Toxicity of Taro Plant Leaves, Colocacia esculanta, Against the German Cockroach, Blattella germanica
F. A.Bakr
Reda
Department of Entomology, Faculty of Science, Ain Shams University
author
Abd Elwahab
Ibrahim
Entomology Department, Faculty of Science, Benha University, Qaluobiya, Egypt
author
Olfat
El-Monairy
Entomology Department, Faculty of Science, Benha University, Qaluobiya, Egypt
author
Yasser
El-Sayed
Entomology Department, Faculty of Science, Benha University, Qaluobiya, Egypt
author
Maysa
Hegazy
Entomology Department, Faculty of Science, Benha University, Qaluobiya, Egypt
author
text
article
2017
eng
The toxicity of Colocacia esculanta leaves extracts on adult males and females of Blattella germanica cockroaches under laboratory conditions was investigated in Benha City, Egypt. Bioassays showed that ethanol and petroleum ether extracts had a toxic effect against the tested insects and mortality percentage for adult males and females increased with the increase in the concentration. The LC50 values indicated that males were more sensitive to both extracts than females and ethanol extract was more toxic than petroleum ether extract. At 48h post-treatment, the LC50 values of ethanol extract were 2.42 and 4.001% for treated males and females, respectively, while that of petroleum ether extract were 4.42 and 5.46%, respectively.
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Egyptian Society of Biological Sciences
2090-0791
9
v.
2
no.
2017
1
5
https://eajbsf.journals.ekb.eg/article_17042_163f08d978ebd41836ba72b95245dffe.pdf
dx.doi.org/10.21608/eajbsf.2017.17042
Control of Soybean Stem Fly Melanagromyza sojae (Diptera: Agromyzidae) by Sticky Color Traps in Soybean Field
Hanan
Alfy
Plant Protection Research Institute, Field Crop Pests Department, ARC, Giza, Egypt
author
text
article
2017
eng
Five color traps were used to study the effect of color upon the attractiveness of Soybean stem fly Melanagromyza sojae (Zehnter),(Diptera: Agromyzidae) in Nubaria Agriculture Research Station’s farm, throughout 2015 and 2016 seasons. White, yellow, red, green, and blue sticky traps were used to estimate the attraction to suppress of M. sojae damage in soybean fields. White and yellow traps had great effect in suppressing the damage, there was increasing in seed’s weight by using white and yellow traps which mean that the mass trapping of these two color was successful in controlling M. sojae, blue trap had low effect and other traps were not effective in the captivity of the adult.
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Egyptian Society of Biological Sciences
2090-0791
9
v.
2
no.
2017
7
13
https://eajbsf.journals.ekb.eg/article_17043_958412cac2633f4e7dce9403c5647c24.pdf
dx.doi.org/10.21608/eajbsf.2017.17043
Influence of Potassium, Micronutrients, and Their Combinations as Foliar Applications to Suppress Soybean Stem Fly, Melanagromyza sojae (Diptera: Agromyzidae) on Four Soybean Common Varieties
Hanan
Alfy
Plant Protection Research Institute, Field Crop Pests Department, ARC, Giza, Egypt
author
text
article
2017
eng
The present studies followed the main study which was carried out at the experimental farm of the Faculty of Agriculture Benha University, Qalubiya Governorate, during two successive seasons: 2014 and 2015. The influence of potassium, micronutrients, and their combinations as foliar applications to suppress soybean stem fly, Melanagromyza sojae (Zehnt.) (Diptera: Agromyzidae) on four soybean common varieties was studied. The experimental design was a spilt plot with four replications, main plots (i.e., the cultivars Crowford, Giza-22, Giza-35, and Giza-111) and sub plots were assigned to eight. Four soybean cultivars and eight foliar application treatments (potassium silicate, potassium sulphate, potassium hydroxide, micronutrients (Fe, Zn, and Mn), potassium silicates + micronutrients, potassium sulphate + micronutrients, potassium hydroxide + micronutrients and control) were evaluated. The study showed that (potassium silicates + micronutrients) reduced the most impact from the soybean stem fly as indicated by the tunneling length and the number of larvae inside the plant with no significant differences among varieties. There were significant differences in relative increases of seed and stover yield with potassium silicates + micronutrients (25% of the seed yield and 0.30% as an average per two seasons compared to the control). Results also showed a significant increase in the total uptake of potassium with micronutrients for the rest of the treatments; especially with potassium silicate, and perhaps for this reason micronutrients increase the absorption of potassium allowing the plant to build the restoration after the infection. The percentage of lignin content in soybean dry plants resulted in significant increase in all treatments compared with control especially in potassium silicates + micronutrients. Increasing in lignin contents lead to the increase in the secondary xylem and decrease in the pith diameter and then lead to hamper the growth of larva in the pith.
