Academic literature on the topic 'Empoasca'
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Journal articles on the topic "Empoasca"
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LIU, YANG, DAO-ZHENG QIN, MURRAY J. FLETCHER, and YA-LIN ZHANG. "Review of Chinese Empoasca Walsh (Hemiptera: Cicadellidae), with description of seven new species and some new Chinese records." Zootaxa 3055, no. 1 (October 11, 2011): 1. http://dx.doi.org/10.11646/zootaxa.3055.1.1.
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Seven new species of Empoasca (Empoasca) Walsh, 1862 are described and illustrated. Five of the new species belong to the Empoasca warchalowskii group: Empoasca (Empoasca) longa Zhang & Liu, Empoasca (Empoasca) megalophylla Qin & Liu, Empoasca (Empoasca) paragucia Fletcher & Liu, Empoasca (Empoasca) undulata Zhang & Liu, Empoasca (Empoasca) vickiae Liu, spp. nov. The other two new species cannot be placed into a species group: Empoasca (Empoas- ca) dendritica Qin & Liu and Empoasca (Empoasca) polyprocessa Fletcher & Liu, spp. nov. An additional 15 species and the subgenus Empoasca (Livasca) Dworakowska & Viraktamath, 1978 are recorded for the first time from China.
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SOUTHERN, PHILLIP STERLING, and C. H. DIETRICH. "Eight new species of Empoasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from Peru and Bolivia." Zootaxa 2524, no. 1 (July 1, 2010): 1. http://dx.doi.org/10.11646/zootaxa.2524.1.1.
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Eight new species in the leafhopper genus Empoasca Walsh 1862 are described and illustrated (Empoasca acanthafera n. sp., Empoasca affinipeba n. sp., Empoasca apatapeba n. sp., Empoasca daggyi n. sp., Empoasca davidi n. sp., Empoasca nella n. sp., Empoasca peba n. sp., Empoasca pexa n. sp.). Relationships to previously described species are discussed. Solanasca Ghauri 1974 is treated as a junior synonym of Empoasca (new synonymy) and a revised generic diagnosis is provided.
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SOUTHERN, PHILLIP STERLING. "New species and color forms of Empoasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from South America." Zootaxa 1949, no. 1 (December 3, 2008): 51–62. http://dx.doi.org/10.11646/zootaxa.1949.1.4.
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Three new Neotropical species in the genus Empoasca are described and illustrated (Empoasca bartletti n. sp., Empoasca concava n. sp., Empoasca coofa n. sp.). The species are placed in a previously published key and relationships to other species of the genus are described. Two informal species groups, the E. dolonis group and the E. papae group are described and included species are listed. Evidence for the occurrence of dimorphic color forms in the genus is discussed.
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Fauziah, Fani, and Odih Sucherman. "Pengaruh Kombinasi Aplikasi Jamur Paecilomyces fumosoroseus, Lem Perangkap, dan Insektisida Imidakloprid terhadap Empoasca sp." Jurnal Agro 4, no. 1 (July 31, 2017): 32–39. http://dx.doi.org/10.15575/1229.
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In order to obtain an effective and efficient control method in integrated pest management, a research to know the effectiveness of combination treatments on Empoasca sp. on tea plant had been conducted. The trial was carried out at Gambung Experimental Station (1,250 masl) and designed in Randomized Complete Block design (RCB), with 8 treatments and 3 replications. The treatment tested comprised with A. Paecilomyces fumosoroseus (Pfr); B. sticky trap (ST); C. imidacloprid (I); D. Pfr + ST; E. Pfr + I; F. ST + I; G. Pfr + ST + I; and H. control. Pfr multiplied in rice medium 2.5 kg ha-1 and imidacloprid 0.125 L ha-1 were sprayed, while sticky trap was set in the middle of 5 m x 5 m plot. The parameters observed were attack intensity of Empoasca sp., population of Empoasca sp, and tea shoot production. The results showed that after 3 times application of all treatments revealed a decrease in the attack intensity of Empoasca sp. After the fourth application, combination treatment of sticky trap (ST) + imidacloprid (I) consistently showed higher efficacy than other treatments. In the sixth observation, the average of Empoasca sp. attack intensity of combination treatment (ST + I) was 15.95% with an average population of 0.67 Empoasca sp. per plot. In the meantime, tea shoot production was 33.64% higher compared with control.
