Leaf Folder on Rice Cnaphalocrocis Medinalis

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PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST Leaf folder on rice Cnaphalocrocis medinalis. (Sinhala - Kola hakulana dalabuwa Tamil - Ilaimadichikkatti) Prevention Monitoring Direct Control Direct Control Restrictions If high infestation occurred in Observe the field for When the damage Spot application of recommended insecticide at the previous season, plough the leaf folder damage appears as patches beginning of damage symptoms will also help to conserve land just after harvesting. from tillering to in the beginning natural enemies. Remove shade around the flowering. remove the damaged field, better at the beginning Observe damaged leaves along with Fipronil 50g/l SC Toxic to bees larvae and destroy. of the season. leaves and WHO class II (Moderately availability of live hazardous) Leaf folder adult (M. Establishment of crop at a Shepard) correct time of season: larvae inside folded Maha season - Mid October leaves. Tebufenozide 200g/l SC WHO class U (Unlikely to present Yala season - April When infestation is acute hazard in normal use) Use recommended seed rate high, leaf folder Methoxyfenozide 240g/l Maximum number of treatment i.e. 40 to 50 kg per acre. moth can also be observed SC 3 /year. But no more than 2 Use recommended fertilizer should be sprayed consecutively. based on leaf colour chart. Randomly select 10 hills in a 500 m2 WHO class U C. medinalis larva within rice Split application of nitrogen area. If 10 larvae are leaf. (M. Shepard) fertilizer. observed and 25% Chlorfluazuron 50g/l EC WHO class U Remove grassy weeds time of leaves are to time in crop and damaged, then an Azadirachtin 10g/l EC Not classified by the WHO, but surroundings. Those weeds insecticide has to be considered not to present acute act as alternative host plants. applied for chemical hazard in normal use Avoid unnecessary pesticide control Chromafenozide 50g/l Not classified by the WHO, but application to conserve SC considered not to present acute natural enemies. hazard in normal use Avoid broad spectrum pesticide application Novaluron 100g/l EC WHO class II Acephate 75% SP WHO class II Sri Lanka CREATED: October AUTHORS: P.T. Bandara, M. U. P. Jayasundara, Rukmali Gunapala (Department of Agriculture) EDITED BY: Melanie Batman (CABI), Abdul Rehman (CABI) LOSE LESS, FEED MORE Plantwise is a CABI-led global initiative. www.plantwise.org .

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Agr. Nat. Resour. 54 (2020) 499–506 AGRICULTURE AND NATURAL RESOURCES Journal homepage: http://anres.kasetsart.org Research article Checklist of the Tribe Spilomelini (Lepidoptera: Crambidae: Pyraustinae) in Thailand Sunadda Chaovalita,†, Nantasak Pinkaewb,†,* a Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand b Department of Entomology, Faculty of Agriculture at Kamphaengsaen, Kasetsart University, Kamphaengsaen Campus, Nakhon Pathom 73140, Thailand Article Info Abstract Article history: In total, 100 species in 40 genera of the tribe Spilomelini were confirmed to occur in Thailand Received 5 July 2019 based on the specimens preserved in Thailand and Japan. Of these, 47 species were new records Revised 25 July 2019 Accepted 15 August 2019 for Thailand. Conogethes tenuialata Chaovalit and Yoshiyasu, 2019 was the latest new recorded Available online 30 October 2020 species from Thailand. This information will contribute to an ongoing program to develop a pest database and subsequently to a facilitate pest management scheme in Thailand. Keywords: Crambidae, Pyraustinae, Spilomelini, Thailand, pest Introduction The tribe Spilomelini is one of the major pests in tropical and subtropical regions. Moths in this tribe have been considered as The tribe Spilomelini Guenée (1854) is one of the largest tribes and the major pests of economic crops such as rice, sugarcane, bean belongs to the subfamily Pyraustinae, family Crambidae; it consists of pods and corn (Khan et al., 1988; Hill, 2007), durian (Kuroko 55 genera and 5,929 species worldwide with approximately 86 genera and Lewvanich, 1993), citrus, peach and macadamia, (Common, and 220 species of Spilomelini being reported in North America 1990), mulberry (Sharifi et.
