Bemisia tabaci(Gennadius) population density and pupal size are dependent on rootstock and nitrogen in hydroponic tomato crop

2016 ◽  
Vol 19 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Katja Žanić ◽  
Gvozden Dumičić ◽  
Branimir Urlić ◽  
Gabriela Vuletin Selak ◽  
Smiljana Goreta Ban
Keyword(s):  
Population Density ◽  
Bemisia Tabaci ◽  
Tomato Crop ◽  
Pupal Size

scholarly journals Bemisia tabaci MED Population Density as Affected by Rootstock-Modified Leaf Anatomy and Amino Acid Profiles in Hydroponically Grown Tomato

2018 ◽  
Vol 9 ◽  
Author(s):  
Katja Žanić ◽  
Gvozden Dumičić ◽  
Marija Mandušić ◽  
Gabriela Vuletin Selak ◽  
Ivana Bočina ◽  
...  
Keyword(s):  
Amino Acid ◽  
Population Density ◽  
Bemisia Tabaci ◽  
Leaf Anatomy ◽  
Amino Acid Profiles ◽  
Hydroponically Grown

scholarly journals Effect of Silicon fertilization on two major insect pests of tomato under greenhouse conditions

2021 ◽  
Author(s):  
Aqeel Alyousuf ◽  
Dawood Hamid ◽  
Mohsen A. Desher ◽  
Amin Nikpay ◽  
Henk-Marten Laane
Keyword(s):  
Population Density ◽  
Insect Pests ◽  
Insect Pest ◽  
Tomato Leaf ◽  
Leaf Miner ◽  
Pest Species ◽  
Tomato Crop ◽  
Soil Drench ◽  
Tomato Leaf Miner ◽  
Acid Formulation

Abstract Tomato (Solanum lycopersicum L) is an important vegetable crop in Iraq. This horticultural crop is attacked by several insect pest species. Among them, the whitefly Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) and the tomato leaf miner Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) are the major threat of greenhouse tomatoes in Basrah province in south Iraq. The management of these pests is heavily based on application of chemical pesticides. Vast application of pesticides caused harmful damage to the environment, human health and may increasing the risk of pest resistance on insect populations. One of the promising strategies which are compatible with organic farming is application of silicon for enhancing plant vigor and resistance to pest damage on various agricultural crops. Due to these facts, the experiments have been carried out at Basrah University to evaluate the effects of silicon (Si) fertilization on tomato plants for reducing damage of these two major pests. Treatments comprised two type of Si applications (Soil drench treatment and foliar spraying) with four Si concentrations (0, 0.5, 1 and 2%) of AB Yellow ® silicic acid formulation. The population density of B. tabaci and T. absoluta were studied weekly during the growth season. The results clearly demonstrated that Silicon applications significantly decreased the population of immature of both whiteflies and tomato leaf miner on tomato crop in the greenhouse; Si-Foliar spraying was more effective in reducing the population density of these key pests compared to Si- soil drench application.

scholarly journals Resistance of tomato genotypes to the silverleaf whitefly mediated by acylsugars

2009 ◽  
Vol 27 (3) ◽  
pp. 345-348 ◽  
Author(s):  
Juliano TV de Resende ◽  
Wilson R Maluf ◽  
Maria das Graças Cardoso ◽  
Luciano Donizete Gonçalves ◽  
Marcos V Faria ◽  
...  
Keyword(s):  
Lycopersicon Esculentum ◽  
Bemisia Tabaci ◽  
The Other ◽  
Wild Accession ◽  
Silverleaf Whitefly ◽  
Tomato Crop ◽  
Lycopersicon Pennellii ◽  
Biotype B ◽  
Bemisia Tabaci Biotype B ◽  
Tomato Genotypes

Acylsugars in the leaflets of the wild accession LA-716 (Lycopersicon pennellii) gives resistance to Bemisia spp., which causes expressive losses to the tomato crop. The goal of this work was to evaluate the resistance to the silverleaf whitefly (Bemisia tabaci biotype B) of previously selected genotypes, based on the level of acylsugars in the leaflets. F2BC1 plants {F2[Lycopersicon esculentum TOM 584 x (L. esculentum TOM 584 x L. pennellii LA-716)]} were selected for extreme contents of acylsugars: BPX-370B pl#30-275, BPX-370B pl#79-278, BPX-370B pl#30-380, BPX-370B pl#25-271 (high contents), BPX-370B pl#30-02, BPX-370B pl#30-142 (low contents). These genotypes, along with the parents TOM 584 and LA-716, were submitted to a silverleaf whitefly infestation. Oviposition and nymph development were evaluated. The oviposition on the genotypes BPX-370B pl#30-275 and BPX-370B pl#30-380 was significantly lower to that which occurred on the genotype TOM 584 and in the other genotypes of the F2RC1 generation. The four genotypes selected for high acylsugar contents presented the lowest number of nymphs, except to LA-716. Although the number of eggs in the BPX-370B pl#25-271 and BPX-370B pl#79-278 genotypes (high contents) was elevated, the number of nymphs was reduced, similarly to the other high-acylsugar genotypes, probably due to antibioses effect.