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LIU, YANG, DAO-ZHENG QIN, MURRAY J. FLETCHER, and YA-LIN ZHANG. "Four new species of Empoasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) and one new record from China." Zootaxa 3070, no. 1 (October 27, 2011): 29. http://dx.doi.org/10.11646/zootaxa.3070.1.4.
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Four new species of Empoasca (Empoasca Walsh) are described from China: E. (E.) dahaopingensis Qin & Liu, E. (E.) gutianensis Zhang & Liu, E. (E.) lijiangensis Liu, and E. (E.) apibicruris Liu spp. nov. In addition, E. (E.) dymarka Dworakowska, 1984, is recorded from China for the first time. E. (E.) apibicruris, and E. (E.) dymarka are placed in the Empoasca albipennis group with E. (E.) albipennis Dworakowsa, 1977. Habitus photos and illustrations of the male genitalia of the new species are provided.
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Fauziah, Fani, Restu Wulansari, and Erdiansyah Rezamela. "Pengaruh Pemberian Pupuk Mikro Zn dan Cu serta Pupuk Tanah terhadap Perkembangan Empoasca sp. pada Areal Tanaman Teh." Agrikultura 29, no. 1 (April 6, 2018): 26. http://dx.doi.org/10.24198/agrikultura.v29i1.16923.
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ABSTRACTThe effect of Zn and Cu micro-fertilizer and soil fertilizer on the development of Empoasca sp. in tea plantation areaFertilization has an important role for the entire process of metabolism and improves plant health. Tea plants are plants that require macro and micro nutrient inputs. The micro elements of Zn and Cu are needed for energy production, protein synthesis, formation of auxin hormones and increament of plant resistance to pest attack. This study aimed to determine the effect of Zn and Cu micro fertilizer and soil fertilizer on the development of Empoasca sp. The study was conducted from January to July 2017 at Gambung Experimental Station with an altitude of 1350 asl. The experiment was designed with Randomized Block Design (RBD) Factorial pattern with the following treatment arrangement: Factor A = 1) Without Micro Fertilizer, 2) Micro Fertilizer of Zn and Cu 200 g/ha/application, and 3) Zn and Cu 300 g/ha/application; Factor B = 1) Soil fertilizer of 100% recommended dosage, 2) Soil fertilizer of 75% recommended dosage, and 3) Soil fertilizer of 50% recommended dosage. All treatmnets were repeated three times. Application of micro fertilizers was carried out after six times of tea-leaf picking, while soil fertilizer was applied once at the beginning of the experiment. Observation parameters were population and attack intensity of Empoasca sp., as well as shoot production (kg/25 m2 plot size). The results showed that the application of fertilizers had an effect on the decrease of attack intensity and the population of Empoasca sp. in all treatments. Average attack intensity and population of Empoasca sp. at the end of the observation did not differ significantly of 31.64% and 2.55 Empoasca sp. per plant. Meanwhile, the highest total production of 36.56 kg/plot was obtained from the application of micro fertilizer Zn and Cu in the dosage of 200 g/ha/application at all doses of soil fertilizer, but there was no interaction between treatment factors.Keywords: Micro fertilizer, Soil fertilizer, Empoasca sp., Tea plantABSTRAKPemupukan memegang peranan penting untuk seluruh proses metabolisme dan meningkatkan kesehatan tanaman. Tanaman teh merupakan tanaman yang memerlukan input unsur hara makro dan mikro. Unsur mikro Zn dan Cu diperlukan tanaman untuk produksi energi, sintesis protein, pembentukan hormon auksin serta meningkatkan resistensi terhadap serangan organisme pangganggu tanaman. Penelitian ini bertujuan untuk mengetahui dampak pemberian pupuk mikro Zn dan Cu serta pupuk tanah terhadap