Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
An Experimental Study of Certain Neonicotinoid Insecticides on the Incidence of Early Infestation of the Spiny and the American Bollworms, Growth and Lint Yield Characteristics of Cotton Plants
479
485
EN
H.
M.
El-Bassouiny
Agricultural Research Centre - Plant Protection Research Institute - Department of Bollworms - Dokki - Giza – Egypt.
10.21608/jppp.2017.46383
The cotton bollworms are major pests that reduce yield and quality of the growing cotton crop all over the world. The Spiny bollworm (SBW) <em>Earias insulana</em> (Boisd.) and American bollworm (ABW) <em>Helicoverpa armigera</em> (Hüb) are two common injurious bollworms of cotton in Egypt. A field experiment was conducted at Abo-Homos district, El-Behaira, Governorate during 2015 & 2016 cotton season to determine the efficacy of two neonicotinoid insecticides (imidacloprid and thiamethoxam) as seed dressing and seedling bed at the 3rd true leaf emergence of cotton plants (Giza 86). Reduction in the infestation and larval content/100 green bolls and/or plants of both pests was estimated through 30 - 90 days of germination. Furthermore, the total chlorophyll content, cotton yield and its fiber quality was determined. The results showed that imidacloprid and thiamethoxam caused a significant larval reduction (79.9, 75.5% & 66.9, 72.7%) of the SBW in both experimental seasons, respectively, at early infestation after 90 days of germination. In case of the ABW, thiamethoxam caused a gradual reduction (79.5, 70.8%) in both seasons, respectively. While, in imidacloprid treatment reduction was fluctuated (54.0 - 70.8%) after 90 days of germination in 2016 season. Most interestingly, the present results indicated that the application of imidacloprid and thiamethoxam as seed treatments significantly increased the total chlorophyll content in cotton leaves that enhance plant growth and improve cotton properties. In general, the selection of a suitable insecticide for controlling the cotton pests not only depends on its efficacy against the targeted insects but also on their profitable effects on cotton production and fiber quality.
Earias insulana (Boisd.),Helicoverpa armigera,neonicotinoid,Chlorophyll,Fiber Quality,yield
https://jppp.journals.ekb.eg/article_46383.html
https://jppp.journals.ekb.eg/article_46383_2977d5c0a1d76f42cf666e8117619e56.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
The Combined Effect of Entomopathogenic Nematodes on some Biological Aspects of Cotton Pests Spodoptera littoralis (Boisd) and Agrotis ipsilon (Huf.).
487
491
EN
Samah
S.
Ibrahim
Plant Protection Research Institute, Agricultural Research Center, Egypt.
samah_elasklany@yahoo.com
Souad
A.
Shairra
Plant Protection Research Institute, Agricultural Research Center, Egypt.
Heba
A.
Hassan
Plant Protection Research Institute, Agricultural Research Center, Egypt.
10.21608/jppp.2017.46385
Two species of the Entomopathogenic nematodes<em>, Steinernema carpocapsae </em>and <em>Steinernema scapterisici </em>were studied against cotton leaf worm <em>Spodoptera littoralis </em>(Boisd) and black cutworm <em>Agrotis ipsilon </em>(Hufn.).Under laboratory conditions, by using different nematodes strains at Lc<sub>50</sub> values were 3, 6, 7 juveniles IJ/ml of <em>S. scapterisici </em>,<em> S</em>.<em>carpocapsae </em>, combination of both strains and using water for control .The results investigated that effect of all treatments on some biological aspects of target pests such as, larval duration of <em>S. littoralis </em>were recorded that, 11.5, 11.5,11 and 11.8 days, after treatments with<em> S</em>.<em>carpocapsae </em>, <em>S. scapterisici</em>, combination and control, respectively. Furthermore <em>A.ipsilon</em> showed that highly tolerance more than cotton leaf worm,also the percentages of larval mortality were 32 % for <em>S</em>.<em>carpocapsae </em>,44 % for <em>S. scapterisici</em>, 26% for combination of both strains and no larvae mortality on control treatments. Also there is no significant differences between pupal duration of both target pests while, the results indicated that, significant differences between pupal weight (mg) of <em>S. littoralis</em> and <em>A. ipsilon</em>. No emergency of <em>S.littoralis</em> moths after treatment with strain <em>S.carpocapsae</em> and this percentage increased to 66 % with<em> S</em>. <em>scapterisici</em>, however the combination of both strains affected the emergency of moths to reach 33% compared with control 84%. As regard the 2<sup>nd</sup> insect pest<em> A.ipsilon</em> showed that highly emergency of moths 92 % for control treatment with water only and 50 % when treated with<em> S</em>. <em>scapterisici </em>and combination of both strains while decreased to 33% for <em>S.carpocapsae</em>. Subsequently, all the biological aspects of adults of both pests as ovi-position, fecundity (Eggs/ female), fertility and also the intermediated shapes were affected mostly by <em>S</em>. <em>scapterisici</em>, these findings might be taken into consideration in evaluating the success of the Entomopathogenic nematodes as a pathogenic insecticides for<em> S.littoralis </em>and <em>A. ipsilon </em>as an economic pests of cotton plants and opens new approaches to develop highly efficient combined biological products on the basis of entomopathogenic nematodes as a bio-agents.
