Refine your search
Collections
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Kumar, K.
- Occurrence, Distribution and N2 Fixing Ability of Diazotrophic Bacterial Isolates from Different Rice Production Systems
Abstract Views :268 |
PDF Views:0
Authors
Affiliations
1 Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, T.N., IN
1 Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, T.N., IN
Source
Asian Journal of Bio Science, Vol 8, No 2 (2013), Pagination: 229-233Abstract
Rice is now grown in different production systems viz., lowland, system of rice intensification (SRI) and aerobic rice. Since the agronomic conditions prevailing in these systems are different, the nitrogen fixing ability of the diazotrophic bacteria associated with these production systems may also vary. Hence, heterotrophic diazotrophs were isolated from the rhizosphere soils of rice grown in three different rice growing systems to assess their N2 fixing potential. The diazotrophs were isolated from five different locations in Tamil Nadu.The different diazotrophs isolated belonged to the genera Azospirillum, Azotobacter, Beijerinckia, Derxia and Pseudomonas. A total of hundred and ten isolates obtained were subjected to acetylene reduction assay (ARA) and ninety eight isolates recorded significant amount of nitrogenase activity in the range of 185.73 to 3794.55 nmoles of ethylene mg of protein-1 h-1. Maximum nitrogenase activity was recorded by Derxia (3794.55 nmoles of ethylene mg of protein-1 h-1) isolated from Trichy (lowland). Among the three different rice production systems, isolates obtained from lowland rice (Derxia - 3794.5 nmoles of ethylene mg of protein-1 h-1) recorded higher nitrogenase activity followed by aerobic rice isolate (Pseudomonas - 2194.89 nmoles of ethylene mg of protein-1 h-1) and SRI rice isolate (Azotobacter - 1971.85 nmoles of ethylene mg of protein-1 h-1). The results revealed marked variation in the ARA of the diazotrophic isolates obtained from lowland, SRI and aerobic rice.Keywords
Acetylene Reduction Assay, Diazotrophs, Heterotrophs, Lowland, Aerobic, SRI
References
- Allen, E.K. (1953). Experiments in soil microbiology. Burgess Publ. C., Minnepolis, Minn., 107.pp.
- Andrade, G., Esteban, E., Velascol, L., Maria, J.L. and Bedmar, E.J. (1997). Isolation and identification of N2-fixing microorganisms from the rhizosphere of Capparis spinosa (L.). Plant Soil., 197:19–23.
- Becking, J.H. (1981). The family Azotobacteraceae. In: Ballows, A., Truper, H.G., Dworkin, M., Harder, W., Schleifer, K.H. (Eds.), The Procaryotes: A handbook on habitats, isolation and identification of bacteria, Springer, Heidelberg, pp. 795–817.
- Becking, J.H. (1961). Studies on nitrogen – fixing bacteria of the genus Beijerinckia I. Geographical and ecological distribution in soils. Plant Soil., 14: 49-81.
- Bin Huang, Kewei Yu and Gambrell, R.P. (2009). Effects of ferric iron reduction and regeneration on nitrous oxide and methane emissions in a rice soil. Chemosphere, 74:481–486.
- Burris, R.H. (1974). Methodology. In: Biology of nitrogen fixation. Ed. A. Quispel. pp. 3-42. North Holland P Burris R H 1974. North Holland Publishing Co., Amsterdam. Publishing Co., Amsterdam.
- Cochran, W.G. (1950). Estimation of bacterial densities by means of the most probable number. Biometrics., 6: 105-116.
- Dobereiner., J. (1980). Forage grasses and grain crops. In: Methods for evaluation of biological nitrogen fixation, pp. 535–555. Edited by J. F. J. Bergersen. Chichester: Wiley.
- Gerhardt, P., Murray, R.G.E., Costelow, R.N., Nexter, E.W., Wood, W.A., Kreig, N.P. and Phelleps, G.G. (1981). Manual of methods for general bacteria. American Society of Microbiology, Washington D.C., U.S.A. Bürgmann, Helmut, Franco, Widmer, William, Von Sigler and Josef, Zeyer (2004). New molecular screening tools for analysis of freeliving diazotrophs in soil. Appl. Environ. Microbiol., 70: 240–247.
- Holt, J.G., Kreig, Sneath, N.R., Staley, P.H.A. and Williams, J.T. (1994). Bergey’s manual of determinative bacteriology. Williams and Wilkins, Baltimore, U.S.A.
- Kennedy, I.R., Choudhury, A.T., Mihály, M.A., Roughley, L.R.J. and Nguyen, Thanh Hien.(2004). Non-symbiotic bacterial diazotrophs in crop-farming systems: Can their potential for plant growth promotion be better exploited. Soil Biol. Biochem., 36: 1229–1244.
- Khourgami, M., Hoseini, Varaki, Mobasser, H.R and Nasrollahi, H. (2012). Study the effect of nitrogen division and plant density on morphological characteristics related to lodging in rice ‘Tarom Hasansaraie’ Cultivar. Internat. J. Sci. & Adv. Tech., 2: 47-50.
