Population fluctuation of some insect pests infesting sugar beet and the associated predatory insects at Kafr El-Sheikh Governorate

El‐Dessouki, S. A.; EI-Awady, S.M.; El-Khawass, K.A.M.H.; Mesbah, Amira E.; El-Dessouki, W.A.A.

doi:10.1016/j.aoas.2014.06.016

Cited by 16 publications

(6 citation statements)

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“…As, Abd El-Ghany (1995) found the larval population of S. ocellatella larval population was very low at relatively low temperatures, while the highest population was detected from May to August. Also, El-Dessouki et al, (2014) reported that sugar beet plants harbored three main insect species: C. vittate, P. mixta and S. ocellatella and the highest infestation with these species occurred from May to April. Bazazo and Ibrahim (2019) found that the population of S. ocellatella pupae increased gradually to reach the highest population of 24, 36, and 36 pupae/40 infested petioles on Feb. 18 th , Mar.…”

Section: Discussionmentioning

confidence: 99%

Survey, Population Density and Food Preference of Predatory Formicid Species on Scrobipalpa ocellatella Boyd. Life Cycle Stages under Egyptian Sugar Beet Fields

Mashaal

Hegazy

2023

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The current study was carried out at the Experimental Farm of Sakha Agricultural Research Station during three cultivations in 2018/19 and 2019/20 seasons. The present study includes a survey of the predatory formicid species associated with the beet moth, Scrobipalpa ocellatella Boyd. larvae in sugar beet fields. The obtained results showed larvae numbers of S. ocellatella increased towards the end of the season and formicid populations were synchronous with that of S. ocellatella in the three cultivations. The simple correlation coefficient values between S. ocellatella larvae population and the predatory formicid populations were very highly positive significant in the two seasons. Five predatory formicid species were recorded belonging to the family Formicidae under the order Hymenoptera, three of them were: Tetramorium depressiceps Menozzi, Tetramorium brevicoryne Brondroit and Camponotus thoracicus (Fah.) recorded by high percentages. While the other two formicid species: Tapinoma simrothi Krausse and Solenopsis latro L. recorded low percentages. As for predation and food preference, the predatory formicid species prefer S. ocellatella larvae to eggs and pupae throughout the three sugar beet cultivations during the two seasons of study. These results proved that formicid species are important predators to S. ocellatella larvae. There for the current investigation aimed to add some contributions to the knowledge of the predatory formicid species as natural biological control agents in Egyptian sugar beet fields.

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Section: Discussionmentioning

confidence: 99%

Survey, Population Density and Food Preference of Predatory Formicid Species on Scrobipalpa ocellatella Boyd. Life Cycle Stages under Egyptian Sugar Beet Fields

Mashaal

Hegazy

2023

Egyptian Academic Journal of Biological Sciences. A, Entomology

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“…Some pest populations (young larvae, caterpillars and adults) emerged and occurred during rainy seasons more than during dry seasons (El-Dessouki et al 2014). These attempted to make multiple generations.…”

Section: Resultsmentioning

confidence: 99%

Interaction of the fluctuation of the population density of sweet potato pests with changes in farming practices, climate and physical environments: A 11-year preliminary observation from South-Kivu Province, Eastern DRCongo

Munyuli¹,

Kalimba²,

Mulangane³

et al. 2017

Open Agriculture

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Open Agriculture. 2017; 2: 495-530 determined which climatic factors may be used as best predictors of the different status of pest populations (declines, outbreaks). Farmer based data was obtained using a semi structured questionnaire administered to several of farmers. Population dynamics of sweetpotato pests were monitored year-round from 2005 to 2015 in South Kivu province, eastern DRCongo. Field monitoring (visual counts) observations (population dynamic of different soil-dwelling and surface dwelling arthropods visiting sweetpotato fields) combined with a survey of farmers' knowledge on sweetpotato pests and their practices in the management of these pests in SouthKivu Province were conducted for 11 years. Monitoring (with field observations and counts) was carried out in fields under different farming practices (monocropping and inter-cropping) in sites located at different altitudes. Similarly, data for climatic factors, for the same period, were collected from Lwiro Research center. Regression models were applied to understand the linkages between environmental factors (rainfall and temperature) and pest population dynamics. The results indicated that different varieties (local and improved ones) of sweetpotato are grown three times (3 seasons) per annum under various cropping systems (sole crop, mixed crops) in various agroecological zones at different altitudes. Various arthropod species visit the crop at its different stages of development including classically known pests (Acraea acerata, Cylas spp.) or as vectors of diseases (Bemisi tabaci, Aphis spp.). The results indicated a high fluctuation in the population density of different pests. The change in the population dynamics were characterized by gradual increase in the populations during rainy seasons followed by decline during dry seasons (hot months of the year). Significant (P<0.05) https://doi.org/10.1515/opag-2017-0054 received January 2, 2016; accepted March 19, 2017 Abstract: Sweetpotato is a major food security crop grown in eastern Democratic Republic of Congo. Its production is however limited due to high prevalence of pests and diseases among other abiotic and biotic factors. A study was designed to aid understanding the knowledge of farmers about pests and their perception about climate variability impacts, as well as documenting the phenology of sweetpotato pests (pest population dynamics) in relationship with weather factors. The paper aimed at differences were observed in the population dynamics between sole sweetpotato and mixed sweetpotato intercropping. There was a synchronization of multiple pest generations (biannual, multiannual cycles of reproduction) built up with early rains. The results indicate that rainfall and maximum temperature were critical to the survival and population built up of the pest population. High rainfall in the previous months caused increases in the population density in the subsequent months within a year. The population dynamic (seasonal occurrence) over months and years was likely to coincide ...

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“…The tortoise beetle, Cassida vittata Vill. (Coleoptera: Chrysomelidae) is one of the most devastating insects in sugar beet fields, especially the second (mid-September) and third (mid-October) (El-Dessouki, 2019). The larvae and adults of this insect feed upon sugar beet leaves causing reduction in sugar content and sugar root yield by 40.10 and 56.20%, respectively (Bazazo and Besheit, 2019).…”

Section: Introductionmentioning

confidence: 99%

The First Field Evaluation of Bacillus thuriengiensis Bt407 against Cassida vittata and Its Natural Enemies In Egyptian Sugar Beet Fields.

Heba

Ghada²

2023

Egyptian Academic Journal of Biological Sciences, F. Toxicology

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Population fluctuation of some insect pests infesting sugar beet and the associated predatory insects at Kafr El-Sheikh Governorate

Cited by 16 publications

References 1 publication

Survey, Population Density and Food Preference of Predatory Formicid Species on Scrobipalpa ocellatella Boyd. Life Cycle Stages under Egyptian Sugar Beet Fields

Survey, Population Density and Food Preference of Predatory Formicid Species on Scrobipalpa ocellatella Boyd. Life Cycle Stages under Egyptian Sugar Beet Fields

Interaction of the fluctuation of the population density of sweet potato pests with changes in farming practices, climate and physical environments: A 11-year preliminary observation from South-Kivu Province, Eastern DRCongo

The First Field Evaluation of Bacillus thuriengiensis Bt407 against Cassida vittata and Its Natural Enemies In Egyptian Sugar Beet Fields.

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