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Egyptian Society of Biological Sciences
2090-0791
9
v.
2
no.
2017
15
20
https://eajbsf.journals.ekb.eg/article_17044_15af623e2ce541ead4898e1cc2215553.pdf
dx.doi.org/10.21608/eajbsf.2017.17044
Comparative in Vitro Evaluation of Three Geographically Different Isolates of Nucleopolyhedrovirus of Spodoptera littoralis in Egypt
Marwa
El-Sabagh
Plant Protection Institute, Agric. Research Centre, Dokki, Giza, Egypt
author
text
article
2017
eng
The present study aimed to evaluate the effect of three isolates of Egyptian Nuclearpolyhedrovirus geographically different, namely NPV El-Qalioubia, NPV Al-Fayoum and NPV El-Beheira which isolated in Bio-insectcide Production Unit Plant Protection Research Institute, were evaluated against Spodoptera littoralis larvae under laboratory conditions. Five concentrations of Occlusion Bodies (OBs) from each of the three NPVs isolates (1×106, 1×107, 1×108, 1×109 and 1×1010 PIB/ml) were used against 2nd insters larvae of S. littoralis. The results showed that the percentage mortality of the larvae increased with increasing concentrations of tested pathogens. Also, the isolate NPV Al-Fayoum was the most effective against S. littoralis larvae at different tested concentrations. In biological Studies all tested NPVs isolates decreased the mean larval duration than untreated larvae and decreased of pupation.NPV Al-Fayoum recorded the least Pupation percentage 45.7%. All tested NPVs isolates showed significantly shortening in the mean adult longevity for both males and females. All tested NPVs isolates significantly decreased the mean number of eggs laid and hatched /female.
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Egyptian Society of Biological Sciences
2090-0791
9
v.
2
no.
2017
21
28
https://eajbsf.journals.ekb.eg/article_17045_b2e2553be6becdb78d86f4b79e6e1fa7.pdf
dx.doi.org/10.21608/eajbsf.2017.17045
Laboratory studies to evaluate the difference in the toxic effects of three biopesticides on the two ladybird predators Coccinellaundecimpunctata L. and HippodamiaconvergensGuer.(Coleoptera : Coccinellidae), reared on an artificial diet.
Esmat
Kares
Biological Control Research Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
author
IsmaiI
Bahy El-Din
Biological Control Research Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
author
Mohamed
Ali
Biological Control Research Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
author
Mostafa
El-Khawas
Biological Control Research Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
author
text
article
2017
eng
Laboratory studies were conducted to evaluatethe toxic effects of three different treatments: the bioinsecticide Biovar (containing the fungus Beauveriabassiana), Andros (an Abamectin derivative) and Radiant (a Spinosadderivative) on the two ladybird beetles;Coccinella undecimpunctata and Hippodamia convergens, that werereared on a laboratory artificial diet. The LC50 values obtained forthe ladybird beetle C. undecimpunctata were; 2.9608×105 viable spores, 0.8003%and 0.3142%. The corresponding LC50 valuesobtained for the ladybird beetle H. convergens were; 3.8659×105 viable spores, 0.8065%and 0.3987%, for the three biopesticides Biovar,Andros and Radiant, respectively. The mortality percentageswere higher in case of the ladybird beetle, C. undecimpunctata comparingwith the ladybird beetle, H. convergens. As, the concentrations of eachtreated compounds increased, the mortality percentages were also increased.Therefore, using the fungal biofungicide; Biovar and the natural pesticideAndros may be recommended to be applied, for giving more safety on the twoprevious predatory species especially by using them at low concentrationsrates. They could be used side by side with other available safe controlmethods, within Integrated Pest Management (IPM) strategies, to protect man andnatural enemies including predators and also his surrounding environment frompollution.
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Egyptian Society of Biological Sciences
2090-0791
9
v.
2
no.
2017
29
38
https://eajbsf.journals.ekb.eg/article_17046_30b8845a817b4a36461d34a4a78b5373.pdf
dx.doi.org/10.21608/eajbsf.2017.17046