perkembangan Empoasca sp. Penelitian dilaksanakan dari bulan Januari hingga Juli 2017 di Kebun Percobaan Gambung dengan ketinggian 1.350 mdpl. Percobaan dirancang dengan Rancangan Acak Kelompok (RAK) pola Faktorial dengan susunan perlakuan sebagai berikut: Faktor A = 1) Tanpa Pupuk mikro, 2) Pupuk mikro Zn dan Cu 200 g/ha/aplikasi, dan 3) Pupuk mikro Zn dan Cu 300 g/ha/aplikasi; Faktor B = 1) Pupuk tanah 100% dosis anjuran, 2) Pupuk tanah 75% dosis anjuran, dan 3) Pupuk tanah 50% dosis anjuran. Perlakuan diulang sebanyak tiga kali ulangan. Aplikasi pupuk mikro dilaksanakan setelah pemetikan sebanyak enam kali, sedangkan pemberian pupuk tanah dilakukan satu kali diawal percobaan. Parameter pengamatan yaitu populasi, intensitas serangan Empoasca sp., dan produksi pucuk (kg/plot 25 m2). Hasil penelitian menunjukkan bahwa pemberian pupuk berpengaruh terhadap penurunan intensitas serangan dan populasi Empoasca sp. pada seluruh perlakuan. Rata-rata intensitas serangan dan populasi Empoasca sp. pada akhir pengamatan tidak berbeda nyata sebesar 31,64% dan 2,55 ekor per tanaman. Sementara itu, total produksi tertinggi diperoleh dari aplikasi pupuk mikro Zn dan Cu dosis 200 g/ha/aplikasi pada semua dosis pupuk tanah yaitu sebesar 36,56 kg/plot, namun tidak terjadi interaksi antar faktor perlakuan.Kata Kunci: Pupuk mikro, Pupuk tanah, Empoasca sp., Tanaman teh
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Fauziah, Fani. "ALTERNATIF PENGENDALIAN Empoasca sp. DENGAN INSEKTISIDA BUPROFEZIN PADA TANAMAN TEH." Creative Research Journal 4, no. 02 (January 21, 2019): 63. http://dx.doi.org/10.34147/crj.v4i02.169.
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Empoasca merupakan hama utama pada tanaman teh yang dapat menimbulkan kerusakan hingga 50%. Penelitian ini bertujuan untuk mengetahui alternatif pengendalian Empoasca dengan insektisida berbahan aktif Buprozein. Penelitian dilaksanakan di Kebun Percobaan Gambung, Kabupaten Bandung, selama ± 3 bulan, dari bulan Maret hingga Mei. Pengujian dirancang dalam Rancangan Acak Kelompok (RAK) dengan lima perlakuan dan lima ulangan. Perlakuan yang diuji meliputi insektisida Buprofezin 100 g/l dengan dosis 0,125; 0,25; 0,375; 0,5 l/ha, dan kontrol. Insektisida disemprotkan dengan menggunakan alat semprot punggung sehari setelah pemetikan, sebanyak 6 kali, dengan interval aplikasi 1 minggu. Parameter yang diamati meliputi intensitas serangan, populasi Empoasca sp., produksi pucuk, suhu dan curah hujan. Hasil pengujian menunjukkan bahwa insektisida Buprofezin 100 g/l pada semua dosis yang diuji berpengaruh terhadap intensitas dan populasi Empoasca sp. Hasil pengamatan menunjukkan bahwa dosis efektivitas tertinggi ditunjukkan oleh dosis formulasi 0,375; 0,5 l/ha dengan tingkat efektivitas lebih dari 70%.
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ZHANG, YA-LIN, YANG LIU, and DAO-ZHENG QIN. "Empoasca (Empoasca) paraparvipenis n. sp. and some new records of the subgenus from China (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini)." Zootaxa 1949, no. 1 (December 3, 2008): 63–68. http://dx.doi.org/10.11646/zootaxa.1949.1.5.
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Empoasca (Empoasca) paraparvipenis Zhang and Liu n. sp. is described and illustrated from Guizhou, Yunnan and Sichuan Provinces (SW. China), and three species of the nominate subgenus are reported for the first time from China. A species checklist of the subgenus is also provided.
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Kusumadewa, Christophorus Candra, and Supatman Supatman. "Identifikasi Citra Daun Teh Menggunakan Metode Histogram untuk Deteksi Dini Serangan Awal Hama Empoasca." JMAI (Jurnal Multimedia & Artificial Intelligence) 2, no. 1 (February 19, 2018): 27–36. http://dx.doi.org/10.26486/jmai.v2i1.71.
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Hama Empoasca adalah salah satu hama utama tanaman teh di Asia. Hama ini sulit dimonitor karena ukurannya kecil, lincah, mampu terbang dan meloncat. Pengamatan serangan hama ini agar lebih praktis dan mudah dengan cara mengatasinya. Gejala serangan ini dapat diakuisisi dan direpresentasikan dalam bentuk citra digital. Penelitian ini menyediakan sebuah algoritma yang dapat membantu membedakan daun teh muda atau pucuk daun teh yang sehat dan yang terkena gejala awal hama Empoasca.
Sampel pucuk daun teh Yang sehat ATAU terserang hama Empoasca diproses using image preprocessing Dan ektraksi Ciri DENGAN Metode histogram Serta identifikasi Berbasis Neural Network . Ciri yang digunakan pada penelitian ini adalah mean, standar deviasi, dan entropy sebagai masukan jaringan syaraf tiruan . Data Pelatihan Yang digunakan sebanyak 110 citra, terdiri Dari 43 citra data normal Dan 23 citra terkena gejala Awal hama Empoasca Serta Data Pengujian sebanyak 44 citra. Pengujian algoritma ini menghasilkan unjukkerja terbaik sebesar 95,45% pada alfa 0,1 dan decalfa 0,5.
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Yasin, Nur, Listianingsih Listianingsih, Lestari Wibowo, and F. X. Susilo. "KEPADATAN POPULASI PREDATOR, PESAING, DAN SIMBION KUTUDAUN PADA TANAMAN KACANG PANJANG PASCAAPLIKASI INSEKTISIDA." Jurnal Hama dan Penyakit Tumbuhan Tropika 4, no. 2 (September 16, 2004): 62–68. http://dx.doi.org/10.23960/j.hptt.2462-68.
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The population density of Aphis sp., their predators, competitors, and symbionts in longbean field treated with insecticide. This study was aimed to determine the effect of profenofos insecticide application on 1) the population density of Aphis sp., their predators (coccinellids and syrphids), competitor (Empoasca sp.) and symbionts (ants), and 2) the interactions between the aphid and the predator, the aphid and the symbiont, and the aphid and the competitor in the longbean field. The experiment was arranged in completely randomized design with three levels of profenofos treatments (P1= profenofos sprayed weekly, P2= profenofos sprayed biweekly, and K= unsprayed). Each treatment was replicated six times. Population density (insect number/longbean hill) was observed three times a week, totaling 16 observations during the growing season. The result showed that profenofos spray decreased the population density of Aphis sp. Profenofos treatment also suppressed coccinellid, syrphid, Empoasca sp., and ant population. However, the insecticide did not affect the correlation either between Aphis sp. and ant, between Aphis sp. and Empoasca sp., between ant and Empoasca sp., between ant and coccinellids/syrphids, or between Empoasca sp. and coccinellids/syrphids. It was clear from this study that profenofos strengthened the interaction between Aphis sp. and coccinellids. Aphis sp.—syrphid interaction was weekened by biweekly spray of profenofos, but was replenished by weekly spray of the insecticide.
Dissertations / Theses on the topic "Empoasca"
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Wylde, Alison M. "A comparison of resistance mechanisms in common beans, Phaseolus vulgaris, to Empoasca fabae and Empoasca kraemeri." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0030/MQ47378.pdf.
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Welker, Robert M. "White apple leafhopper affects apple fruit quality and leaf gas exchange." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06112009-063712/.
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Byrne, David N., and Erich A. Draeger. "Evaluation of Potato Leafhopper, Empoasca fabae L., Populations in Arizona Citrus." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/220559.
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The potato leafhopper, Empoasca fabae L., is a significant pest in the United States, and elsewhere, of alfalfa and potatoes In Arizona and in Coastal and Central California it can also be a pest of citrus. In 1994 and 1995 we collected information concerning their seasonal abundance in a large citrus orchard near Newman Peak Arizona. To do so we employed yellow sticky traps around the orchard periphery, at the same time using a D-Vac® vacuum sampler in the weeds growing in the interior of the orchard During both years peak populations occurred near mid April. This was correlated with a drop in relative humidity and a rise in ambient air temperature.
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Ranger, Christopher M. "The chemical mechanism for defense of glandular-haired alfalfa, Medicago sativa L., against the potato leafhopper, Empoasca fabae (Harris) /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3137739.
