eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
1
16
10.21608/eajbsf.2019.25084
25084
المقالة الأصلیة
Alleviation of Lead-Induced Immunotoxicity by Moringa oleifera in Albino Rats
Rania Elgawish
reemshab@gmail.com
1
Haidy Abdel-Rahman
2
Seham Helmy
3
Doaa Kabil
4
Heba Abdelrazek
5
Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
Department of Clinical Pathology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
Department of Cytology and Histology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt/Female College of Applied Medical Sciences, University of Bisha, Saudi Arabia
Department of Home Economics, Nutrition and Food Science Branch, Faculty of Specific Education, Tanta University, Tanta, