Varietal preference and management of bean aphid, aphis. Thrower department of botany, university of hong kong, hong kong accepted june 1980 summary in a greenhouse experiment, adult apterae of aphis craccivora were. The production is, however, greatly hampered by severe infestation and damage by insect pests including the cowpea aphid, aphis craccivora koch. The objective of this study was to determine the effect of effluent water on cowpea aphid reproduction and population growth. Abundance of coccinellid predators in some varieties of cowpea, vigna unguiculata l. Aphis craccivora is the most important insect pest of cowpea and also causes significant yield losses in other legume crops including alfalfa, beans, chickpea, lentils, lupins and peanuts. Behavioural response of alate aphis craccivora koch homoptera. Field strain of cowpea aphid, aphis craccivora koch, was treated by selected neonicotinoid insecticides to evaluate their toxicity and persistence against this pest in assiut governorate, egypt.
Morphometric discrimination of black legume aphid, aphis craccivora koch hemiptera. Bhagalpur university, bhagalpur812 007, bihar abstract. A field experiment was performed at elmenofeyia governorate, egypt. Walpers, is a major dietary staple in tropical africa where it is most often cultivated. Cowpea, vigna unguiculata, is an important food crop in many tropical regions. Varietal preference and management of bean aphid, aphis craccivora koch 2rafsia jahan 1, mohammad mahir uddin, md.
Relative efficacy of selected insecticides on cowpea aphid, aphis craccivora koch. Publishing and conversion into digital format made possible by funding from usda western sare people project, utah. Aphis craccivora koch is one of the key pests of cowpea karungi et al. Rae a 58 646 was examined in new south wales in 1969 in five pastures sown with different combinations of leguminous plants. Electrical penetration graph monitored feeding behavior of. Aphis craccivora a polyphagous aphid species with a preference for fabaceae. The ecology of aphis craccivora koch and subterranean clover. Observations on aphis craccivora koch at serere, uganda, in 196468 showed that dry season carryover of aphids could occur on the common weeds euphorbia hirta and e. Schum against the cowpea aphid, aphis craccivora koch was investigated.
Aphis craccivora koch basf colony on alfalfa aphis craccivora koch basf colony and damage on bean to read this page in french. Farnesene ebf from aphis craccivora koch, gujarat, india was conducted. Evaluation and utilization of cowpea vigna unguiculata l. Pdf relative efficacy of selected insecticides on cowpea.
The ecology of aphis craccivora koch and subterranean clover stunt virus. Control of the cowpea aphid, aphis craccivora koch. The behaviour, development and reproductive capacity of aphis craccivora, vector of a number of groundnut viruses, are compared on a range of susceptible and resistant genotypes. Control of the cowpea aphid, aphis craccivora koch homoptera.
They are herbivorous insects that can affect plants directly or indirectly by feeding on the plants sap. Cowpea aphid aphis craccivora koch ilse schreiner, ph. Aphis craccivora koch is polyphagous by nature affecting more than 15 different crops, mainly involving to the family leguminosae gomez souza et al. Pdf first record of aphis craccivora koch hemiptera. Chemical, cultural, physical and biological methods, and use of plant. Grafttransmissibility of resistance to cowpea aphid, aphis craccivora koch hemiptera. Both nymphs and adults suck plant sap and cause serious damage right from the seedling to pod bearing stage. Host odour preference of 405 olfactory response of cowpea. The ecology of aphis craccivora koch and subterranean. Comparative efficacy of some botanical, microbial and synthetic insecticides were evaluated against aphid, aphis craccivora koch, on mung bean at instructional farm, uttar banga krishi viswavidyalaya, pundibari, west bengal during the year 2012. Feeding behavior of cowpea aphid, aphis craccivora koch. Allelochemicals and physical barriers such as wax of leaf surfaces, trichomes, cell wall thickness and lignifications of host.
Biologi dan perkembangan populasi aphis craccivora koch. Aphis dewasa aphis dewasa dapat menghasilkan 2 20 anak setiap hari dan bila keadaan baik daur hidup aphis mencapai 2 minggu, pracaya, 1998. Eggs develop within the mother and nymphs are born live. It can cause direct damage and also indirect effect as vector of. Aphis craccivora cowpea aphid identification, images. Breeding groundnut for resistance to rosette disease and its aphid vector, aphis craccivora koch in malawi by justus m. However, in the olfactometer assays, the aphids showed a. In general, this pest causes severe damage to beans in warm weather, especially in mediumrainfall areas of the region. New sources of aphids aphis craccivora koch resistance in cowpea germplasm using phenotypic and molecular marker approaches. Aphis craccivora is a major pest of leguminous plants, including cowpea, vigna.
Therefore, the present study on the presence of semiochemicals e. Pdf establishment of baseline toxicity data to different. The following is based largely on the authors summary. Population dynamics of aphis gossypii glover and aphis. Pdf the aphid aphis craccivora was recorded on the crop of aronia, aronia melanocarpa, in montenegro, in june 2015 and 2016. Pdf screening for resistance to cowpea aphids aphis. The insecticidal activity of acetone extracts ofcymbopogon citratus dc stapf. The mortality of cowpea aphid aphis craccivora, due to the treatment of chemicals ranged from 50 to 98%. The ecology of aphis craccivora koch and subterranean clover stunt virus in southeast australia. The cowpea aphid, aphis craccivora, koch is a key pest of the crop.