Bemisia tabaci (Hemiptera: Aleyrodidae) Species Complex From Cotton Cultivars: A Comparative Study of Population Density, Morphology, and Molecular Variations

2014 ◽  
Vol 107 (2) ◽  
pp. 389-398 ◽  
Author(s):  
Asha Thomas ◽  
Anand Kar ◽  
K. B. Rebijith ◽  
R. Asokan ◽  
V. V. Ramamurthy
Keyword(s):  
Population Density ◽  
Comparative Study ◽  
Bemisia Tabaci ◽  
Species Complex

Binomial sampling plans for estimating and classifying population density of adult Bemisia tabaci in cotton

1996 ◽  
Vol 80 (2) ◽  
pp. 343-353 ◽  
Author(s):  
Steve E. Naranjo ◽  
Hollis M. Flint ◽  
Thomas J. Henneberry
Keyword(s):  
Population Density ◽  
Bemisia Tabaci ◽  
Sampling Plans ◽  
Binomial Sampling

scholarly journals Change of population density of tobacco whitefly (Bemisia tabaci, Aleyrodidae, Hemiptera) by RNAi

2015 ◽  
Vol 42 (1) ◽  
pp. 7-13 ◽  
Author(s):  
Na-Yeon Ko ◽  
Young-Nam Youn
Keyword(s):  
Population Density ◽  
Bemisia Tabaci ◽  
Tobacco Whitefly

DENSIDAD POBLACIONAL DE MOSCABLANCA Bemisia spp. (HEMIPTERA: ALEYROIDIDAE) EN EL VALLE DE GUAYMAS-EMPALME, SONORA, MÉXICO/ POPULATION DENSITY OF WHITEFLY IN THE GUAYMAS-EMPALME VALLEY, SONORA, MEXICO

Biotecnia ◽  
2016 ◽  
Vol 18 (3) ◽  
pp. 9-13
Author(s):  
Juan José Pacheco-Covarrubias ◽  
Joel Soto Nolasco ◽  
Juan Manuel Valenzuela Valenzuela
Keyword(s):  
Population Density ◽  
Population Growth ◽  
Bemisia Tabaci ◽  
The Other ◽  
Sticky Traps ◽  
Influence Of Temperature ◽  
Heat Units ◽  
Pest Infestation ◽  
Important Pest ◽  
Number Of Individuals

La mosca blanca (Bemisia tabaci) es la plaga más importante en el valle de Guaymas-Empalme, Sonora. Se determinó su densidad poblacional mediante la captura regional de adultos a través de trampas amarillas pegajosas. Los resultados indican valores de pendiente de 0.011, 0.014, 0.0045 y 0.0027 para los ciclos 2011-12, 2012-13, 2013-14 y 2014-15, respectivamente; dichos valores son diferentes estadísticamente entre sí (0.01) prueba de “t”. Por otra parte, el número promedio de individuos capturados por semana para los ciclos antes mencionados fue de 0.67, 0.80, 0.31 y 0.14, respectivamente. Finalmente, el cálculo del número de generaciones que en teoría se pueden acumular mediante Unidades Calor fue de 13.5, 9.36, 15.32, 11.96, para los ciclos antes mencionados. Los resultados no detectan evidencia determinante de la influencia de la temperatura ni del alimento sobre el crecimiento poblacional de la plaga, por lo que el manejo de focos de infestación de la plaga y el ordenamiento de fechas de cultivos son determinante para la definición del estatus fitosanitario de la plaga. ABSTRACT Whitefly is the most important pest in the Guaymas-Empalme valley, Sonora. México. The population density of whitefly was evaluated trough regional capture of whitefly adults through yellow sticky traps. The data indicate slope values of 0.011, 0.014, 0.0045 and 0.0027 for 2011-12 , 2012-13, 2013-14 and 2014-15 cycles, respectively; these values are statistically different from each other (0.01) test “t”. Moreover, the average number of individuals caught weekly was 0.67, 0.80, 0.31 and 0.14. Finally, the number of generations which in theory can be accumulated by heat units was 13.5, 9.36, 15.32, 11.96. The results did not detect evidence of the influence of temperature and crops on the population growth of the pest; on the other hand the management of outbreaks of pest infestation and crop dates control are crucial for defining the pest status.

Evaluation of Some Predatory Mites effect Against Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) Infesting Tomato Crop

2020 ◽  
Vol 12 (2) ◽  
pp. 247-159
Author(s):  
Ayman Shehawy ◽  
Amna Maklad ◽  
Waleed Mahmoud ◽  
Wessam Filfilan
Keyword(s):  
Bemisia Tabaci ◽  
Predatory Mites ◽  
Tomato Crop
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