Spodoptera littoralis,Agrotis ipsilon,Entomopathogenic nematodes,Steinernema carpocapsae,Steinernema scapterisici
https://jppp.journals.ekb.eg/article_46385.html
https://jppp.journals.ekb.eg/article_46385_27aada86d6e165b35a13c9621b17239d.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
The Combined Efficacy of Malathion and Spinetoram against Three Stored Product Insects
493
496
EN
M.
E. H.
Nasr
Plant Protection Research Institute, Agricultural Research Center, Dokki, Egypt.
10.21608/jppp.2017.46387
The effectiveness of malathion and spinetoram alone and in binary combinations was investigated against the adults of <em>Sitophilus oryzae</em> (L.), <em>Rhizopertha dominica</em> F. and <em>Tribolium castaneum</em> (Herbst.). The obtained results showed that, the toxicity of each insecticide to the adults of the three insect species was concentration and exposure period - dependent. Adultsof<em> S. oryzae</em> were highly susceptible to malathion alone but,<em> R. dominica</em> and <em>T. castaneum</em> adults were the least susceptible to the insecticide .While <em>R. dominica</em> adults were higher susceptible to spinetoram alone than the two other species . Co-toxicity values resulted from adding LC<sub>10</sub> of spinetoram to various malathion concentrations showed a potentiation effects on the adults of <em>T. castaneum</em> at all concentrations of malathion, on <em>R. dominica </em>at the three lowest concentrations and at the lowest concentration(0.25ppm) only on the adults of <em>S. oryzae</em>. Meanwhile an additive effect was achieved with other concentrations of malathion and LC<sub>10</sub> of spinetoram against the three tested insect species.A complete protection for stored wheat seeds was achieved with the Six tested mixtures(Mix<sub>1 </sub>- Mix<sub>6 </sub>) against adults of <em>S. oryzae </em>and<em> R. dominica </em>up to 6 months. Also, the same effect extended against<em> T. castaneum </em>adults to 5, 4 and 2 months with Mix<sub>1</sub>, each of (Mix<sub>2 </sub>and Mix<sub>3</sub>) and Mix<sub>4 </sub>,resp. Contrarily, Mix<sub>5</sub>, Mix<sub>6</sub> failed to give a complete mortality for <em>T. castaneum </em>adults at all various intervals( months). Data concluded that, stored wheat seeds treated with Mix<sub>3 </sub>(4ppmM+5ppmSm)or Mix<sub>4 </sub>(4ppm M+4ppm Sm) were protected against the three insects infestation for 3months.
https://jppp.journals.ekb.eg/article_46387.html
https://jppp.journals.ekb.eg/article_46387_1635e27cf1ae89c39e19b41f652e19a5.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Activity of the Greater Wax Moth Galleria mellonella L. and the Lesser Wax Moth Achroia grisella F. in Apiary and Storage in Kafr El-Sheikh Province
497
500
EN
Dina
M.
Fathy
Department of Economic Entomology, faculty of Agriculture, Mansoura University, Egypt.
dinahuha12@gmail.com
H.
M.
Fathy
Department of Economic Entomology, faculty of Agriculture, Mansoura University, Egypt.
H.
M.
Mansour
Apiculture department, Plant Protection Research Institute, Egypt
M.
A. R.
Ziedan
Apiculture department, Plant Protection Research Institute, Egypt
10.21608/jppp.2017.46390
The greater wax moth (GWM) and the Lesser Wax Moth (LWM) are known to be harmful on wax combs in apiaries and in storage. Activity of GWM and LWM were carried out in the apiaries in different local (Sakha, Qallinand El-Reyad)and the in stor ein Kaf El-Sheikh Governorate. In apiary ,the lower number of wax moth were recorded during December, January, and February, the percentage numbers of larvae wax moth in December were (0.00, 1.49 and 0.00 % ), January ( 0.00, 0.00 and 0.00 %) and February (0.00, 0.00 and 1.25 % larvae/ Colony) for three apiaries Sakha, Qallin and El Reyad. respectively. while the higher percentages number of larvae recorded during August, July, and September (19.23, 16.00 and 14.28%) in Sakha and (17.42,16,96 and 12,50%) in Reyad but in Qallin the higher percentages numbers of larvae were during August , September and July ( 17,91, 15,71and 12,31% larvae/ Colony) ,respectively. In storage, the experiment was carried out at storage of Beekeeping Research Section at Sakha Agriculture Research Station, five boxes (10 frames each) were vertically impacted in the store to record the number of the alive stages immature (larvae, pupa ) and adult insect of the two wax moths .In General the high infection of larvae of the GWM and LWM in storage were in May , June and July but pupae and adult of The GWM and LWM in storage during June , July, August and September during (29-35C<sup>0</sup>) and (50-55 Rh%) which might had helped in the rapid breeding of the moth.
https://jppp.journals.ekb.eg/article_46390.html
https://jppp.journals.ekb.eg/article_46390_2e84447900db73b68b4345ad152aeab4.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Effect of Light and Dark Conditions on some Biological and Physiological Aspects of Helicoverpa armigera (Hübner)
501
503
EN
A.
A. A.;
El-Sayed
Plant Protection Research Institute, ARC, Dokki, Giza,Egypt
A.
E. A.
Amer
Plant Protection Research Institute, ARC, Dokki, Giza,Egypt
A.
A. A.
Zaki
Plant Protection Research Institute, ARC, Dokki, Giza,Egypt
M.
E. M. A.
Hegab
Plant Protection Research Institute, ARC, Dokki, Giza,Egypt
10.21608/jppp.2017.46393
Experiments were carried out in Bollworms Research Department, Plant Protection Research Institute, Sharkia Branch to study effect of light (14L : 10Dh) and dark (24 Dh) on the biological and physiological aspects of <em>Helicoverpa armigera</em> (Hubner). The obtained results showed that, at the biological aspects, the larvae and pupae of <em>H. armigera </em>reared under light condition gave higher weights compared with those reared under dark condition. Under light the larval and pupal duration were shortened and larval & pupal mortality percentages were lowest. The highest adult emergence percentage, average number of deposited eggs/female and hatchability percentages were recorded for that reared in light condition compared with those reared in dark condition. At physiological aspects, <em>H. armigera</em> reared under light condition, its contents of total soluble protein and carbohydrate was increased and decreased of total lipid compared with those reared under dark condition. The results indicated that the increasing in the total contents of protein and carbohydrates in the larvae reared under light condition will be lead to increase the number of eggs/female and hatchability percentage.
Helicoverpa armigera,dark and light conditions,biological and physiological aspects
https://jppp.journals.ekb.eg/article_46393.html
https://jppp.journals.ekb.eg/article_46393_fcb8d3d98f6493ba6f6f4a12058d805b.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Monitoring the Honeydew Moth, Cryptoblabes gnidiella Millière (Lepidoptera: Pyralidae) in Pomegranate Orchards in the Northwestern Region of Egypt.
505
509
EN
R.
M.
Abdel-Moaty
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
S.
M.
Hashim
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
A.
W.