The ecology of aphis craccivora koch and subterraneanclover stunt virus cf. Fabaceae, cultivars, including the resistant cultivar gazira2, by using the electrical penetration graph epg technique. Originally of probable palearctic origin, it is now an invasive species of cosmopolitan distribution. Screening for resistance to cowpea aphids aphis craccivora koch in wild and cultivated cowpea vigna unguiculata l. Aphididae, populations associated with different host plants.
Inheritance study of aphid aphis craccivora koch and. Insecticidal effect of some plant extracts on the cowpea. Behavioural response of alate aphis craccivora koch. Aphididae to volatiles from different cowpea cultivars. At 3 days after the first spray, highest aphid mortalities were recorded in case. A model of cowpea aphid populations in temperate pastures. Aphididae are an important group of insects with worldwide distribution 8. Aphis craccivora, variously known as the cowpea aphid, groundnut aphid or black legume aphid, is a true bug in the family aphididae. Aphididae moraes and ramalho 1980 are serious crop pests in brazil. Also, it was given that the host plant species reported in different regions of turkey of abovementioned aphids, so far. Studies on the ecology of aphis craccivora koch hem. These insects directly damage the plants by sucking the phloem, and indirectly by virus transmission and excretion of excess carbohydrates from their diet of. Investigation of cowpea and yardlong bean for resistance. Aphididae, was evaluated on five faba bean, vicia faba l.
Supervised by tri asmira damayanti and sugeng santoso. The outbreak of aphis craccivora koch in indian agricultural fields necessitates the study on the development of biorational alternatives to control of aphis craccivora koch. Aphis craccivora, crop pest, entomopathogenic fungi, median lethal concentration introduction cowpea aphid, aphis craccivora koch is a threat to cowpea growers in all over the country. Genetic structure of the aphis craccivora hemiptera. Most aphid species comprise a set of closely related populations which may have diverged genetically so that. Cowpea aphid, aphis craccivora koch, a serious insect pest in legume agriculture, is reported on all continents except the antarctic pettersson et. The phenology of aphid populations and the epidemiology of virus in pastures in southeast australia. This was randomized completely block design pot experiment conducted under net shade environment. The study was conducted in two successive seasons 20112012 and 201220. Field evaluation of new insecticide molecules for the management of cowpea aphid and flea beetle was carried out in students farm, college of agriculture, pjtsau, rajendranagar, hyderabad during 20142015.
The population density of the cowpea aphid, aphis craccivora koch. Aphididae journal of food health and bioenvironmental science, 11 1. Aphis craccivora koch is a major pest of groundnut arachis hypogaea l. Aphis hidup secara bergerombol pada daun dan tunas muda. Pdf field efficacy of selected insecticides against. Aphis craccivora koch is one of the most important pests of legumes, and rhopalosiphum maidis fitch, is a serious pest of gramineous crops. Highest aphid densities were developed in the susceptible varieties. Soil microbial degradation of neonicotinoid insecticides. The aphid feeds by sucking fluid from the stem terminal shoots, petioles, flowers and pods.
Soil microbial degradation of neonicotinoid insecticides imidacloprid, acetamiprid, thiacloprid and imidaclothiz and its effect on the persistence of bioefficacy against horsebean aphid aphis craccivora koch after soil application. Home about us subjects contacts advanced search help. It is the vector of at least seven viruses which attack groundnut. Olfactory response of cowpea aphid, aphis craccivora koch, to host. Funded by the united states department of agriculture cooperative state research, education and extension service grant 99388267854. Cowpea aphid, black legume aphid, groundnut aphid distribution. Pdf new sources of aphids aphis craccivora koch resistance in.
Within a few days, nymphs mature into reproductive adults and. Agriculture in botswana is hampered by limitation in water resources. Germplasm for varietal improvement of resistance to cowpea aphid aphis craccivora koch. Systematics and nymphal characteristics of black bean. Grafttransmissibility of resistance to cowpea aphid. Agriculture crop science bunda college university of malawi.
Species scientific name, pests common names, glossary, crops. Aphididae pada tanaman kacang panjang yigia sillensis l. Under faba bean field conditions, acetamiprid, imidacloprid, thiamethoxam and dinotefuran registered significantly high percent reduction of the pest at one, seven, fifteen and 21. Aphididae, in six highly antibiotic cowpea varieties volume 79 issue 3 a. The three tested cultivars showed different susceptibility to aphids. The damage and bionomics of the aphid are briefly introduced. The main species of aphids attacking beans are aphis fabae scopoli and aphis craccivora koch. Young and adult cowpea aphids aphis craccivora koch homoptera. Aphididae, international journal of life sciences biotechnology and pharma research, vol. Mamta trivedi and rajendra singh, systematics and nymphal characteristics of black bean aphid, aphis craccivora koch homoptera. Field trials demonstrated no significant difference between genotypes in the rate of arrival of alates, but population development was slower, and subsequent population decline faster, on the genotype ec 36892 icg. Host odour preference of aphis craccivora journal of biopesticides 31 special issue 405 407 2010 405 olfactory response of cowpea aphid, aphis craccivora koch, to host odours and population of conspecifics j. Experiments were conducted on whole plants wp and detached leaves dl. The cowpea aphid, aphis craccivora koch aphididae, is considered to be one of the major pests in the semiarid pampas of argentina and in other alfalfa.
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