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Silva, Valeria. "DistribuiÃÃo espacial e vertical da cigarrinha Empoasca kraemeri Ross e Moore (HEMIPTERA: CICADELIDAE) no feijÃo de corda." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8437.
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Objetivou-se com este trabalho estudar a dispersÃo espacial e vertical da cigarrinha Empoasca kraemeri Ross e Moore (Hemiptera: Cicadelidae), na cultura de feijÃo de corda [Vigna unguiculata (L.) Walp.], estabelecer o nÃmero de amostras necessÃrias para a estimativa da populaÃÃo da praga para o uso em programas de Manejo Integrado de Pragas e determinar a unidade amostral. Para isso foram cultivados dois campos experimentais no Campus do Pici em Fortaleza, CearÃ. O primeiro campo tinha uma Ãrea de 216 mÂ, composta de 15 parcelas. O segundo campo tinha uma Ãrea de 576 m dividida em 25 parcelas. A cultivar utilizada foi a Vita 7 com plantas espaÃadas em 0,25 m x 0,8 m. Foram realizadas trÃs coletas de dados no Campo I e quatro no Campo II onde foram avaliadas dez plantas por parcelas. Foi contado o nÃmero de adultos e ninfas de cigarrinha presentes em toda a planta. Para avaliaÃÃo da distribuiÃÃo vertical foi realizada uma avaliaÃÃo no Campo II com vinte e cinco plantas, contando-se o nÃmero de adultos e ninfas de cigarrinha nas dez primeiras folhas a partir do Ãpice e em seus trÃs folÃolos. Os resultados obtidos nos Ãndices de agregaÃÃo utilizados indicam que a dispersÃo do E. kraemeri no campo à do tipo agregada o que foi confirmado pelo ajuste dos dados à distribuiÃÃo de frequÃncia Binomial Negativa. Trinta à o nÃmero de amostras adequado para a estimativa da populaÃÃo de E. kraemeri em campos de V. unguiculata para aplicaÃÃo em programas de Manejo Integrado de Pragas. As folhas ideias para amostragem de E. kraemeri sÃo 3, 4, 5 e 6. O folÃolo central apresenta o maior nÃmero de insetos.The objectives of this work were to study the spatial and vertical dispersion of the leafhopper Empoasca kraemeri Ross and Moore (Hemiptera: Cicadelidae), in cowpea crop [Vigna unguiculata (L.) Walp.], establish the number of samples needed to estimate the population of the pest to use in programs of Integrated Pest Management and determine the sample unit. To this task two experimental fields were cultivated in the Pici Campus in Fortaleza, CearÃ. The first field had an area of 216 mÂ, composed of 15 plots. The second field had an area of 576 m divided into 25 plots. The cultivar used was Vita 7 with plants spaced 0.25 m x 0.8 m. We performed three separate collections of data in Field I and four in Field II on ten plants in each plot. It was counted the number of spittlebug nymphs and adults present throughout the plant. To evaluate the vertical distribution assessment was carried out at Field II on twenty-five plants, counting the number of leafhopper nymphs and adults in the first ten leaves from top to botton in its three leaflets. The results according to the aggregation indexes showed that E. kraemeri dispersion in the field follow an aggregate pattern, that was confirmed by a negative binomial frequency distribution. Thirty is the adequate number of sample unit to estimate E. kraemeri on V. unguiculata fields to be used in Integrated Pest Management programs. The ideal sites to sample E. kraemeri are 3, 4, 5 and 6 leaves. The central leaflet presents the highest number of insects.
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Silva, Valeria. "Distribuição espacial e vertical da cigarrinha Empoasca kraemeri Ross e Moore (HEMIPTERA: CICADELIDAE) no feijão de corda." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/8613.
