Department of agriculture contents page insects infesting rough rice 4 treatment insects infesting milled synergizedrice 6 sources tiveof infestation 7. Over 100 of species of insect pests found in rice crops but only few are potential threat, so only the most common and specific insect pests of rice are discussed here. The adult water weevil feeds on the leaves and causes little damage while the larvae feed on the roots and severely reduce the root system. The recommended control of insect pests is to develop and follow an integrated pest management plan. Rice plants, particularly hightillering, modern varieties, have an amazing ability to compensate for damage by insect pests. Major pests of rice and their management agriedu4u. Leaves are defoliated from the margin or tip irregularly. Insect pests of rice books international rice research institute. Southeast asia, where most rice is grown, populations of insect pests are held in check in most instances by abundant communities of natural enemies predators, parasites, and pathogens. Recently, environmentfriendly pest management measures have been introduced and adopted to manage rice insect pests and reduce the use of insecticides.
Common insect pests of rice and their natural biological control an illustrated guide to the insect pests that feed on rice plants and the organisms that feed on and control those pests. Wireworm injury can generally be identified as relatively large, ragged holes into seed pieces and buds or into young shoots. Regmi assistant professor department of entomology 2. Therefore paddy field insect pest identification is an important task to the sustainable agricultural. Rice provides more than 50% of the calories consumed in bangladesh, cambodia, myanmar, laos. The prevention of pest induced food crop losses at pre and. Importance of pesticides for growing rice in south and south east asia leonard p. Insect pests that infested all parts of rice crops were noticed to be yellow stem borer, striped rice stem borer, leaf folder, brown plant hopper, whitebacked plant hopper, rice gundhi bug, rice hispa, rice root weevil and rice caseworm. H s randhawa, s s aulakh and p s sarao pau, regional research station, gurdaspur rice section, department of plant breeding and genetics, pau, ludhiana. Rice insect pests many insects inhabit rice fields, but only a few are considered to be pest species missouri is lucky insect problems are less severe than in other rice producing areas of the us most common pest rice water weevil others rice stink bug, grasshoppers rare armyworms, chinch bugs. Ooi about 187 species of insects have been recorded on rice yunus and ho,1980, but few have ever become serious pests. Mar 25, 2012 rice horned caterpillarrice horned caterpillar. Seasonal variation in major insect pests incidence on rice.
Studies on major insect pests of rice crop oryza sativa journal of. Basmati rice ecosystems of uttar pardesh, india were surveyed for checking arthropod diversity in rice fields. We all know that weeds, diseases, snails, rats and birds can be equally or even more devastating. Pdf insect pests of rice lalitha devi guvvala academia. Insect pests and disease infestations are the primary constraints in rice oryza sativa production systems. The major insect pests of rice crop encountered in northeastern part of the uttar pradesh are. The rice water weevil is the most serious pest of rice in the us. Integrated pest management ipm is a broad ecological approach for pest management which employs all available skills, techniques and practices such as cultural, genetic, mechanical and biological methods including application of chemical pesticides as a last resort in a harmonious and compatible manner with a view to suppress pest population. The rice stem borer and brown plant hopper have the largest share. All wheat growing areas, especially in nwpz and peninsular india. Controlling insect pests of stored rice prepared by storedproduct insects section, biological sciences branch, marketing research division, agricultural marketing service, u.
Management of rice insect pests radcliffes ipm world textbook. The adult is a moth which lays its eggs in masses on rice leaves. Indeed, such predators reduce the risk of outbreaks of rice pests and their presence indicates the health of the rice field. Of course, insects are not the only pests that can cause economic damage to a rice crop. Rice insect pest complex and damage acrossthericegrowingregionsinchina,there are more than 200 species of insect pests that damage different life stages and different parts of rice 23, 52. Very early and lateplanted rice is most vulnerable to rice stink bug infestation. Eggs hatch and the larvae complete four to six instars stages of growth before pupating in a cocoon in the soil. It is native to texas, but was accidentally introduced into california, as well as china, north and south korea, taiwan, japan and europe. Grow resistant varieties like ratna, tkm 6, ir 20, ir 40. The insect pests that cause serious and economic damage are commonly known as major or important insect pests of rice and these major insect pests are given below with detail of their scientific name, family name and order name, 1. Wireworm injury to seed piece internodes facilitates.