Tadros
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
10.21608/jppp.2017.46591
<em>Cryptoblabes gnidiella</em> is a polyphagous serious species attacking fruits/pods, leaves and stems. <em>C. gnidiella</em> population level in a pomegranate orchard were studied during two successive years (2015 and 2016) at El-Alamain district in the Northwestern of Egypt (Matrouh Governorate). Moths started to emerge two weeks earlier in 2016 (1<sup>st</sup> half of March) than 2015 season (2<sup>nd</sup> half of March). Moths` activity continued until the 2<sup>nd</sup> half of November 2016 or 1st half of December 2015. Three peaks were detected during the 1<sup>st</sup> half of May, 1<sup>st</sup> half of July and 2<sup>nd</sup> half of August, 2015. But four peaks were detected during 2016 season on the 1<sup>st</sup> half of May, 2<sup>nd</sup> half of June, 1<sup>st</sup> half of August and 2<sup>nd</sup> half of September. Summer months recorded the maximum flight activity, (5.01 - 6.05 moths). Spring and autumn recorded 1.30 - 1.12 moths and 1.63 - 0.72 moths. During winter, moths almost ceased to emerge (0.02 - 0.06 moths). Data showed one brood of the insect activity from mid-March to late November, with only one distinct peak of moth activity during August. The seasonal cycle consisted of an activity season prevailing of about 9 months (from March to November) followed by an inactive season of about 3 months. The majority of moths emerged from the southeastern direction with the most preferred from the south (38.93 – 47.63%), east (40.40 – 40.43%), and least from west (10.64 - 12.62%) and North (1.30 – 8.05%) directions in two successive seasons 2015 and 2016. The direct effect “simple correlation: r” of the temperature (Day Maximum Temp., Day Minimum Temp. and Day Mean Temp.) on the moth activity was significant during the two seasons of study, while the Day Relative Humidity was less effective.
https://jppp.journals.ekb.eg/article_46591.html
https://jppp.journals.ekb.eg/article_46591_56d9df52ef52f66be2333257f902c6ca.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Alternative Non-Conventional and Environmentally Safe Horticultural, Mechanical and Local Treatments to Control Cryptoblabes gnidiella Millière (Lepidoptera: Pyralidae) in Pomegranate Orchards in the Northwestern Region of Egypt
511
515
EN
S.
M.
Hashim
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
R.
M.
Abd El-Moaty
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
A.
W.
Tadros
Plant Protection Research Institute, Agric. Res. Center, MOA, Giza, Egypt
10.21608/jppp.2017.46592
Alternative non-conventional and environmentally safe means of control of <em>Cryptoblabes gnidiella </em>(Lepidoptera: Pyralidae) in pomegranate orchards by horticultural, mechanical, microbial, and local chemical treatments were evaluated at El-Alamain district, Matrouh Governorate in the northwestern of Egypt during one and two successive years (2015 and 2016). The respective reductions rates of infestation with the following 12 treatments applied for one and two successive years were as follows: dormant pruning (4.04% increased to 4.17%), summer pruning (1.01 increased to 1.39%), dormant and summer pruning (6.06 increased to 8.89%), worming (36.36 increased to 44.44%), bacterial or fungal (14.14 or 10.10 increased to 18.06 or 11.11% ,respectively), local painting or local spraying (72.73 or 78.79 increased to 83.33 or 88.89%, respectively), pruning, worming, together with bacterial or fungal (52.53 or 48.49 increased to 58.33 or 56.94%, respectively), while pruning, worming, and local painting or local spraying treatments (82.83 or 90.91 increased to 91.67 or 95.83% ,respectively). Accordingly, it could be recommended that control of <em>C. gnidiella </em>could be effectively achieved by the safe means such as worming and local painting or spraying on the infestation sites in the crown of the stem.
https://jppp.journals.ekb.eg/article_46592.html
https://jppp.journals.ekb.eg/article_46592_837c3e81fb29bee3a8952087feb28a41.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
The Role of some Natural Enemies in Controlling the String Bean Pests in Greenhouse
517
520
EN
M.
A.
Nawar,
Animal Pest Unit Plant Prot. Dept., Desert Res. Center
Iman
I.
