scholarly journals Population Changes of Important Sucking-Pests <i>Aphis gossypii</i> (Glove.) and <i>Bemisia tabaci</i> (G.) in the New Varieties Second Plant (After Canolai) of Iran

2021 ◽  
Vol 9 (3) ◽  
pp. 67
Author(s):  
Mojeni Taghi Darvish ◽  
Zangi Mohammadreza
Keyword(s):  
Bemisia Tabaci ◽  
Aphis Gossypii ◽  
Population Changes ◽  
New Varieties

scholarly journals The Role of Soil Amendments on Population Dynamics of Insect Pests, Growth Parameters and Yield of Eggplant, Solanum melongena (L.) Moench

2017 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
P. K. Baidoo ◽  
M. B. Mochiah ◽  
D. Asare ◽  
A. A. Sefah
Keyword(s):  
Soil Fertility ◽  
Plant Height ◽  
Bemisia Tabaci ◽  
Insect Pests ◽  
Soil Amendments ◽  
Aphis Gossypii ◽  
Solanum Melongena ◽  
Cow Dung ◽  
Leucinodes Orbonalis ◽  
Number Of Leaves

Loss of soil fertility as a result of continuous cropping on the same piece of land has necessitated the need to improve soil fertility for better crop yields. Inorganic and organic fertilizers have been used to improve soil fertility, however, excessive use of soil amendments improve vegetative growth of plants thereby attracting large numbers of insect pests. Cow dung and poultry droppings were used as soil amendments in a field experiment using eggplant Solanum melongena. The effects of these organic manures were compared with inorganic fertilizer (NPK) and a control where there was no application of soil amendment in a randomized complete block design with 3 replicates. Parameters studied were pests’ and their numbers, plant height, number of leaves per plant, leaf area, stem girth and yield. The major insect pests identified on the plant were Bemisia tabaci, Aphis gossypii, Leucinodes orbonalis and Eublemma olivacea. Bemisia tabaci and Aphis gossypii scores were significantly larger on cow dung and poultry manure plots. Leucinodes orbonalis and Eublemma olivacea numbers were not significantly different on the treated and control plots. Mean plant height, number of leaves and yield differed significantly among the soil amended plots. Even though soil amendments improve the nutrient content of the soil and the yield of crops it could lead to increase in pests numbers and damage caused to plants.

scholarly journals Análise Faunística de Insetos Associados à Cultura do Quiabeiro [Abelmoschus esculentus (L.) Moench] em Plantio Comercial, no Município de Canindé de São Francisco, SE, Brasil

2016 ◽  
Vol 9 (2) ◽  
pp. 146-149
Author(s):  
Daniele Cristina de Oliveira Lima da Silva ◽  
Marcelo Alves Ramos ◽  
Henrique Costa Hermenegildo da Silva ◽  
Ângelo Giuseppe Chaves Alves
Keyword(s):  
Bemisia Tabaci ◽  
Aphis Gossypii ◽  
Faunal Analysis ◽  
Hippodamia Convergens ◽  
Commercial Cultivation ◽  
Aphis Gossypii Glover ◽  
Icerya Purchasi ◽  
Eriopis Connexa ◽  
Diabrotica Speciosa ◽  
Oxycarenus Hyalinipennis

Resumo. A presente pesquisa objetivou estudar a entomofauna associada ao cultivo comercial de quiabo, no Município de Canindé do São Francisco (SE), por meio de análise faunística. As espécies Bemisia tabaci (Gennadius) biótipo B, Aphis gossypii (Glover), Phenacoccus sp., Icerya purchasi (Maskell) e Lagria villosa (Fabricius) foram as principais pragas do quiabeiro neste estudo. Diabrotica speciosa (Germar) e Gryllus assimilis (Fabricius) foram  pragas de importância secundária. Leptoglossus zonatus (Dallas), Nezara viridula L., Pachycoris torridus (Scopoli) e Oxycarenus hyalinipennis (Costa) foram pragas esporádicas. Foram encontradas quatro espécies de insetos predadores, sendo uma constante e dominante (Cycloneda sanguinea L.), uma dispersa, mas constante (Eriopis connexa German) e duas raras (Hippodamia convergens Guérin-Méneville e Psyllobora confluens F.). Insect Faunal Analysis Associated with the Commercial Cultivation of Okra [Abelmoschus esculentus (L.) Moench] in Canindé do São Francisco, SE, BrazilAbstract. This research aims to study the entomofauna associated with the commercial cultivation of okra in municipality of Canindé do São Francisco, Sergipe State, Brazil, through faunal analysis. The species Bemisia tabaci (Gennadius) biotype B, Aphis gossypii (Glover), Phenacoccus sp., Icerya purchasi (Maskell) and Lagria villosa (Fabricius) were the okra key pests. Diabrotica speciosa (Germar) and Gryllus assimilis (Fabricius) were plagues of secondary importance. And Leptoglossus zonatus (Dallas), Nezaraviridula L., Pachycoris torridus (Scopoli) and Oxycarenus hyalinipennis (Costa) were sporadic pests. Four species of predatory insects were found, a constant and dominant (Cycloneda sanguinea L.) a dispersed, but constant (Eriopis connexa German) and two rare (Hippodamia convergens Guérin-Méneville and Psyllobora confluens F.).

scholarly journals Study on Population Changes of Important Sucking – Pests (Aphis Gossypii (Glov.) and Bemisia Tabaci (G.) in the New Varieties Second Plant (After Canola) in the Golestan Province of Iran.