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SILVA, V. Distribuição espacial e vertical da cigarrinha Empoasca kraemeri Ross e Moore (HEMIPTERA: CICADELIDAE) no feijão de corda. 2012. 56 f. Dissertação (Mestrado em Agronomia/Fitotecnia) - Centro de Ciências Agrárias, Universidade Federal do Ceará, Fortaleza, 2012.Submitted by Francisco Lacerda (lacerda@ufc.br) on 2014-08-04T23:11:23Z No. of bitstreams: 1 2012_dis_vsilva.pdf: 1309882 bytes, checksum: d016a24b7e4bee6622b3d9456ead4604 (MD5)
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The objectives of this work were to study the spatial and vertical dispersion of the leafhopper Empoasca kraemeri Ross and Moore (Hemiptera: Cicadelidae), in cowpea crop [Vigna unguiculata (L.) Walp.], establish the number of samples needed to estimate the population of the pest to use in programs of Integrated Pest Management and determine the sample unit. To this task two experimental fields were cultivated in the Pici Campus in Fortaleza, Ceará. The first field had an area of 216 m², composed of 15 plots. The second field had an area of 576 m² divided into 25 plots. The cultivar used was Vita 7 with plants spaced 0.25 m x 0.8 m. We performed three separate collections of data in Field I and four in Field II on ten plants in each plot. It was counted the number of spittlebug nymphs and adults present throughout the plant. To evaluate the vertical distribution assessment was carried out at Field II on twenty-five plants, counting the number of leafhopper nymphs and adults in the first ten leaves from top to botton in its three leaflets. The results according to the aggregation indexes showed that E. kraemeri dispersion in the field follow an aggregate pattern, that was confirmed by a negative binomial frequency distribution. Thirty is the adequate number of sample unit to estimate E. kraemeri on V. unguiculata fields to be used in Integrated Pest Management programs. The ideal sites to sample E. kraemeri are 3, 4, 5 and 6 leaves. The central leaflet presents the highest number of insects.
Objetivou-se com este trabalho estudar a dispersão espacial e vertical da cigarrinha Empoasca kraemeri Ross e Moore (Hemiptera: Cicadelidae), na cultura de feijão de corda [Vigna unguiculata (L.) Walp.], estabelecer o número de amostras necessárias para a estimativa da população da praga para o uso em programas de Manejo Integrado de Pragas e determinar a unidade amostral. Para isso foram cultivados dois campos experimentais no Campus do Pici em Fortaleza, Ceará. O primeiro campo tinha uma área de 216 m², composta de 15 parcelas. O segundo campo tinha uma área de 576 m² dividida em 25 parcelas. A cultivar utilizada foi a Vita 7 com plantas espaçadas em 0,25 m x 0,8 m. Foram realizadas três coletas de dados no Campo I e quatro no Campo II onde foram avaliadas dez plantas por parcelas. Foi contado o número de adultos e ninfas de cigarrinha presentes em toda a planta. Para avaliação da distribuição vertical foi realizada uma avaliação no Campo II com vinte e cinco plantas, contando-se o número de adultos e ninfas de cigarrinha nas dez primeiras folhas a partir do ápice e em seus três folíolos. Os resultados obtidos nos índices de agregação utilizados indicam que a dispersão do E. kraemeri no campo é do tipo agregada o que foi confirmado pelo ajuste dos dados à distribuição de frequência Binomial Negativa. Trinta é o número de amostras adequado para a estimativa da população de E. kraemeri em campos de V. unguiculata para aplicação em programas de Manejo Integrado de Pragas. As folhas ideias para amostragem de E. kraemeri são 3, 4, 5 e 6. O folíolo central apresenta o maior número de insetos.
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Decante, Damien. "Répartition spatio-temporelle et migration de la cicadelle verte (Empoasca vitis Goethe) dans un agro-écosystème viticole." Bordeaux 2, 2007. http://www.theses.fr/2007BOR21405.