- King, J.W., Ward, M.K. and Raney, D.E. (1954). Two simple media for the demonstration of pyocyanin and fluorescein. J. Lab & Clin. Med., 44: 301-307.
- Ladha, J.K and Reddy, P.M. (2003). Nitrogen fixation in rice systems: State of knowledge and future prospects. Plant Soil, 252: 151-167.
- Vessey, J.K. (2003). Plant growth promoting rhizobacteria as biofertilizers. Plant Soil., 55: 571–586.
- Effect of Newer Insecticides to Natural Enemies in the Coastal Rice Ecosystem of Karaikal District, Union Territory of Puducherry
Abstract Views :240 |
PDF Views:2
Authors
Affiliations
1 Department of Agricultural Entomology and Nematology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, KARAIKAL (PUDUCHERRY), IN
1 Department of Agricultural Entomology and Nematology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, KARAIKAL (PUDUCHERRY), IN
Source
Asian Journal of Bio Science, Vol 10, No 1 (2015), Pagination: 39-42Abstract
To study the effect of newer insecticides viz., flubendiamide 39.35 M/M SC, chlorantraniliprole 18.5 SC, thiamethoxam 25 WG, bifenthrin 10 EC, cartap hydrochloride 50 SP, indoxacarb 14.5 SC, emamectin benzoate 5 SG and phosphamidon 40 SL to natural enemies of rice pests, a field experiment was conducted at the Eastern farm of Pandit Jawaharlal Nehru College of Agriculture and Research Institute (PAJANCOA and RI), Karaikal during late Rabi 2013 (Nov.- Feb.). Two foliar applications were carried out at an interval of fifteen days after leaf folder larvae reached economic threshold level (10 %). The results showed that the overall mean population of coccinellids was found to be more in the untreated check (1.31 and 1.65 / hill) followed by indoxacarb 14.5 SC at 72.50 g a.i. / ha (0.92 and 1.16 / hill) in the first and second foliar application. The overall mean population of spiders was high in the untreated check (1.32 and 1.55 / hill), followed by indoxacarb 14.5 SC at 72.50 g a. i. / ha (1.07 and 1.15 / hill) over the other treatments.Keywords
Newer Insecticides, Predatory Coccinellids, Spiders, Costal Rice Ecosystem.- Efficacy of Newer Insecticides against the Brinjal, Solanum melongena (L.) Shoot and Fruit Borer, Leucinodes orbonalis (Guen.) in Karaikal District, U.T. of Puducherry
Abstract Views :509 |
PDF Views:3
Authors
C. Kameshwaran
1,
K. Kumar
1
Affiliations
1 Department of Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, PUDUCHERRY (U.T.), IN
1 Department of Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, PUDUCHERRY (U.T.), IN
Source
Asian Journal of Bio Science, Vol 10, No 2 (2015), Pagination: 119-128Abstract
To evaluate the efficacy of newer insecticides against brinjal shoot and fruit borer, L. orbonalis, two supervised field experiments were conducted during Kharif 2010 (Field experiment I) and Rabi 2011 (Field experiment II) at Eastern farm of PAJANCOA and RI, Department of Horticulture, Karaikal with the variety PLR2, as an irrigated crop. Four rounds of foliar applications were given. Among the treatments the lowest mean per cent shoot damage was recorded in the treatment with chlorantraniliprole 20 SC @ 40 g a.i./ha followed by emamectin benzoate 25 WG @ 11 g a.i./ha, carbaryl 50 WP + wettable sulphur 50 WP @ 500 g a.i./ha and were superior than the untreated check. From the field experiment I and II, the treatment with chlorantraniliprole 20 SC @ 40 g a.i./ha recorded lesser infestation of shoot and fruit borer L. orbonalis followed by emamectin benzoate 25 WG @ 11 g a.i./ha and were superior than the other treatments on number and weight basis. The highest yield was observed in the treatment with chlorantraniliprole 20 SC @ 40 g a.i./ha (27.08 t.ha-1 and 36.10 t.ha-1) followed by emamectin benzoate 25 WG @ 11 g a.i./ha (23.61 t.ha-1 and 32.66 t.ha-1) compared to the untreated check (14.20 t.ha-1 and 18.46 t.ha-1) and recorded maximum benefit cost ratio in the field experiment I and II, respectively.Keywords
Brinjal, Leucinodes orbonalis, Newer Insecticides.References
- Bebitha, B. (2008). Biology of brinjal, Department of Biotechnology, Ministry of science and technology, Government of India. 1p.
- Bebitha, B. (2009). Studies on seasonal incidence and management of major pests of brinjal under precision farming system. M.Sc. (Ag.) Thesis, Tamil Nadu Agricultural University, COIMBATORE (T.N.) INDIA.
- Bheemanna, M., Hosaman, A., Sharanabasappa, C. and Patil, B.V. (2008). Bioefficacy of new insecticide chlorantraniliprole E2Y45 20 SC) against bollworms in cotton ecosystem. Pestol., 32(10): 37-39.
