Acuta support downloads fullyfunctional evaluation. Image of lesser rice bug leptocorisa acuta on green. Badgujar department of plant pathology, college of agriculture, marathwada krishi vidyapeeth, parbhani m. A major target for insecticide applications both before and after training is the rice bug leptocorisa oratorius f. Paddy earhead bug % morphometry % biology % leptocorisa oratorius. The bionomics and control of leptocorisa acuta thunb with notes on other leptocorisa spp. Life table and population dynamics of a major pest. Similar results were obtained leptocorisa acuta hemiptera. Residues of carbaryl, lindane and monocrotophos on rice. Rice bug suggested common name leptocorisa acuta thunberg. One of the biggest pests in rice plants were walang sangit leptocorisa acuta thunb. Leptocorisa acuta, rice earhead bug, paddy stink bug hemiptera. Rice seed bugsdirty panicle disease james litsinger.
Selection of isolates of entomopathogenic fungi and the. Where an attack by sucking plant fluids resulting grain hollow and fragile in the mill. Studies on the insecticidal activity, cytogenecity and. Hewan ini mudah dikenali dari bentuknya yang memanjang, berukuran sekitar 2 cm, berwarna coklat kelabu, dan memiliki belalai proboscis untuk.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Download acuta software for evaluation, including acuta validator av, acuta pdf tools apt and acuta regulatory intelligent documents arid. In case of severe attack can reduce rice yields reached 100%. Species specific differences were found in all these features. The adult insect is long and slender, about 1417 mm long and 34 mm wide.
A computer simulation model of the bugs population dynamics was formulated using the information generated on the thermal requirements of development stages. Leptocorisa oratorius leproroverview eppo global database. This pest feeds on a variety of graminaceous plants, e. Attempts to control this pest is mostly done with synthetic pesticides. Fao 1993, a common and conspicuous insect that emits a strong odour. Biological studies on paddy earhead bug, leptocorisa oratorius fabricius hemiptera. Ecofriendly management of rice bug leptocorisa acuta. Selection of isolates of entomopathogenic fungi and the bioefficacy of their liquid production against leptocorisa oratorius nymphs siti herlinda 1, sri indah mul yati2 and suwandi 1 1 department of pest and discase, faculty of agriculture, universitas sriwijaya, kampus inderalaya, jalan raya palembangprabumulih km 32, ogan ilir, inderalaya 30662, indonesia. Download this image of lesser rice bug on green leaves alydidae insect animal photo now. The initial population of this notorious insect pest was collected from the field near chinsurah rice research center 2253 n, 8823 e, hooghly, west bengal, india and was. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Sebagai insektisida nabati pengendali walang sangit leptocorisa acuta pada tanaman padi author nafa novika listianti. Analysis of the fatty acid content of phl by gcms showed that it contained chaulmoogric acid, hydnocarpic acid, gorlic acid, lignoceric acid, palmitic acid, oleic acid and stearic acid. Defensive secretion of rice bug, leptocorisa oratorius fabricius, hemiptera.
Feeding fauna and foraging habits of tiger beetles found. Deterioration of rice grain quality due to rice earhead. During the heat of midday, they leave the rice crop in search of wild grassy areas pathack and khan 1994. Each line was exposed to four infestation densities for 21 d. Status resistensi walang sangit leptocorisa acuta f. Leptocorisa acuta is a major pest in the crops, especially in rice. These bugs also seek shelter during dry months corbett 1930.
Rice bugs damage rice by sucking out the contents of developing grains from preflowering spikelets to soft dough stage, therefore causing unfilled or empty grains and discoloration. Three of the lines, c2, ir64, and psbrc20, are grown in. In the last decade, farmers intensively use synthetic insecticides that can spur resistance. Pada kesempatan ini, penulis men gucapkan banyak terima kasih kepada semua pihak yang membantu dalam penulisan skripsi ini sehingga dapat. This page contains pictures and information about paddy bugs that we found in the brisbane area, queensland, australia. Leptocorisa oratoria, the rice ear bug, is an insect from the family alydidae, the broadheaded bugs. The fatty acid rich fraction obtained from the petroleum ether extractable portion of hydnocarpus laurifolia phl seeds exhibited significant insecticidal action on rice bug, leptocorisa acuta lc 50 8 mgml. Leptocorisa oratorius occupies the same status in parts of kerala, madhya pradesh, orissa, tamil nadu and west bengal. Early resistance detection needs to be done so that the status of pest resistance can be determined earlier that is useful in preparing a. Botanical pesticides a major alternative to chemical. The influence of the rice bug leptocorisa oratorius on.