Imam
Econ. Entomol. Unit Plant Prot. Dept., Desert Res. Center
10.21608/jppp.2017.46593
<em>Bemisia tabaci</em> Genn. (Hemiptera: Aleyrodidae) and <em>Tetranychus</em> <em>urticae</em> Koch. (Acari: Tetranychidae) are major pests infesting string bean, Green beans<em> Phaseolus vulgaris</em>, in greenhouses. The use of different release regimes of the two predators; <em>Chrysoperla</em> <em>carnea</em> (Steph.) (Neuroptera: Chrysopidae) and <em>Amblyseius swirskii</em> (Athias-Henriot) (Acari: phytoseiidae) was considered. The experimental desine included using either of <em>A. swirskii </em>or<em> C. carnea</em> solitary in sequential or combined release. Generally, the pests’ populations decreased compaired with the control plants as result of predators release. The percent reduction of <em>T. urticae</em> and<em> B. tabaci</em> increased gradually to reach its maximum values (over 90 %) for <em>T. urticae</em> and<em> B. tabaci, </em>respectively after 8 to 10 weeks of release over different release regimsThe present study indicated that the use of <em>A. swirskii </em>or<em> C. carnea </em>for controlling both <em>T. urticae </em>and <em>B. tabaci </em>on <em>P.</em> <em>vulgaris </em>reveled similar effeciency regardless they were used soliratily or in combination under green housae conditions. So using either of them as avilable natureal enemy can be recommended. <em> </em>
https://jppp.journals.ekb.eg/article_46593.html
https://jppp.journals.ekb.eg/article_46593_498a32967a84b996c26f76664d59b014.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Suppression of the Populaion of Two Spotted Spider Mite Tetranychus urticae (Koch) by Two Compost Tea Rice Straw and Farmyard Manure (Acari:Tetranychidae)
521
524
EN
Doaa
A.
Abou El Atta
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
10.21608/jppp.2017.46594
Experiment was conducted in a greenhouse to study the effect of two compost rice straw and farmyard manure against the spider mite, <em>Tetranychus urticae</em> (Koch) by three different methods of application spray, (spray+ added) and added to soil. Data showed that the highest reduction percentages of <em>T. urticae </em>was obtained by (R.W) spray the plant and added to soil (87.46%), while (Fym) spray and (Fym)spray and added to soil were equal in the reduction mortality which were 83.7% and 82.4%, respectively. The lowest reduction was achieved by (R.W) added to soil( 63.46%) . All treatments had significant differences in reducing <em>T. urticae</em> populations infesting on pepper between treatments and check after spraying.
https://jppp.journals.ekb.eg/article_46594.html
https://jppp.journals.ekb.eg/article_46594_6a2c97869c12ca07933da1d7159f1cea.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Bioinsecticidal Activity of some Compounds on the Cotton Leafworm, Spodoptera littoralis (Boisd.) under Laboratory Conditions.
525
528
EN
S.
S.
Awadalla
Economic Entomology Dept. Fac. Agric., Mansoura Univ.
G.
A.
El-Mezayyen
Cotton LeafwormDept.,Plant Protection Institute,Agric. Res.Center.
M.
H.
Bayoumy
Economic Entomology Dept. Fac. Agric., Mansoura Univ.
Nesreen
E.
EL-Mowafy
Cotton LeafwormDept.,Plant Protection Institute,Agric. Res.Center
10.21608/jppp.2017.46596
In a laboratory study investigated the changes in the metabolic products namely, total carbohydrates, total proteins and total lipids in the fourth larval instar of <em>Spodopter alittoralis</em>(Boisd.) tested with the LC<sub>50</sub> values. Compounds were one of plant growth regulator (Ethephon), emamectin benzoate (Highlex), chitin synthesis inhibitor (Novo),<em> Bacillus thuringiensis</em>( Protecto) and chlorpyrifos (Pestban) under laboratory conditions. Results indicated that, protecto showed the highest total carbohydrate content in the treated larvae (16.90 mg/g.b.wt.) than the other products followed by highlex, pestban, novo, and ethephon. The percentage of the change in the total carbohydrate content in the fourth larval instar treated with the LC<sub>50</sub> values recorded the highest decreasing percentage when treated larvae by plant growth regulator ethephon and represented by (-48.98%). Larvae exhibited the highest total protein content were treated with highlex (38.40mg/g.b.wt.) followed by pestban, protecto, novo then ethephon. Highest decreasing percentage of total protein content found in larvae treated with ethephon and represented by (-30.8%).Whereas the highest total lipids content was found in larvae treated with highlex (7.94 mg/g.b.wt.) followed by pestban, protecto, ethephon then novo.Highest decreasing percentage when treated larvae chitin synthesis inhibitor, (novo) and represented by (-18.60%).
Plant growth regulators,Total carbohydrates,Spodoptera littoralis
https://jppp.journals.ekb.eg/article_46596.html
https://jppp.journals.ekb.eg/article_46596_85e24d573788d6e0d36056a032ec3fbc.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
A Comparative Study of Three Plant Oils against Sitophilus oryzae (L.) and Tribolium castaneum (Herbst): Toxic and Antifeedant Effects
529
533
EN
S.
