Influência De Sistemas De Manejo De Solos E De Culturas Sobre Insetos Subterrâneos

Silva, Mauro Tadeu Braga da; Grützmacher, Anderson Dionei; Ruedell, J; Link, Dionísio; Costa, Ervandil Corrêa

doi:10.1590/s0103-84781994000200004

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…Although the occurrence of insects of different species can be higher in a soil that has not been disturbed by farm equipment (Alvarado, 1979;Stinner & House, 1990;Silva et al, 1994aSilva et al, , 1994b, in this study it did not occur. In contrast, the extent of damage caused by white grubs on soybeans was similar in no-tillage and plowed areas.…”

Section: White Grub Versus Soil Managementcontrasting

confidence: 53%

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Effect of soil management on the white grub population and damage in soybean

Oliveira

Hoffmann-Campo

Garcia³

2000

Pesq. agropec. bras.

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-To evaluate the effect of soil management systems on population of white grubs, (Phyllophaga cuyabana Moser), and on its damage in soybean, experiments were set up under no-tillage and conventional tillage (one disk plow, and a leveling disk harrow) areas. Primary tillage equipment, used in other soil management systems, such as moldboard plow, disk plow, chisel plow and heavy duty disk harrow were also tested. Fluctuation of P. cuyabana population and the extent of its damage to soybean was similar under no-tillage and conventional tillage systems. Results comparing a range of primary tillage equipment showed that it affected soil insect populations differently, depending on the time during the season in which tillage was executed. Larval mortality could mostly be attributed to their exposure to adverse factors, soon after tillage, than to changes in soil conditions. Reduction of white grub population was more evident in plots managed by heavier equipment, such as the moldboard plow. Soil tillage could be one component within the soil pest management system in soybean, however, its use can not be generalized.Index terms: Glycine max, Coleoptera, Scarabaeoidea, Melolonthidae, Phyllophaga cuyabana, cultural control, pest control. EFEITO DO MANEJO DE SOLO NA POPULAÇÃO E NOS DANOS DE CORÓS EM SOJARESUMO -Foram realizados vários experimentos para avaliar o efeito de diferentes sistemas de manejo de solo na população de corós (Phyllophaga cuyabana Moser), e seus danos em soja, em áreas de plantio direto e de preparo convencional do solo (preparo primário com arado de discos e uma gradagem niveladora). Vários implementos utilizados no preparo primário de solo, como arado de aivecas, arado de discos, escarificador e grade aradora também foram avaliados. A flutuação populacional de corós e a intensidade de dano causado por eles foram similares nas áreas de plantio direto e de preparo convencional. Os implementos de preparo primário do solo afetaram a população de corós diferentemente, dependendo da época em que o preparo de solo foi executado. A mortalidade larval pode ser atribuída mais à exposição a fatores adversos logo após o preparo, do que a mudanças nas condições do solo. A redução na população de corós foi mais evidente nas parcelas preparadas com implementos mais pesados, como arado de aivecas. O manejo de solo pode ser um componente dentro do manejo de pragas do solo em soja, porém sua utilização não pode ser generalizada.Termos para indexação: Glycine max, Coleoptera, Scarabaeoidea, Melolonthidae, Phyllophaga cuyabana, controle de culturas, controle de pragas.

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Section: White Grub Versus Soil Managementcontrasting

confidence: 53%

“…Studies conducted by Silva et al (1994a) showed that soil management system affected the species differently. According to these authors, no-tillage favored the survival of saprophytic and occasionally rhizophagous species, such as D. abderus, which needs mulch for oviposition and initial development.…”

Section: Introductionmentioning

confidence: 99%

Effect of soil management on the white grub population and damage in soybean

Oliveira

Hoffmann-Campo

Garcia³

2000

Pesq. agropec. bras.