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L'éco-éthologie de Empoasca vitis a été étudiée dans le vignoble à différentes échelles temporelles (semaine, génération, année) et spatiales (parcelle, ilôt de production, appellation). Elle hiverne dans les abords des parcelles sur des plantes à feuillage persistant et migre vers des plantes hôtes intermédiaires (complémentation), avant de coloniser les parcelles au printemps. Le niveau des populations estivales (potentiellement nuisibles) est influencé par des migrations estivales de longue distance. Les répartitions intra-parcellaires des adultes et larves, cartographiées et comparées avec les caractéristiques agronomiques des parcelles, révèlent de fortes agrégations dans les zones vigoureuses. La présence de plantes-hôtes alternatives de E. Vitis aux abords des parcelles (supplémentation) ne semble pas augmenter les populations. L'effet régulateur des auxiliaires en provenance des abords n'a pas été démontré. Une végétation haute et dense induit l'accumulation des adultes migrantsThe eco-ethology of Empoasca vitis was studied in vineyards at different temporal (week, generation, year) and spatial (plot, production site, small region) scales. This leafhopper hibernates near the plot on evergreen plants and, in spring, migrates towards different early-budding plants before ilmmigrating into the plots (complementation). Summer population levels (sometimes harmful) depend strongly on summer migrations taking place over longer distances. The intra-plot distribution of both adults and nymphs was mapped and compared to agronomical parameters. This revealed strong aggregations in areas of high plant vigour. The presence of potential alternative host plants of E. Vitis along the plot border (supplementation) did not seem to increase population levels. No impact of natural enemies from plot borders was detected. High and dense plot borders were shown to induce accumulation of migrating adults
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Kusmiyati, Florentina. "Pubescence in red clover : its inheritance and its relationship to potato leafhopper resistance." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22750.
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Potato leafhopper causes considerable damage in red clover. The main objectives of this study were to clarify the inheritance of pubescence and to evaluate the relationship between pubescence and potato leafhopper (Empoasca fabae (Harris) resistance. Thirteen red clover clones of diverse origin, including both pubescent and non-pubescent types were used as parents. A series of crosses were made in all possible combinations among the 13 parental clones. Seedlings of F$ sb1$ progeny and stem cuttings from parents were planted in the field in the summer of 1993 in a randomized complete block design. Based on the results, the inheritance of pubescence type on red clover stems, petioles and abaxial leaf surfaces was best explained individually by two-locus models showing dominant and recessive interaction. A two locus model with recessive epistasis was proposed for pubescence on stipules and basal internodes, but there were a number of crosses that deviated from expected ratios. There was quantitative variation for trichome density on red clover and it appeared to be inherited as a quantitative trait. Based on mid-parent offspring regression, the heritability estimates of trichome density on petioles, stems, abaxial leaf surfaces, and adaxial leaf surfaces were 0.16, 0.77, 0.50 and 0.48, respectively. Pubescence was apparently associated with potato leafhopper resistance. Visual ratings of feeding injury, the numbers of leafhopper nymphs per plant and the numbers of nymphs per gram of dry plant material were higher on glabrous plants than on pubescent plants. (Abstract shortened by UMI.)
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Habibi, Javad. "Subcellular effects and localization of binding sites of Phytohemagglutinin in the potato leafhopper, Empoasca fabae (Harris) (Homoptera: Cicadellidae) /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9737894.
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Moura, Marcelo Fialho de. "Danos, sistema de tomada de decisão de controle e distribuição espacial de Empoasca kraemeri na cultura do feijoeiro." Universidade Federal de Viçosa, 2005. http://www.locus.ufv.br/handle/123456789/10066.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico
A cigarrinha verde Empoasca kraemeri (Ross & Moore) (Hemiptera: Cicadellidae) é considerada a praga - chave da cultura do feijoeiro Phaseolus vulgaris no Brasil, não existindo sistema de tomada de decisão para o seu controle. Assim, os objetivos dessa pesquisa foram: avaliar os efeitos de incidência de seus adultos sobre o desenvolvimento e produtividade do feijoeiro, descrever sua variabilidade espacial, determinar a técnica amostral mais precisa e representativa, estabelecer níveis de dano econômico e planos de amostragem a comporem o sistema de tomada de decisão. O ataque de E. kraemeri ao feijoeiro reduziu a taxa de produção de matéria seca, reduziu a área foliar das plantas, aumentou o número e diminuiu o tamanho das folhas, reduziu a produção de biomassa e elevou o peso da matéria seca das folhas em relação ao peso da matéria seca total, resultando em menor produtividade (g/planta), menor número de grãos por planta e grãos mais leves. As melhores folhas para amostrar E. kraemeri por contagem direta, foram a 4a e 5a folha a partir do ápice das plantas para adultos e a 5a folha para ninfas. A batida de duas plantas em bandeja foi a técnica amostral mais precisa e representativa para se amostrar adultos e ninfas, sendo necessárias 63 amostras/talhão para amostragem convencional de adultos e 118 amostras/talhão para amostragem convencional de ninfas. Os níveis de dano econômico para adultos foram: 0,48, 0,39 e 0,35 adultos por bandeja, para produtividade esperada de 1200, 1800 e 2400 Kg/ha de feijão. Os planos de amostragem seqüencial estabelecidos apresentam 90% de probabilidade de indicar uma decisão correta, possibilitando uma economia de cerca de 57% do tempo e custo de amostragem em relação ao plano convencional. Em densidades inferiores ao nível de dano econômico, a população de E. kraemeri apresentou distribuição espacial ao acaso. Já em densidades maiores do que o nível de dano econômico, sua população apresentou distribuição agregada. A dependência espacial entre amostras foi de 4,5 m no plantio da seca, e 3,5 m no plantio de inverno e os mapas de densidade populacional mostraram que existe uma tendência da densidade populacional de E. kraemeri aumentar com o tempo de cultivo e das áreas periféricas para as áreas centrais.
