Refine your search
Co-Authors
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
Kuttalam, S.
- Impact of Spirotetramat on the Growth of Beneficial Microorganisms
Abstract Views :192 |
PDF Views:119
Authors
Affiliations
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, IN
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 24, No 1 (2010), Pagination: 82-84Abstract
Studies were conducted to evaluate the compatibility of spirotetramat 150 OD with beneficial microorganisms, viz., Trichoderma viride, Beauveria bassiana, Metarhizium anisopliae and Pseudomonas fluorescens under laboratory conditions in Coimbatore, Tamil Nadu, during 2007-2008. Radial growth of T. viride and M. anisopliae in spirotetramat at 75 g a.i. ha−1 was 18.33 and 20.00 mm, respectively, at 72 h of inoculation with the untreated check recording 46.00-48.00 mm. Growth of B. bassiana in spirotetramat at 45, 60 and 75 g a.i. ha−1 was 18.33, 14.00 and 8.67 mm, significantly lower than that in untreated check (28.00 mm) at 10 DAI. Spirotetramat was incompatible with T. viride, B. bassiana and M. anisopliae, but relative compatibility was significantly better than other insecticides at 45 g a.i. ha−1. Spirotetramat at all the doses did not inhibit P. fluorescens and was highly compatible.Keywords
Spirotetramat, Trichoderma viride, Metarhizium anisopliae, Beauveria bassiana, Pseudomonas fluorescens.- Toxicity of Insecticides to the Coccinellid Predators, Cryptolaemus montrouzieri Mulsant and Scymnus coccivora Ayyar of Papaya Mealybug, Paracoccus marginatus Williams and Granara De Willink
Abstract Views :318 |
PDF Views:134
Authors
Affiliations
1 National Research Centre for Citrus, Amravati Road, Nagpur 440 010, Maharashtra, IN
1 National Research Centre for Citrus, Amravati Road, Nagpur 440 010, Maharashtra, IN
Source
Journal of Biological Control, Vol 27, No 1 (2013), Pagination: 18–23Abstract
Studies were carried out under laboratory conditions to assess the relative toxicity of insecticides viz., chlorpyriphos, dimethoate, profenophos, carbofuran, buprofezin, imidacloprid, thiamethoxam and spirotetramat against the non-target beneficials of papaya mealybug, Paracoccus marginatus (Williams and Granara de Willink) viz., Cryptolaemus montrouzieri Mulsant and Scymnus coccivora Ayyar. Among the test chemicals, thiamethoxam registered highest toxicity for C. montrouzieri grubs (LC50 156.65 ppm) and S. coccivora adults (LC50–27.4968 ppm) while imidacloprid (LC50–156.07 ppm) to Cryptolaemus adults. All the test insecticides viz., chlorpyriphos, dimethoate, profenophos, carbofuran, buprofezin, imidacloprid, thiamethoxam and spirotetramat were found safe to C. montrouzieri and S. coccivora based on selective toxicity ratio and sequential testing scheme. By probit substitution method, only chlorpyriphos and buprofezin were found safe to C. montrouzieri, while the rest of the insecticides were highly toxic to nontarget insects.Keywords
Selective Toxicity, Cryptolaemus montrouzieri, Scymnus coccivora, Insecticides.References
- Abbott WS. 1925. A method of computing the effectiveness of an insecticide. J Econ Ent. 18: 265–267.
- Finney DJ. 1971. Probit analysis. 3rd Edn., Cambridge University Press, Cambridge, England, 333 p.
- IOBC (International Organization for Biological and Integrated Control of Noxious Animals and Plants). 2008. IOB (Global Newsletter).http://www.unipa.it/ IOBC/view.php status.
- Johansen CA, Mayer DF. 1990. Pollinator protection. A Bee and pesticide handbook. Wiewas, Cheshire, CT.
- Johnson MW, Tabashnik BE. 1999. Enhanced biological control through pesticide selectivity. In: T.S. Bellows and T.W. Fisher, (Eds). Handbook of Biological Control; Principles and Applications of Biological Control. New York, USA: Academic Press.
- Mani M, Krishnamoorthy A. 2001. Suppression of Maconellicoccus hirsutus on guava. Insect Envi. 6: 152.
- McComie LD, Gosine S, Siew P. 1997. The effect of Cryptolaemus montrouzieri (Mulsant) on the hibiscus mealybug, Maconellicoccus hirsutus (Green), on hibiscus plants in Trinidad. Trop Fruits Newsl. 23: 7–10.
- Meyerdirk DE, Kauffman WC. 2001. Status on the development of a biological control program for Paracoccus marginatus Williams, papaya mealybug, in the Caribbean. Paper presented at IV International Scientific Seminar of Plant Health.Veradero, Cuba. June 10–15, 2001 (abstract).