Rice is one of the most important food crops in the world. Sitobion avenae, rhopalosiphum padi and various other species. Photographs and drawings of these and other storedproduct insects are contained in agricultural handbook 500 usdaars 1986. Sustainable management of rice insect pests by nonchemical. Image classification of paddy field insect pests using gradient. The world rice crop is attacked by more than 100 species of insects. Other ways to encourage natural pest enemies are to allow plants on the bunds and between fields to flower yellow and white flowers attract natural enemies. Contents 1 introduction 2 a list of rice pests 3 rice pests calendar 4 insect pests of major importance in the rice field 5 insect pests of minor importance in the field 6 miscellaneous pests of rice in the field 7 insect pests of rice in storage 8 control of insect pests of rice in storage 9 natural enemies of rice pests 10 control. Common insect pests of rice and their natural biological control. Rice grain losses caused by pest damage contribute to rural poverty and food insecurity in africa. In general, insect pests of rice are divided into two groups.
Besides, insects other invertebrates like nematodes, mites, snails, slugs, etc. Incidence and severity of rice diseases and insect pests in relation to climate change mainul haq1, m a taher mia2, m f rabbi1 and m a ali2 1entomology and 2plant pathology division bangladesh rice research institute, gazipur international symposium on climate change and food security in south asia 2530 august 2008 dhaka, bangladesh. Major insect pests of rice the insect pests that cause serious and economic damage are commonly known as major or important insect pests of rice and these major insect pests are given below with detail of their scientific name, family name and order name. Management of rice insect pests radcliffes ipm world. Stem borers scirpophaga incertulas gall midge orseolia oryzea brown plant hopper nilaparvata lugens whitebacked plant hoper sogatella furcifera green leaf hopper nephotettix virescens leaf folder cnaphalocrocis medinalis case worm nymphula depunctalis gundhi bug leptocorisa acuta mealy bug brevenia rehi swarming caterpiller spodoptera. Gianessi 1 international pesticide benefit case study 108 october, 2014 introduction rice is an essential crop for feeding the populations of south and south east asia. Biological control of rice insect pests in china sciencedirect.
Evaluation of different insecticides against major insect. Journal common insect pests of rice and their natural. Insectresistant genetically modified rice in china. An illustrated guide to the insect pests that feed on rice plants and the organisms that feed on and control those pests.
Insect pests of rice continued the fall armyworm is a sporadic pest of rice. Management spray endosulfan 35 ec ml ha or monocrotophos 36 wsc 500 ml ha 47. Fields under system rice intensification sri and integrated pest management ipm were also examined. Damage by insect pests is a serious challenge to rice production in china. Biological control is an effective method for pest control but not extensively adopted. Yield loss due to insect pests in rice in india is estimated to the tune of 25%. Among the insect pests, yellow stem borer ysb, scirpophaga incertulas walker is the most destructive pest of rice, causing yield losses to the tune of 1060 per cent every year panda et al. Recently, rice yield losses increased due to widespread. Historical records from korea and japan report on the history of rice insect pests during the last two millennia. Such paddy crops are affected by the attack of insect pests. Natural insect enemies of the rice pests are also killed when pesticides are applied and this can lead to an outbreak of other rice insect pests.
Insect pests of rice next three insect pests of rice introduction india has largest area of 44. Proceedings of a symposium at the international rice research institute, 1967. Establishing nextgeneration pest control services in rice fields. Incidence and severity of rice diseases and insect pests in. May 31, 2017 integrated management of insect pests of rice. Semantic scholar extracted view of insect pests of rice by pathak et al. Non insect pest tamil nadu agricultural university. A study was carried out on the major insect pest incidence on fine rice short cylinder most popular from private company in these. There are over 100 species of insect pests to rice around the world but only about 20 species can cause economic damage. The death of buds or young shoots leads to stand reduction whereas root feeding can stunt young plants. Most of the insect pests of rice in malaysia are kept at low populations by their natural enemies such as damselflies, dragonflies, spiders and mirid predators. Importance of pesticides for growing rice in south and south. Adults feed on rice leaves and lay their eggs underwater in rice stems.
Apart from apart from these crops it also feeds on sorghum, cotton, pennisetum typhoideum l. Many insect species are associated with stored grain and grain products, but only about 50 are injurious, either occasionally or frequently cotton 1956. No chemical pesticides were applied throughout the crop period to get a natural pest incidence on the crop. Way professor of entomology texas agrilife research beaumont center 1509 aggie drive beaumont, tx 777 rice water weevil lissorhoptrus oryzophilus the rice water weevil is a key pest of rice. The stink bug, oebalus pugnax, found in north america east of the rocky mountains and as far north as minnesota, is a pest of rice in the southern usa. Both the fields of high yielding and local cultivars were also assessed for the presence of natural enemies. Pages 343 in the major insect pests of the rice plant.
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