Ecofriendly management of Pseudodendrothrips mori Niwa and its impact on abundance of predatory coccinellids in mulberry ecosystem


Affiliations

  • Central Silk Board, Government of India, Regional Sericultural Research Station, Salem, Tamil Nadu, 636017, India

Abstract

Efficacy of neem oil, pongamia oil, spray of strong jet of water, and the recommended pesticide, dichlorovos (76 EC) when compared to the untreated control against the thrips, Pseudodendrothrips mori Niwa (Thysanoptera: Thripidae) infesting mulberry as well as their bio-safety to the predatory coccinellids were studied under field conditions. Two numbers of sprays were effected, i.e., first at 10 Days After Pruning (DAP) of mulberry garden and second at 20 DAP with the treatments asT1=Two sprays of neem oil, T2=Two sprays of pongamia oil, T3=Neem oil followed by pongamia oil, T4=Pongamia oil followed by neem oil, T5=Neem oil followed by water jetting, T6=Pongamia oil followed by water jetting, T7=Two numbers of water jetting, T8=Dichlorovos followed by water jetting, T9=Two spray of Dichlorovos and T10=Untreated Control. The population of thrips and predatory coccinellids were recorded one day prior to each spray and @ 1, 3, 7 and 10 days after each spray up to 30 DAP. The mean values revealed that highest reduction in thrips population (84.35%) was recorded with two numbers of water jetting (T7) and next best treatments were T8 dichlorovos followed by water jetting (75.17%) and T5 neem oil followed by water jetting (67.02%). With respect to the abundance of predatory coccinellids highest population (6.83) was recorded in the plots treated two times with water jetting, spray of pongamia oil followed by water jetting (4.82) and neem oil followed by water jetting (4.31), whereas least population was recorded with two sprays of dichlorovos (1.04). Among the various treatments, two sprays of forcible jet of water (water jetting) in 10 days interval were found superior in reducing the population of thrips and to conserve the predatory coccinellids in mulberry ecosystem.

Keywords

Mulberry thrips, neem oil, pongamia oil, predatory coccinellids, Pseudodendrothrips mori, water jetting

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References

Banjo AD, Hassan AT, Ekanayake IJ, Dixon AGO, Jackal LEN. 2004. Effect of Aleurodicus dispersus Russell (Spiralling whitefly) on growth indices and yield of three genotypes of cassava (Manihot esculenta Crantz).

J Res Crops. 5: 252-260.

Bhattacharya SS, Chakraborty N, Rao KVSN, Sahukundu AK. 1993. Thrips of mulberry in West Bengal and the record of thrips infecting mulberry in India. Environ Ecol. 11: 239-240.

Bissdorf J. 2005. Field Guide to Non-Chemical Pest Management in Mango Production. Pesticide Action Network (PAN), Hamburg, Germany. Available from: http://www.oisat.org/downloads/field_guide_mango.pdf Dandin SB, Jayaswal J, Giridhar, K. 2003. Hand book of sericulture technologies, Central Silk Board, Bangalore, India, 53 pp.

David BV, Ramamurthy VV. 2011. Elements of Economic Entomology. Namrutha Publications, Chennai, Tamil Nadu, India, 344 PP.

Dhawan AK, Simwat GS. 1997. Insecticide induced resurgence of sucking pests in upland cotton in Punjab, India. In: Third International Congress of Entomological Sciences, National Agricultural Research Centre, Islamabad, Pakistan.

Ellis B, Bradley F. 1996. The Organic Gardener's Handbook of Natural Insect and Disease Control. Rodale Press, Emmaus, Pennsylvania, USA, 433 pp.

Galanihe LD, Jayasundera, MUP, Vithana A, Asselaarachchi N, Watson GW. 2010. Occurrence, distribution and control of papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae), an invasive alien pest in Sri Lanka. Trop Agri Res Ext. 13: 81-86.https://doi.org/10.4038/tare.v13i3.3143

Geetha Bai M, Marimadaiah B, Narayanaswamy KC, Ramegowda T. 2001. The spiralling whitefly, Aleurodicus dispersus Russell (Homoptera: Aleyrodidae), A pest of mulberry in Karnataka. Sericologia 41: 121-127.

Horowitz AR. 1986. Population dynamics of Bemisia tabaci (Gennadius) with special emphasis on cotton field. Agri Ecosys Environ. 17: 37-47. https://doi.org/10.1016/01678809(86)90025-3

Naranjo SE, Flint HM. 1995. Spatial distribution of adult Bemisia tabaci (Homoptera: Aleyrodidae) in cotton and development and validation of fixed precision sampling plans for estimating population density. Environ Entomol. 24: 261-270. https://doi.org/10.1093/ee/24.2.261

Prasad BC, Chakraborty N, Kumar MVS, Gupta SK, Das NK. 1995. Biological control of thrips with a native predator Micraspis discolor (Coleoptera: Coccinellidae) - A new record. Ann Entomol. 15: 1-5.

Rashid MM, Mofazzel Hossain M, Alam, MZ, Ibrahim, M, Bhuiyan MKA. 2003. Seasonal abundance and control of spiralling whitefly, Aleurodicus dispersus Russell on guava. Pakistan J Biol Sci. 6: 2050-2053.https://doi.org/10.3923/pjbs.2003.2050.2053

Ravikumar J, Geetha M, IsaiarasuL, Sakthivel N, Radhakrishnan, S, Balakrishna,R, Qadri, SMH.2012.

Bio- efficacy of amalgamated plant extracts against thrips, Pseudodendrothrips mori (Niwa) on mulberry.

Acta Biol Indica 1: 214-219.

Sakthivel N, Qadri SMH. 2010a. Influence of feeding thrips infested mulberry (Morus alba L.) leaves on rearing performance of the silkworm Bombyx mori L. Entomon 35: 127-130.

Sakthivel N, Qadri SMH. 2010b. Impact of insecticides and botanicals on population build-up of predatory coccinellids in mulberry. J Biopest. 3: 85-87.

Sakthivel N, Qadri SMH. 2010c. Efficacy of certain insecticides and botanicals against mulberry thrips, Pseudodendrothrips mori Niwa (Thysanoptera: Thripidae). Indian J Entomol. 72: 152-154.

Sakthivel N, Balakrishna R, Qadri SMH. 2011. Comparative efficacy of water jetting and chemical measures against major sucking pests of mulberry and their safety to natural enemies. J Biopest. 4: 219-230.

Sakthivel N, Balakrishna R, Ravikumar J, Samuthiravelu P, Isaiarasu L,Qadri SMH. 2012 Efficacy of botanicals against jassid, Empoasca flavescens F. (Homoptera: Cicadellidae) on mulberry and their bio-safety to natural enemies. J Biopest. 5: 246-249.

Sharma HC, Adlakha RL. 1986. Toxicity of some insecticides to the adults of Coccinella septempunctata L. after predating upon poisoned cabbage aphid Brevicoryne brassicae L. Indian J Entomol. 48: 204-211.

Tank BD, Korat DM, Board PK. 2007. Relative toxicity of some insecticides against Cheilomenes sexmaculata (Fab) in laboratory. Karnataka J Agri Sci. 20: 639-641.

Venugopalapillai S, Krishnaswami S, 1983. Population of mulberry thrips, Pseudodendrothrips mori (Niwa) in relation to weather factors. Indian J Seric. 21: 46-52.


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