- Miller DR, William DJ, Hamon AB. 1999. Notes on a new mealybug (Hemiptera: Coccoidea: Pseudo coccidae) pest in Florida and the Caribbean: The papaya mealybug, Paracoccus marginatus Williams and Granara de Willink. Insecta Mundi 13: 179-81.
- Mullin CA, Saunders MC, Leslie TW, Biddinger DJ, Fleischer SJ. 2005. Toxic and behavioral effects of seed treatments used on Cry3Bb1 – and Cry1Ab/cprotected corn to carabidae. Env Ent. 34: 1626–1636.
- Papachristos DP, Milonas PG. 2008. Adverse effects of soil applied insecticides on the predatory coccinellid Hippodamia undecimnotata (Coleoptera: Coccinellidae). Biol Control 47: 77–81.
- Ramesh Babu T, Azam KM. 1987. Biology of Cryptolaemus montrouzieri Mulsant (Coccinellidae: Coleoptera) in relation with temperature. Biol Control 32(4): 381–386.
- Tanaka K, Endo S, Kanzano H. 2000. Toxicity of insecticides to predators of rice planthoppers: spiders, the mirid bug and the dryinid wasp. Appl Ent. Zool. 35 (1): 177–187.
- Walker A, Hoy M, Meyerdirk D. 2003. Papaya mealybug. Univ. Florida Featured creatures., http://creatures.ifas. ufl.edu/fruit/mealybugs/papaya_mealybug.htm.
- Effect of Abamectin Sprays on Cotesia plutellae (Kurdjumov) Population in Cabbage Fields
Abstract Views :211 |
PDF Views:98
Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 22, No 1 (2008), Pagination: 119-124Abstract
Plutella xylostella (L.), an economic pest of cabbage, is controlled by use of newer chemicals like abamectin. Hence, safety of abamectin to the indigenous parasitoid Cotesia plutellae (Kurdjumov) was studied. Two field experiments conducted revealed that abamectin was relatively safer in comparison to the standard checks used. The lowest dose of abamectin (9 g a.i ha−1) recorded 18.7 cocoons per ten plants and the higher dose (15 g a.i ha−1) recorded 15 cocoons per ten plants while the control registered 23 cocoons per ten plants, a week after second spray in the first field experiment. A week after four sprays in the second field, abamectin at 9 g a.i ha−1 registered 20.3 cocoons per ten plants, which was on par with abamectin at 11 g a.i ha−1 (19.3 cocoons per ten plants), followed by abamectin at 13 g a.i ha−1(18 cocoons per ten plants), while the control recorded 24.7 cocoons per ten plants, Spinosad at 75 g a.i ha−1 recorded 12.7 cocoons per ten plants which is better than endosulfan at 420 g a.i ha−1 (10 cocoons per ten plants) and cypermethrin at 70 g a.i ha−1(9.3 cocoons per ten plants). Abamectin is relatively safer to C. plutellae in comparison to the other insecticides tested.Keywords
Abamectin, Cabbage, Cotesia plutellae, Insecticides, Parasitoid Cocoons.- Relative Toxicity of Abamectin 1.9 EC to Egg Parasitoid, Trichogramma chilonis Ishii and Egg Larval Parasitoid, Chelonus blackburni (Cam.)
Abstract Views :181 |
PDF Views:0
Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), IN
Source
Asian Journal of Bio Science, Vol 2, No 2 (2007), Pagination: 92-95Abstract
Laboratory experiments were conducted to assess the safety of Abamectin 1.9 EC along with spinosad, cypermethrin and endosulfan to the egg parasitoid, Trichograma chilonis Ishii and the egg larval parasitoid, Chelonus blackburni (Cam.). The results revealed that abamectin 1.9 EC at all the doses tested had lesser adverse effect on the emergence of the Trichogramma adults compared to cypermethrin and endosulfan and also to its parasitisation potential. Similarly, abamectin at all concentrations caused lower mortality of C. blackburni compared to cypermethrin and endosulfan. The highest dose of abamectin tested recorded only 6.7 per cent adult mortality at 12 h after treatment (HAT). After 24 h of exposure, the mortality rate progressively increased in abamectin treatments. But endosulfan and cypermethrin at 420 g and 70 g a.i ha-1 registered the highest mortality of 53.3 and 76.7 per cent, respectively even at 6 HAT. The same trend was also noticed in adult emergence.Keywords
Abamectin, Chelonus blackburni, Insecticides, Trichogramma chilonis.- Acute Toxicity of Abamectin to Fishes, Cyprinus carpio Linnaeus and Tilapia mosambica (Peters)
Abstract Views :225 |
PDF Views:0
Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore (T.N.), IN