S.
Awadalla
Economic Entomology Department, Faculty of Agriculture, Mansoura University, Egypt.
G.
M.
Zayed
Plant Protection Research Institute, Sakha, Kafr El-Sheikh, Egypt
A.
S.
Hashem
Plant Protection Research Institute, Sakha, Kafr El-Sheikh, Egypt
10.21608/jppp.2017.46599
The aim of this study was to evaluate the effects of three essential oils extracted from <em>Matricaria chamomilla</em> flowers, <em>Pimpinella anisum</em> seeds and <em>Cuminum cyminum</em> seeds as biopesticide against <em>Sitophilus oryzae</em> (L.)and <em>Tribolium castaneum</em> (Herbst). Wherefore, the tested oils were obtained by steam distillation and evaporation of the selected plant parts and then treated at concentrations of 25000 and 50000 ppm.The weights of grains and insects were estimated before experiments taken place. After application, the mortality rates of insects, weight of grains and weight of a live insects were determined after four days. Concerning; toxic effects assay, LC<sub>50</sub> of the oil of <em>P. anisum </em>(LC<sub>50</sub> = 21534.82ppm) was the most potent toxicant, followed by C<em>. cyminum</em> (LC<sub>50</sub> = 108310.64 ppm), and M .chamomilla (LC<sub>50</sub> =148175.77 ppm) in case of <em>S. oryzae</em>.Also, in case of <em>T. castaneum</em>, the oil of <em>P. anisum </em>(LC<sub>50</sub> = 24079.99 ppm) was the most potent toxicant, followed by <em>C. cyminum </em>(LC<sub>50</sub> = 29980.19 ppm), and <em>M .chamomilla</em> (LC<sub>50</sub> = 55621.91 ppm).In nutritional indices assay, all the tested oils had negative effects on feeding activity of <em>S.oryzae</em> and <em>T. castaneum, </em>particularly with the highest concentration (50000 ppm) of all tested oils. Ultimately, the three tested oils showed effects (toxic and antifeedant) against both insect species. This study may suggest using of such essential oils as potential biopesticides to protect stored grains from infestation by the examined insects.
biopesticides,Essential oils,toxicity,Stored Grains,Nutritional Indices
https://jppp.journals.ekb.eg/article_46599.html
https://jppp.journals.ekb.eg/article_46599_a28ed1fea6d94fe52b550bc4fdd642c5.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
8
10
2017
10
01
Chemical Composition and Bioactivity of Three Plant Essential Oils against Tribolium castaneum (Herbst) and Sitophilus oryzae (L.)
535
539
EN
S.
S.
Awadalla
Economic Entomology Department, Faculty of Agriculture, Mansoura University, Egypt.
G.
M.
Zayed
Plant Protection Research Institute, Sakha, Kafr El-Sheikh, Egypt.
A.
S.
Hashem
Plant Protection Research Institute, Sakha, Kafr El-Sheikh, Egypt.
10.21608/jppp.2017.46601
Three essential oils extracted from German chamomile, <em>Matricaria chamomilla</em>, Anise, <em>Pimpinella anisum</em> and cumin, <em>Cuminum cyminum</em> were assessed against two of the major stored grain insect species, <em>Sitophilus oryzae</em> (L.) and <em>Tribolium castaneum</em> (Herbst). The chemical composition of the essential oils was determined by gas chromatography (GC) and GC/mass spectrometry. The bioactivity of the oils determined was assessed against both species. A concentration of 100000 ppm, essential oils caused 100% mortality of <em>S.oryzae</em> after 96 h. of exposure, whereas, <em>T. castaneum</em> were more tolerant to the oils than<em> S. oryzae</em>. At this concentration, the values of F<sub>1</sub> progeny production, progeny reduction (%) and grain weight loss (%) of both insect species were lower than other concentrations. Eventually, all oils exhibited a negative impact on some biological aspects of both insects. These results highlight the potential of these oils as grain protectants and antifeedants, and consequently could be suitable for the management of insect pests in grain stores.
Bioactivity,inhibitors,progeny production,tolerant
https://jppp.journals.ekb.eg/article_46601.html
https://jppp.journals.ekb.eg/article_46601_0318e802241a0967ac168fd4c729bef4.pdf