The Leafhopper Empoasca kraemeri (Ross & Moore) (Auchenorrhyncha: Cicadellidae) is considered one of the most damaging insect on bean crop Phaseolus vulgaris in Brazil, not existing a control decision-making system for its control. Thus, the objectives of this research was: to evaluate the effect of incidence of its adults on the development and productivity of the bean plants, to describe its spatial variability, to determine the more accurate and representative sampling technique for E. kraemeri and to establish levels of economic damage and plans of sampling to compose the control decision-making system. The attack of E. kraemeri to the bean plants reduced the production of dry matter, reduced the foliar area of the plants, increased the number and reduced the size of the leaves. Furthermore, the attack reduced the biomass production and raised the weight of the dry matter of leaves compared to the weight of the total dry matter, resulting in lesser productivity (g/plant), low number of grains in each plant and lighter grains. The best leaves to sample for direct counting of E. kraemeri are the 4th and 5th leaf starting from the apex of the plants for adults and 5th leaf for nymphs. The more accurate and representative sampling technique for adults and nymphs was the beating tray method, being necessary 63 samples/plot for conventional sampling of adults and 118 samples/plot for conventional sampling of nymphs of E. kraemeri. The levels of economic damage for adults were: 0,48, 0,39 and 0,35 adults per tray, for the productivity of 1200, 1800 and 2400 kg/ha of beans. The established plans of sequential sampling presented 90% of probability to indicate a correct decision, making possible an economy of about 57% of the time and cost of sampling in relation to the conventional plan. In lower densities than the level of economic damage, the population of E. kraemeri had randomized spatial distribution in the bean crop. However, in bigger densities than the level of economic damage, the population had aggregate spatial distribution. The spatial dependence between samples was 4,5m in the plantation of dry season, and 3,5m in the plantation of winter, and the maps of population density had shown that there is a tendency of the population density of E. kraemeri to increase with the time of cultivation and from the peripheral areas to the central areas.
Books on the topic "Empoasca"
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Flanders, Kathy L. Host plant resistance in Solanum germplasm: An appraisal of resistance to Colorado potato beetle, Potato leafhopper and Potato flea beetle. St.Paul,Minn: Minnesota Agricultural Experiment Station, University of Minnesota, 1992.
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Flanders, Kathy Linn. Host plant resistance in Solanum germplasm: An appraisal of resistance to Colorado potato beetle, potato leafhopper and potato flea beetle. St. Paul, Minn: Minnesota Agricultural Experiment Station, University of Minnesota, 1992.
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DeLong, Dwight Moore. Revision of the American Species of Empoasca Known to Occur North of Mexico. HardPress, 2020.
Find full textBook chapters on the topic "Empoasca"
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Frank, J. Howard, J. Howard Frank, Michael C. Thomas, Allan A. Yousten, F. William Howard, Robin M. Giblin-davis, John B. Heppner, et al. "Potato Leafhopper, Empoasca fabae (Harris) (Hemiptera: Cicadellidae." In Encyclopedia of Entomology, 3011. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_3093.
Full textConference papers on the topic "Empoasca"
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Chen, Jing, Qibing Zhu, Min Huang, and Ya Guo. "<i>Research on recognition of Empoasca flavescens based on machine vision</i>." In 2017 Spokane, Washington July 16 - July 19, 2017. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2017. http://dx.doi.org/10.13031/aim.201700460.
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