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Made available in DSpace on 2022-05-01T00:16:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-29 The common black field cricket, Gryllus assimilis (Orthoptera: Gryllidae), damages young plants of red cedar, Juniperus virginiana (Cupressaceae); strawberry, Fragaria × ananassa (Rosaceae); sugarcane, Saccharum officinarum (Poaceae); teak, Tectona grandis (Lamiaceae); upland cotton, Gossypium hirsutum (Malvaceae); and, mainly, Eucalyptus spp. (Myrtaceae). The objective of this study was to investigate the biological and behavioral parameters of this insect in the laboratory and in Eucalyptus spp. plantations in Inhambupe, Bahia State, Brazil. The incubation period and the viability of G. assimilis eggs were 11.87 days and approximately 22%, respectively. The duration of the nymphal stage was 62.34 days with approximately 60% of the nymphs obtained in the laboratory being females. The average number of egg batches per female, eggs per female, and eggs per batch per female of this insect were 25.50, 862.17, and 34.65, respectively. G. assimilis females lived for 76.50 days in the adult stage, and 138.34 days in total, from egg through nymph to adult. Males produced three characteristic sounds: one for the marking of territory, one for courtship, and one when alone. G. assimilis fed primarily on weeds but, in their absence, it damaged young Eucalyptus spp. plants. This paper presents important data on the biology and behavior of G. assimilis; this information may encourage additional biological research, laboratory rearing, and integrated management of this pest. Bracell Ltd., rua Dr. José Tiago Correa, s/n°, bairro Alagoinhas Velha Asia Pacific Resources International Holdings Ltd. (APRIL) PT. Riau Andalan Pulp and Paper (RAPP) Departamento de Ciências Ambientais Universidade Federal de São Carlos Embrapa Florestas Departamento de Proteção Vegetal Universidade Estadual Paulista “Júlio de Mesquita Filho” Departamento de Entomologia/BIOAGRO Universidade Federal de Viçosa Departamento de Proteção Vegetal Universidade Estadual Paulista “Júlio de Mesquita Filho”

Made available in DSpace on 2018-11-26T17:40:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-09-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Blue gum chalcid, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae), causes galling damage to Eucalyptus species (Myrtaceae) in various regions of the world, but has been controlled effectively by its primary parasitoid, Selitrichodes neseri Kelly & La Salle (Hymenoptera: Eulophidae). The objectives of this study were to evaluate the recovery of S. neseri after its initial release on Eucalyptus plants in Brazil and to provide data on its biology. Selitrichodes neseri was imported from South Africa to Brazil for the biological control of L. invasa, in Mar 2015, and recovered from Aug 2015 to Dec 2016. Successful recovery of this parasitoid shows its potential to become established in the field. Seedlings of 2 hybrids obtained from crosses between rose gum Eucalyptus grandis W. Hill. ex Maiden and flooded gum Eucalyptus urophylla S. T. Blake and between Eucalyptus sp. and (river red gum Eucalyptus camaldulensis Dehnh. x E. grandis) showed potential as hosts for culture of S. neseri on L. invasa in the laboratory because up until the adult parasitoid emergence these seedlings did not wilt. When reared at 25.1 to 26.0 degrees C, the total number of parasitoids and the proportion of male parasitoids were highest, relative to hosts reared at 26.1 to 27.0 degrees C. Peak emergence of S. neseri occurred 28 d after parasitism. Bahia Specialty Cellulose Copener Florestal Ltda, Rua Dr Jose Tiago Correa S-N, BR-48030480 Alagoinhas, BA, Brazil Univ Estadual Paulista, Dept Protecao Vegetal, BR-18603970 Botucatu, SP, Brazil Univ Fed Sao Carlos, Dept Ciencias Ambientais, BR-18052780 Sorocaba, SP, Brazil Empresa Brasileira Pesquisa Agr, Ctr Nacl Pesquisa Florestas, BR-83411000 Colombo, Parana, Brazil Univ Fed Vicosa, BIOAGRO, Dept Entomol, BR-36570900 Vicosa, MG, Brazil Univ Estadual Paulista, Dept Protecao Vegetal, BR-18603970 Botucatu, SP, Brazil

Eucalyptus (Eucalyptus spp.) naturally occurs in Australia, Indonesia and neighboring islands such as Flores, Alor and Wetar. The genus Eucalyptus belongs to the Myrtaceae family, with around 600 species and sub-species, and shows high plasticity and worldwide dispersion, growing satisfactorily under different edaphoclimatic conditions and surpassing those of the regions of origin. Less than 1 % of these 600 species have been used for industrial purposes. In essence, the use of eucalyptus in the worldwide industry is based on two species, mainly: E. globulus, E. grandis and their hybrids with E. urophylla, and hybrids between E. saligna and E. camaldulensis, planted in large scale in Brazil. These Eucalyptus trees are used for the production of paper, cellulose, wood, coal, cluster, sawmill, furniture, oils for pharmaceutical industries, honey, windbreak, and in civil construction and ornamentation.