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Int. J. Mol. Sci. 2015, 16, 21873-21896; doi:10.3390/ijms160921873 OPEN ACCESS International Journal of Molecular Sciences ISSN 1422-0067 www.mdpi.com/journal/ijms Article Identification of Genes Putatively Involved in Chitin Metabolism and Insecticide Detoxification in the Rice Leaf Folder (Cnaphalocrocis medinalis) Larvae through Transcriptomic Analysis Hai-Zhong Yu 1, De-Fu Wen 1, Wan-Lin Wang 2, Lei Geng 1, Yan Zhang 3 and Jia-Ping Xu 1,* 1 School of Life Sciences, Anhui Agricultural University, Hefei 230036, China; E-Mails: [email protected] (H.-Z.Y.); [email protected] (D.-F.W.); [email protected] (L.G.) 2 Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China; E-Mail: [email protected] 3 Institute of Sericulture, Anhui Academy of Agricultural Sciences, Hefei 230061, China; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel./Fax: +86-551-6578-6691. Academic Editor: Lee A. Bulla Received: 19 May 2015 / Accepted: 25 August 2015 / Published: 10 September 2015 Abstract: The rice leaf roller (Cnaphalocrocis medinalis) is one of the most destructive agricultural pests. Due to its migratory behavior, it is difficult to control worldwide. To date, little is known about major genes of C. medinalis involved in chitin metabolism and insecticide detoxification. In order to obtain a comprehensive genome dataset of C. medinalis, we conducted de novo transcriptome sequencing which focused on the major feeding stage of fourth-instar larvae, and our work revealed useful information on chitin metabolism and insecticide detoxification and target genes of C.
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Journal of Entomology and Zoology Studies 2018; 6(4): 1172-1176 E-ISSN: 2320-7078 P-ISSN: 2349-6800 Screening and evaluation of entomopathogenic JEZS 2018; 6(4): 1172-1176 © 2018 JEZS fungi, Metarhizium anisopliae, against rice leaf Received: 29-05-2018 Accepted: 30-06-2018 folder, Cnaphalocrocis medinalis (Guenée) P Poontawee Department of Agricultural Science, Faculty of Agriculture P Poontawee and W Pongprasert natural resources and Environment, Naresuan Abstract University, Phitsanulok, The rice leaf folder, Cnaphalocrocis medinalis (Guenée), is a destructive insect pest of rice in Asia. Thailand Screening for the promising fungal strains of M. anisopliae from the C. medinalis cadavers collected W Pongprasert from the rice paddy field in lower northern Thailand for controlling C. medinalis was carried out. A total Department of Agricultural of 27 C. medinalis cadavers infected by M. anisopliae were obtained from 11 survey locations in 5 Science, Faculty of Agriculture provinces of lower northern Thailand. The pathogenicity screening found that three isolates of M. natural resources and anisopliae (MPC03, MST01 and MPL02) were highly efficient in controlling C. medinalis at 100% Environment, Naresuan mortality 6 days after application with LT50 at 3.01-3.23 days. The efficacy test revealed that those three University, Phitsanulok, isolates caused 100% mortality on C. medinalis 7 days after application. Thailand Keywords: Rice leaf folder, Metarhizium anisopliae, entomopathogenic fungi, screening, isolate Introduction The rice leaf folder, Cnaphalocrocis medinalis (Guenée), is an economically important rice insect pest in Asia [1, 2]. The larvae folds up the rice leaf from the rim, lives and scraps the leaf inside, leaving only the wax layer of rice leaf, thereby, causing white stripes on the damaged leaf and resulting in the reduction of photosynthetic ability and rice disease infection [3].
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Migration in Northern China
PLEASE NOTE: This is the Authors’ Accepted Manuscript version. The final publication is available at Cambridge Journals Online via http://dx.doi.org/10.1017/S0007485314000376. 1 Accepted for Bulletin of Entomological Research 2 Running title: X.-W. Fu et al. Seasonal migration of Cnaphalocrocis medinalis 3 4 Seasonal migration of Cnaphalocrocis medinalis (Lepidoptera: 5 Crambidae) over the Bohai Sea in northern China 6 7 Xiao-Wei Fu1, Chao Li1, Hong-Qiang Feng 2, Zhong-Fang Liu3, Jason W. Chapman4, 5, 8 Donald R. Reynolds4, 6 and Kong-Ming Wu1 * 9 10 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of 11 Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. 12 China. 13 2. Institute of Plant Protection, Henan Academy of Agricultural Sciences, 450002, 14 P.R. China. 15 3. Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan, 16 030032, P.R. China. 17 4. Department of Agro-Ecology, Rothamsted Research, Harpenden, Hertfordshire, 18 AL5 2JQ, United Kingdom. 19 5. Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall 20 TR10 9EZ, United Kingdom. 21 6. Natural Resources Institute, University of Greenwich, Chatham, Kent ME4 4TB, 22 United Kingdom. 23 24 * Author for correspondence. Tel: 0086-10-82105551. Email: [email protected] PLEASE NOTE: This is the Authors’ Accepted Manuscript version. The final publication is available at Cambridge Journals Online via http://dx.doi.org/10.1017/S0007485314000376. 25 Abstract: The rice leaf roller, Cnaphalocrocis medinalis (Guenée), is a serious 26 insect pest of rice with a strong migratory ability.
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