Stain to detect rice bug feeding sheath litsinger, j. Leptocorisa acuta adalah serangga yang menjadi hama penting pada tanaman budidaya, terutama padi. The efficacy of insecticides against eysarcoris trimaculatus distant and leptocorisa acuta thunberg, grainfeeding pests of rice in north queensland, was. They appear to have only a marginal impact on the larvae of leptocorisa acuta, a major insect pest of paddy rice. Body length 15mm we found a few of those bugs along bulimba creek in. Acid fuchsin technique to stain stylet sheaths of the rice bug leptocorisa.
Note, there is a related species, leptocorisa oratorius, but research in indonesia concluded that. Leptocorisa acuta thunberg can be found on many crop plants in the family poaceae grasses, especially rice, and is a reported pest of economic significance in riceproducing countries like india, australia, and china schaefer and panizzi 2000. Three of the lines, c2, ir64, and psbrc20, are grown in the philippines. It is most active during early mornings and evenings when the sun is not strong. India introduction rice is the staple food of more than 60 per cent of the.
The user interface, speed, and builtin intelligence make acuta pdf tools the most efficient and powerful in the industry. Pdf biological studies on paddy earhead bug, leptocorisa. Walang sangit wikipedia bahasa indonesia, ensiklopedia bebas. Effect of rice bug leptocorisa oratorius hemiptera. Systematic position phylum arthropoda advertisements. Leptocorisa acuta are crepuscular, active during the early morning and late afternoon. Defensive secretion of rice bug, leptocorisa oratorius fabricius. This species is commonly confused with leptocorisa acuta, a similar and closely related species, called the rice earhead bug. Specific differences in immature stages, oviposition sites. Odorantbinding proteins obps and chemosensory proteins csps are thought to be responsible for the initial biochemical. The immature stages, preferred oviposition sites, hatching patterns and egg morphology of two important rice pest species, leptocorisa oratorius fabricius and l. General information about leptocorisa oratorius lepror.
Ear bug leptocorisa acuta thunberg is an important sucking insect pest which suckout the milky juice of developing grains causing them degradation in. Identification and expression analysis of odorant binding. Residues of carbaryl, lindane and monocrotophos on rice treated for control of rice bug, leptocorisa oratorius fab. The fourth, ir721642011 is an unreleased experimental line of an o. Acuta pdf tools is a set of practical, essential and very powerful tools to prepare pdf documents for regulatory submissions. It may cause 30% annihilation of crop at milky or soft dough stage to harvesting under upland rice cultivation tiwari et al. It is generally distributed throughout india but is more prevalent in bengal, bihar, uttar pradesh and southern states.
Pdf life table and population dynamics of a major pest. Leptocorisa acuta, rice earhead bug, paddy stink bug. Management of ear bug leptocorisa acuta thunberg infesting rice. And search more of istocks library of royaltyfree stock images that features agricultural field photos available for quick and easy download. The nymphs were observed to pass through six instars with in the duration of 24 and 22 days respectively on r and nr host. The most common species of rice bug are leptocorisa oratorius f. Nimfa walang sangit leptocorisa acuta serangga dewasa berbentuk ramping dan berwarna coklat, berukuran panjang sekitar 14 17 mm dan lebar 3 4 mm dengan tungkai dan antenna yang panjang. Deterioration of rice grain quality due to rice earhead bug, leptocorisa acuta thunb. The life table study of the rice bug, leptocorisa acuta thunb. Specific differences in immature stages, oviposition sites and. Setelah menjadi imago serangga ini baru dapat kawin setelah 4 6 hari, dengan masa pra peneluran 8,1 dan. Walang sangit leptocorisa oratorius fabricius, hemiptera. Specific differences in immature stages, oviposition sites and hatching patterns in two rice pests, leptocorisa oratorius fabricius and l.
Botanical pesticides a major alternative to chemical pesticides. As rice is a commercial crop, farmers depend on chemical insecticides for the control of the insect pests. Alydidae, is a notorious pest in asia, and it is significantly attracted by the volatiles derived from host plants. The harmful effects of chemical pesticides on human health and the environment led to the discovery of the.