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:49:38Z No. of bitstreams: 1 S0100-54052011000200004.pdf: 237441 bytes, checksum: 9624f357461544aa16632908ff89a939 (MD5) Made available in DSpace on 2013-08-22T18:49:38Z (GMT). No. of bitstreams: 1 S0100-54052011000200004.pdf: 237441 bytes, checksum: 9624f357461544aa16632908ff89a939 (MD5) Previous issue date: 2011-06-01 Made available in DSpace on 2013-09-30T17:48:18Z (GMT). No. of bitstreams: 2 S0100-54052011000200004.pdf: 237441 bytes, checksum: 9624f357461544aa16632908ff89a939 (MD5) S0100-54052011000200004.pdf.txt: 33540 bytes, checksum: 1c0ac7d2202d20d45399b00fa103b9dd (MD5) Previous issue date: 2011-06-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:21:22Z No. of bitstreams: 2 S0100-54052011000200004.pdf: 237441 bytes, checksum: 9624f357461544aa16632908ff89a939 (MD5) S0100-54052011000200004.pdf.txt: 33540 bytes, checksum: 1c0ac7d2202d20d45399b00fa103b9dd (MD5) Made available in DSpace on 2014-05-20T13:21:22Z (GMT). No. of bitstreams: 2 S0100-54052011000200004.pdf: 237441 bytes, checksum: 9624f357461544aa16632908ff89a939 (MD5) S0100-54052011000200004.pdf.txt: 33540 bytes, checksum: 1c0ac7d2202d20d45399b00fa103b9dd (MD5) Previous issue date: 2011-06-01 Originária da América do Sul, a ferrugem do eucalipto causada pelo fungo Puccinia psidii, vem se tornando uma doença limitante para a cultura do eucalipto no Brasil, exigindo a adoção de estratégias de controle, dentre as quais está o controle químico. Para avaliar eficiência e viabilidade econômica de fungicidas no controle da ferrugem do eucalipto, montou-se um ensaio a campo. Para a instalação do ensaio, utilizou-se o delineamento em blocos ao acaso, em esquema fatorial 3 x 3 (3 produtos e 3 doses), sendo 0,5, 1,0 e 1,5 mL ou g do produto comercial por litro de solução. Os tratamentos foram: 1-) Testemunha; 2-) Fungicida azoxistrobina (estrobilurina); 3-) Fungicida tebuconazol (triazol); 4-) Fungicida tebuconazol + trifloxistrobina (triazol + estrobilurina). O experimento constou de quatro repetições, com avaliação da severidade das plantas. As avaliações foram efetuadas com base no percentual de área foliar lesionada. Verificou-se que com o aumento na dosagem dos fungicidas, houve maior redução da doença nas plantas aos 7 e 15 dias pós-aplicação. O fungicida tebuconazol + trifloxistrobina a 1,5 mL/L foi o mais eficiente contra a ferrugem do eucalipto em condições de campo. O fungicida tebuconazol apresentou maior viabilidade econômica nas três doses testadas. Originally from South America, eucalyptus rust is caused by the fungus Puccinia psidii, and has become a limiting disease for eucalyptus cultivation in Brazil, requiring the adoption of control measures, for example the chemical control. To evaluate the efficiency and economic viability of fungicides to control eucalyptus rust, a test has set up in the field. The experimental design adopted for the test has randomized blocks, 3 x 3 (3 products and 3 doses) in factorial arrangement, with 0.5, 1.0 and 1.5 mL or g of commercial product per liter of solution. The treatments were: 1-) control; 2-) Fungicide azoxystrobin (strobilurins); 3-) Fungicide tebuconazole (triazole); 4-) Fungicide tebuconazole + trifloxystrobin (triazole + strobilurins). Four replicates were used to assess plant disease severity based on the percentage of damaged leaf area. Higher fungicide doses led to a greater reduction of the disease in the plants at 7 and 15 days after the application. The fungicide tebuconazole + trifloxystrobin at 1.5 mL / L was the most efficient against eucalyptus rust under field conditions. The fungicide tebuconazole was the most economically viable at the three tested doses. Universidade Estadual Paulista (UNESP) Faculdade de Ciências Agronômicas (FCA) Setor de Defesa Fitossanitária Copener Florestal Ltda Universidade Estadual Paulista (UNESP) Faculdade de Ciências Agronômicas (FCA) Setor de Defesa Fitossanitária