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“…Além disso, apresenta alto potencial de produção de matéria seca (MS), em média de 7 a 10 t/ha, dependendo das condições climáticas, cultivar e fertilidade do solo, podendo chegar até 20 t/ha de matéria seca (BOGDAN, 1977 Podemos ver que as ordens de díptera e himenóptera e hemíptera correspondem a quase 73% dos insetos coletados. ALL et al, 1979;SILVA et al, 1994…”

Section: Conclusõesunclassified

Testes De Vigor Na Avaliação Da Qualidade De Sementes De Capim-Xaraés

Melo¹

2019

A Face Multidisciplinar Das Ciências Agrárias

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“…Práticas que contribuem para a manutenção ou aumento do teor da umidade no solo, como irrigação, quando viável, e o sistema de plantio direto também podem influenciar a incidência da praga, já que a oviposição diminui em solos com maior teor de umidade COSTA, 1993;SILVA et al, 1994;GALLO et al, 2002). , 1980;TIPPINS, 1982;MOAR et al, 1995).…”

Section: Manejo Da Pragaunclassified

Nematoides entomopatogênicos visando o controle de Elasmopalpus lignosellus na cultura do milho

Magnabosco¹

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The cornstalk borer, Elasmopalpus lignosellus (Zeller) (Lepidoptera: Pyralidae), is one of the pests responsible for the decrease of the productive potential of the corn, because it forms gallery on the stem, causing the tillering or death of the plant. Despite being considered a difficult-to-manage pest, it is currently used chemical control, via seed treatment and insecticide applications. However, the use of this method has presented low efficiency, besides generating problems due to incorrect use, insect resistance, population outbreaks, rise of secondary pests, increased production costs and increased human and environmental contamination. Initially, the virulence of the isolates, Heterorhabditis amazonensis MC01, H. amazonensis JPM3, H. amazonensis GL, Steinernema carpocapsae All and Heterorhabditis sp. Nepet 11 was tested on E. lignosellus pupae and caterpillars in the laboratory. The avarages were compared by the Scott-Knott test (p ≤ 0.05). Subsequently, the concentrations of 50, 100, 150 and 200 JI insect-1 of H. amazonensis GL for pupae and of H. amazonensis MC01 for caterpillars were tested in a completely randomized design with five replicates. Data were submitted to regression analysis. In greenhouse the concentrations of the isolates were again tested in vase containing corn. For caterpillars the concentrations of 190, 210, 230 and 250 JI larve-1 of H. amazonensis MC01 were tested following the completely randomized design with five replicates. For the pupae the concentrations 3380, 3500, 3620, 3740 JI vase-1 of H. amazonensis GL were tested following the same design with four replicates. Finally, the compatibility of phytosanitary products used in the treatment of corn seeds with H. amazonensis MC01 and H. amazonensis GL nematodes was tested. The isolate selection test for caterpillars showed that after 72 hours the nematodes H. amazonensis MC01 and S. carpocapse All were equally virulent differing from the others, reducing the caterpillar population by more than 90%. The isolate H. amazonensis GL stood out from the others, causing a mortality of 94% of pupae after 48 h. The concentration of H. amazonensis MC01 that caused the highest mortality of caterpillars in the laboratory was approximately 190 JI larve-1 , and the concentration of H. amazonensis GL was 157 JI pupa-1. In greenhouse the concentrations of H. amazonensis MC01 tested did not differ among themselves. In the pupae assay the concentration that caused the highest mortality was 3500 JI vase-1. The compatibility test showed that the nematodes were compatible with NeemMax®, Fortenza 600 FS® and Cruiser 350 FS® products.

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Influência De Sistemas De Manejo De Solos E De Culturas Sobre Insetos Subterrâneos

Cited by 5 publications

References 4 publications

Effect of soil management on the white grub population and damage in soybean

Effect of soil management on the white grub population and damage in soybean

Testes De Vigor Na Avaliação Da Qualidade De Sementes De Capim-Xaraés

Nematoides entomopatogênicos visando o controle de Elasmopalpus lignosellus na cultura do milho

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