International Journal of Entomological Research
https://esciencepress.net/journals/index.php/IJER
<p align="justify">International Journal of Entomological Research publishes original research articles and critical reviews on all aspects of entomology. Quality research articles and critical reviews from around the world cover: evolution, biology, morphology, physiology, anatomy, taxonomy, ecology, development, behaviour, toxicology, genetics and systematics of both recent and fossil insects are accepted for publication. Journal covers the whole field of general, experimental, systemic and applied entomology and acarology. Brief comments and letters to the editor contributing to the previously published articles are also welcomed.</p>EScience Pressen-USInternational Journal of Entomological Research2310-5119<p>Submission of a manuscript infers that the work described has not been published before (except in the form of an abstract or as part of a published lecture, or thesis). It is also not under consideration for publication elsewhere.</p><p>All works published by International Journal of Entomological Research is freely available to copy, distribute, transmit and adapt the work provided the original work and source is appropriately cited under a CC BY license (Creative Commons Attribution 4.0 International License). The CC BY license allows for maximum dissemination and re-use of open access materials and is preferred by many research funding bodies. Under this license users are free to share (copy, distribute and transmit) and remix (adapt) the contribution including for commercial purposes, providing they attribute the contribution in the manner specified by the author or licensor (<a href="http://creativecommons.org/licenses/by/4.0/legalcode" target="_blank">read full legal code</a>).</p><p>Under Creative Commons, authors retain copyright in their articles.</p>Bioefficacy of different insecticides on cowpea aphid (Aphis craccivora Koch)
https://esciencepress.net/journals/index.php/IJER/article/view/2629
<p>Aphid (<em>Aphis craccivora</em> Koch) is one of the serious pests of cowpea. Bioefficacy of four insecticides with different concentrations namely Jholmol (125 ml/L), Neemix (2 ml/L), Cannabis extract (100 g/L), Chlorpyrifos 50% EC and Cypermethrin 5% EC (2 ml/L) along with control were evaluated against aphid at Research Station of Agriculture and Forestry University, Rampur, Chitwan, Nepal in 2018. Five treatments; four different insecticides and control were laid out in a randomized complete block design with four replications. The results indicated that all the insecticides were significant for aphid reduction. The effects were higher in Neemix followed by Jholmol and cannabis extract. The yield of cowpea was significantly highest (11.10 t/ha) with Neemix application, while lowest in control (7.58 t/ha). The highest net profit (NRs.61670) was obtained in Neemix followed by treatments of Jholmol (NRs.46175) and Cannabis extract (NRs.35815). The lowest incremental Cost/Benefit ratio was obtained in Neemix (1.341) and followed by treatments of, jholmol (1/1.12) and Cannabis extract (1/0.85), respectively. Thus, application of Neemix @ 2 ml/L could be used in cowpea to control aphid with high yield.</p>Roshan DhakalReeta GhimireMadan SapkotaSamita ThapaAtal K. BhattaRajendra Regmi
Copyright (c) 2019 International Journal of Entomological Research
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2019-06-282019-06-2871010710.33687/entomol.007.01.2629Fall Armyworm (FAW) Epidemic in Sri Lanka: Ratnapura District Perspectives
https://esciencepress.net/journals/index.php/IJER/article/view/2887
<p>A recent outbreak of FAW (<em>Spodoptera frugiperda</em>) caused a substantial yield loss in corn was recorded in Sri Lanka especially from Uva, Eastern and North Central provinces. This was first reported in Sri Lanka in August 2018 and over the last six months, the livelihood of the majority of small-scale farming families was greatly affected. National mobilization of resources, agriculture related institutions together with university academia actively participated with the government campaign of combating the pest and improving the livelihood of affected people all over the country. The effort of this short communication is to describe the magnitude of FAW infestation, its implications in Ratnapura District, Sri Lanka and the contribution of the inter-institutional support towards the sustainable management of the Fall ArmyWorm epidemic in Sri Lanka. Amount of land extent used for corn cultivation in Ratnapura district was estimated as 292.65ha, while 32.95 ha were infected with the pest (11.3%). Highest provincial land extent use for corn in Sri Lanka was Uva province where considerable pest damage has been reported. In Uva, total 42436.7 ha were cultivated in maha season where 30998.3 ha has infected and destroyed (73%). Even though corn was cultivated in lower land extent in Ratnapura, effective and organized disaster management response in Ratnapura was able to minimize the pest impact to 11.3% from total losses.</p>Nadeeka PereraManjula MagamageAruna KumaraHarshana GalahitigamaKapila DissanayakeChandima WekumburaPrasad IddamalgodaPrasad IddamalgodaChandana SiriwardhanaPriyantha Yapa
Copyright (c) 2019 International Journal of Entomological Research
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2019-06-282019-06-2871091810.33687/entomol.007.01.2887Microhabitat Characteristics of Myopopone Castanea (Hymenoptera: Formicidae) in Oil Palm Plantation
https://esciencepress.net/journals/index.php/IJER/article/view/2731
<p>Ants are social insects which widespread and play many important roles in an ecosystem. <em>Myopopone castanea</em> ants are a predator for the pre-adult stage of pest <em>Oryctes rhinoceros</em> which is one of the important pests in oil palm plantations. At the oil palm plantations, <em>M. castanea</em> and pre-mature stadia from pests O. rhinoceros live on decaying palm oil stems. This study aimed to explore the presence and the microhabitat characteristics of <em>M. castanea</em> ant in oil palm plantation so that mass rearing of <em>M. castanea</em> ants can be carried out in the laboratory to support the natural enemy augmentation program in biological control of O. rhinoceros pest. The exploration of ant nests was carried out in two plantation locations: smallholder oil palm plantations in Tanah Merah sub-district, Binjai Selatan Subdistrict, Binjai and PTPN 2 and PTPN 4 in Deli Serdang and Serdang Bedagai districts, North Sumatra Province. The results showed that the colonies of <em>M. castanea</em> in both of plantations vary greatly in the size of the number and stage of the ant development stage. Average of abiotic factors in the microhabitat of <em>M. castanea</em> ants in PTPN plantation (t = 29.7 <sup>0</sup>C, Rh = 70%, pH = 6.03 and C / N ratio = 66.18%), while for smallholder plantation (t = 29.1 <sup>0</sup>C, Rh = 70.9%, pH = 6.39 and C / N ratio = 69.01%). A suitable abiotic environment will support life and mass rearing of <em>M. castanea</em> ant colonies.</p>Widihastuty WidihastutyMaryani C. TobingMarheni MarheniRetna A. Kuswardani
Copyright (c) 2019 International Journal of Entomological Research
https://creativecommons.org/licenses/by-nc/4.0
2019-06-282019-06-2871192510.33687/entomol.007.01.2731