2021 ◽  
Author(s):  
Mojeni Taghi Darvish ◽  
Mohammadreza Zangi
Keyword(s):  
Block Design ◽  
Aphis Gossypii ◽  
Research Station ◽  
Lint Percentage ◽  
Cotton Pests ◽  
The North ◽  
Randomized Block Design ◽  
North Of Iran ◽  
Golestan Province ◽  
New Varieties

Abstract Investigating the population dynamic of important cotton pests on new cotton varieties is important. Cotton cultivars have important pests such as thrips, aphids, whitefly and bollworm. Considering the premature cultivars with proper yield for second cultivation in cotton-growing Golestan province at the north of Iran, this study seems necessary. This genotypes was cultivated with 9 treatments in 4 replicates. A completely randomized block design was carried out in Hashem Abad research station in a spray-free plot with the dimensions of 30 × 80 cm in 2018-2019 years. According to the results of this study, analysis of variance of two years showed that the yield of N2G80 with 1538 g in the plot with 41.7% lint percentage had the highest yield, and M13 with 685 g in the plot and 35.8% lint percentage in the lowest yield they had.The infestation rate of the genotypes tested in the population of green aphid of cotton in K880-2 and Golestan® cultivars was 48.88 and 40.31 in aphid with the highest density, and the SKT-133 and TBL-60 genotype respectively with 27.15 and 29.11 aphids per leaf had the least infestation. The amount of infestation of the genotypes tested to the population of whitefly cotton on the N2G80 and TBL-60 genotype was 90.76 and 68.86 whitefly in the leaf with the highest infestation and N2G80 and TBL-60 genotype respectively with 40.05 and 75.51 white fly in leaf were the least infested. Correlation coefficient between traits was equal to 0.55. The number of bolls per plant was not correlated with other traits including boll weight, lint percentage, aphid and white fly.

Screen Hole Size and Barriers for Exclusion of Insect Pests of Glasshouse Crops

1991 ◽  
Vol 26 (1) ◽  
pp. 169-177 ◽  
Author(s):  
James A. Bethke ◽  
Timothy D. Paine
Keyword(s):  
Bemisia Tabaci ◽  
Myzus Persicae ◽  
High Density Polyethylene ◽  
Insect Pests ◽  
Aphis Gossypii ◽  
Liriomyza Trifolii ◽  
Hole Size ◽  
Aphis Gossypii Glover ◽  
Hole Geometry ◽  
Pass Through

Laboratory trials were conducted to determine the effectiveness of screens as barriers to five major greenhouse pests. Four screen types with a range of hole sizes were tested: high density polyethylene sheets perforated with holes that were in the center of an indentation on one side and a corolla of material on the opposite side; a woven mesh of polyethylene strands; a filter of unwoven polyester; and woven brass strainer cloth. Liriomyza trifolii (Burgess), Aphis gossypii Glover, Myzus persicae (Sulzer), Bemisia tabaci (Gennadius), or Frankiniella occidentalis (Pergande) were placed in a cage with a test screen separating them from a source of light and food. The insects' ability to pass through any barrier could not be predicted solely from thoracic width and hole size. Hole geometry or the way in which holes were formed were important elements in insects' exclusion. The most effective barriers to insect penetration correspondingly reduced air flow. The unwoven polyester filter designed specifically as an insect barrier did not restrain any of the insects under the methodology used. Results suggest that the maximum hole sizes for exclusion were: L. trifolii (640 μm), A. gossypii (341 μm), B. tabaci (462 μm) and F. occidentalis (192 μm).

The effect of yam seed (Pachyrhizus erosus Urban) extract on the abundance of Bemisia tabaci Genn. and Aphis gossypii glover on eggplant plants

2020 ◽  
Vol 44 (3) ◽  
pp. 359
Author(s):  
Asni Johari ◽  
Titik Handayani ◽  
Sri Mutia Dewi ◽  
Muswita ◽  
Ratna Sari Dewi
Keyword(s):  
Bemisia Tabaci ◽  
Aphis Gossypii ◽  
Pachyrhizus Erosus ◽  
Aphis Gossypii Glover

scholarly journals Intervalo de aplicação do Azamax® sobre pragas sugadoras do algodoeiro e seus inimigos naturais

2019 ◽  
Vol 14 (3) ◽  
pp. 389-396
Author(s):  
Cicero Antonio Mariano Santos ◽  
Francisco Roberto de Azevedo ◽  
Fabio Aquino de Albuquerque ◽  
Gildo Pereira Araújo ◽  
Willy Izidío Damasseno Silva ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Aphis Gossypii

O algodoeiro é atacado por pragas sugadoras que têm sido controladas com inseticidas químicos, causando problemas à saúde do aplicador e poluição do meio ambiente, mas o uso de produtos botânicos como o nim vem sendo estudado nos últimos anos. O efeito do intervalo de aplicação do inseticida Azamax® foi avaliado sobre pragas sugadoras e seus inimigos naturais. O estudo foi conduzido na Embrapa Algodão em Barbalha, Ceará. O Azamax® foi aplicado em dois intervalos de aplicação (sete e 15 dias), em cobertura total das plantas com pulverizador costal manual com bico cônico. As amostragens foram realizadas semanalmente em 40 plantas por parcela dos 13 aos 90 dias após a emergência das plantas. Pulgão, tripes e a cochonilha foram amostrados nos ponteiros das plantas, a mosca branca na folha do 5º nó e o ácaro vermelho na parte mediana, enquanto os inimigos naturais, nos locais onde as pragas foram amostradas. O Azamax® aplicado aos sete e 15 dias reduz a taxa de infestação do pulgão Aphis gossypii, assim como, a mosca branca Bemisia tabaci biótipo B e a cochonilha Planococcus minor, não tendo efeito no ácaro vermelho, para os dois períodos de aplicação. Não foi observado efeito direto do Azamax® sobre a população dos inimigos naturais das principais pragas sugadoras do algodoeiro.

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