- Bhosale, B.B., Nishantha, K.M., Patinge, N.R. and Kadam, D.R. (2009). Comparative efficacy of microbial insecticides with new insecticide molecule E2Y45 against pod borer complex of pigeon pea. Pestol., 33(9): 38-42.
- Gomez, K.A. and Gomez, A.A. (1984). Statistical procedures for agricultural research. Wiley International Science Publications, John Wiley and Sons, New York. 680 pp.
- Hosamani, A., Sharanabasappa, C., Bheemanna, M., Sreenivas, A.G., Suresh, B.K., Sheevaleela and Patil, B.V. (2008). Bioefficacy of chlorantraniliprole against chilli fruit borer complex in irrigated chilli ecosystem. Pestic. Res. J., 20(2) : 240-242.
- Jarrod, T., Gus Lorenz, Kyle Colwell, Craig Shelton and Richard Edmund (2008). Rynaxypyr: A novel insecticide for control of Heliothis in conventional and bollgard cotton. In: Beltwide Cotton Confc., Memphis, Jan. pp. 8-11.
- Singh, Dileep K., Yadava, L.P., Pati, Rajesh and Gupta, Vijai Kumar (2008).Effect of insecticides in management of brinjal shoot and fruit borer (Leucinodes orbonalis Guene). Asian J. Bio Sci., 3 (1) : 99- 101.
- Mane, P.D. and Kulkarni, S.N. (2011). Population dynamics of white flies, Bemicia tabaci Genn. on brinjal. Internat. J. Pl. Protec., 4(1): 140-142.
- Misra, H.P. (2008). New promising insecticides for the management of brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.). Pest Mgmt. Hort. Ecosystems, 14 (2) : 140-147.
- Pal, Dharam and Singh, Jang Bahadur (2003). Relative efficacy of some insecticides against brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.) and their impact on fruit yield. J. Asia-Pacific Entomol., 6(1): 83-90.
- Panse, V.G. and Sukhatme, P.V. (1967). Statistical methods for agricultural works. Indian Council of Agricultural Research, New Delhi, 327 pp.
- Rajesh Chowdary, L., Bheemanna, M. and Ranjith Kumar, L. (2010). Bioefficacy of rynaxypyr (Coragen) 20 SC against fruit and shoot borer Earias vitella (Fab.) in okra. Internat. J. Plant Protec., 3(2): 316-318.
- Singh, J.P. (1970). Elements of vegetable pests. Vora and Co., p. 34-35.
- Snedecor, G.W. and Cochran, W.G. (1967). Statistical methods. Oxford and IBM publishing Co., New Delhi, p 593.
- Sohi, G.S. (1966). Pest of brinjal. Entomological Society of India, New Delhi. p. 148.
- Thillaikarasi, S. (2005). IPM modules development to manage the brinjal shoot and fruit borer, Leucinodes orbonalis (Guenee) (Pyralidae: Lepidoptera) in Karaikal region. M.Sc. (Ag.) Thesis, Tamil Nadu Agricultural University, Coimbatore, p. 101.
- Wargantiwar, R.K., Kumar, Ashwani and Kumar, Saima (2010). Bioefficacy of some botanicals and in combination with insecticide against Leucinodes orbonalis (Guenee) in brinjal under Allahabad agro-climatic condition. Internat. J. Plant Protec., 3 (2) : 245-247.
- Toxicity of Methoxy fenocide20F against Rice Leaffolder Cnaphalocrocis medinalis (Guenee)
Abstract Views :152 |
PDF Views:0
Authors
K. Kumar
1,
G. Santharam
2
Affiliations
1 Department of Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Puducherry (U.T.), IN
2 Department of Entomology, TamilNadu Agricultural University, Coimbatore (T.N.), IN
1 Department of Entomology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Puducherry (U.T.), IN
2 Department of Entomology, TamilNadu Agricultural University, Coimbatore (T.N.), IN
Source
Asian Journal of Bio Science, Vol 3, No 2 (2008), Pagination: 393-394Abstract
Chemical insecticides have been the backbone of insect pest control since the early 1950’s when organochlorine insecticides were first widely introduced. Indiscriminate use of the chemical insecticides which are active against a broad spectrum of insects led to many ecological problems. Chemicals are to be used judiciously which serve as a major tool in pest management.- Compatibility of Imidacloprid with Plant Pathogenic Antagonistic Microorganisms, Trichoderma viride (Pers) and Pseudomonas fluorescens (Migula) in Cotton
Abstract Views :189 |
PDF Views:0
Authors
Affiliations
1 Department. of Agricultural Entomology, P.J.N.College of Agriculture and Research Institute, Karaikal (Puducherry), IN
2 Department of Entomology, TamilNadu Agricultural University, Coimbatore ( T. N.), IN
3 Department of Microbiology, TamilNadu Agricultural University, Coimbatore ( T.S N.), IN
1 Department. of Agricultural Entomology, P.J.N.College of Agriculture and Research Institute, Karaikal (Puducherry), IN
2 Department of Entomology, TamilNadu Agricultural University, Coimbatore ( T. N.), IN
3 Department of Microbiology, TamilNadu Agricultural University, Coimbatore ( T.S N.), IN