :113  |  PDF Views:1

Authors

C. Gailce Leo Justin ¹, K. R. Sudha ¹, T. Thangaselvabai ¹, M. Jayasekhar ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai - 629 161, IN

Source

Agricultural Reviews, Vol 28, No 3 (2007), Pagination: 169-178

Abstract

The diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Yponomeutidae), a serious pest of crucifers has become a single limiting factor in the production of quality heads. Due to high reproductive capacity and ability to withstand pesticides, DBM has developed resistance to all groups of insecticides. As a consequence of resistance and various undesirable side effects of intensive insecticide application, increasing attention has been paid to alternate strategies such as IPM, a programmed approach including both cultural and biological control and the use of more selective insecticides.

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• Dosage and Time-Mortaliy Response of Bacillus Thuringiensis Berliner Treated Larvae of Diamondback Moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) to Insecticides

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Authors

C. Gailce Leo Justin ¹, D. Rajakumar ¹, J. E. Adeline Vinila ¹, J. D. Nirmalatha ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai, 629 161 Kanyakumari District, IN

Source

Agricultural Science Digest, Vol 25, No 4 (2005), Pagination: 266-268

Abstract

Investigations on the dosage and time-mortality response of Bacillus thuringiensis Berliner (Bt) treated larvae of Diamondback moth (DBM), Plutella xylostella (L.) revealed that Bt-treated DBM larvae were more susceptible than untreated counterparts to endosulfan, qulnalphos, fenvalerate and Nimbecidine. Bt-treatment increased the susceptibility of these larvae (1.90 to 2.80 times) to different insecticides. The LT₅₀ values were reduced due to Bt-treatment. The increase in susceptibility was more or less equal against endosulfan, quinalphos and fenvalerate, but high in Nimbecidine with a susceptibility ratio of 4.65 times. The possibilities for the increased susceptibility of Bt-treated DBM larvae to the different insecticides are discussed.

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• Comparative Efficacy of Bacillus thuringiensis Berliner formulations with Insecticides against Plutella xylostella (L.) and their Effect on Cotesia plutellae Kurdj. on Cauliflower

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Authors

C. Gailce Leo Justin ¹, J. Prem Joshua ¹, M. Jayasekhar ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai-629 161, IN

Source

Agricultural Science Digest, Vol 23, No 4 (2003), Pagination: 251-254

Abstract

Field evaluation of Bacillus thuringiensis Berliner formulations against the diamondback moth, Plutella xylostella (L.) revealed that all the Bt. formulations except Spicturin were significantly superior in reducing the larval population. Dipel and Centari though less effective than Delfin were significantly better than all other insecticides. The highest yield was observed in Delfin-treated plots which was higher than the other treatments. All the insecticidal treatments exhibited a significant reduction in the number of Cotesia plutellae cocoons over control except the biopesticide Delfin in most of the observations over control. However, the pest: parasitoid ratio was maximum in Delfin-treatment followed by Dipel and Centari. Fenvalerate recorded the lowest ratio which was almost equal to the control and this was followed by auinalphos. Neem formulations recorded a relatively higher ratio than the chemical insecticides.

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• Dosage-Mortality Response of Different Diamondback Moth Population to Bacillus thuringiensis Berliner and Insecticides

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Authors

C. Gailce Leo Justin ¹, R. J. Rabindra ¹, M. Swamiappan ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai - 629 161, IN

Source

Agricultural Science Digest, Vol 21, No 4 (2001), Pagination: 256-258

Abstract

The relative susceptibility of Diamondback moth, Plutella xylostella L. to Bacillus thuringiensis Berliner was studied in larval population of three locations viz., Oddanchatram, Nilgiris and Coimbatore of Tamil Nadu. The studies showed that population from Oddanchatram required a higher level of LC₅₀ for endosulfan, quinalphos and fenvalerate than that of Nilgiris and Coimbatore population, but these population were equally susceptible to B. thuringiensis. The differential susceptibility may be attributed to the differences in the pesticide use patten, intensity and temperature conditions.

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• Influence of Spraying Systems on the Efficacy of Bacillus thurigiensis Berliner against the Diamondback Moth Plutella xylostella (L.) on Cauliflower

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Authors

C. Gailce Leo Justin ¹, M. S. Nirmala ¹

Affiliations
1 Horticultural Research Station, Tamil Nadu Agricultural University, Pechiparai-629 161, IN

Source

Agricultural Science Digest, Vol 20, No 3 (2000), Pagination: 209-210

Abstract

A field trial was carried out to study the influence of both high volume and low volume spraying systems on the efficacy of Bacillus thuringiensis against the diamondback moth on cauliflower (var. Krishna-Double cross). Application of Bacillus thuringiensis (Delfin) @ 750 g/ha with a hand-operated Aspee back-pack hydraulic sprayer was significantly more effective than the mist blower application in reducing the larval population and increasing the yield. Similar results were obtained with regard to quinalphos @ 450g a.i./ha treatment.

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• Bacillus thuringiensis Berliner and Some Insecticides against the Diamond-Back Moth, Plutella xylostella (L.) on Cauliflower

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Authors

C. Gailce Leo Justin ¹, R. J. Rabindra ¹, S. Jayaraj ¹

Affiliations
1 Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN

Source

Journal of Biological Control, Vol 4, No 1 (1990), Pagination: 40-43

Abstract

In field trials on the control of the diamond-back moth, Plutella xylostella on cauliflower, Bacillus thuringiensis (Bactospeine^R) gave better control of the pest than all the chemical insecticides tested. Its combination with endosulfan, fenvalerate or diflubenzuron did not improve the efficacy of the pathogen. Yield was significantly higher in B.t. - treated plots in both the trials.

Keywords

Bacillus thuringiensis, Diflubenzuron, Neem Seed Kernel Extract, Insecticides, Plutella xylostella, Field Efficacy.

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• Laboratory Evaluation of Comparative Toxicity of Bacillus thuringiensis Subspecies to Larvae of Plutella xylostella and Bombyx mori

Abstract Views :68  |  PDF Views:12

Authors

C. Gailce Leo Justin ¹, R. J. Rabindra ¹, S. Jayaraj ¹, M. Rangarajan ²

Affiliations
1 Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
2 Tamil Nadu Agricultural University, Coimbatore 641 003, IN

Source

Journal of Biological Control, Vol 2, No 2 (1988), Pagination: 109-111

Abstract

Laboratory bioassay tests on the comparative efficacy of eight Bacillus thuringiensis (B.t.) subspecies against third instar larvae of Plutella xylostella L. as well as its safety to second lnstar larvae of Bombyx mori L. revealed that B.t. subsp. kurstaki (Bactospeine) was the most toxic to larvae of P. xylostella followed by B.t. subsp. thuringiensis and B.t. subsp. kurstaki (lab culture). The B.t.t. and B.t.k. (Bactospeine) were found to be less toxic to the larvae of Bombyx mori than the other species.

Keywords

Bacillus thuringiensis, Subspecies, Toxicity, Plutella xylostella, Bombyx mori.

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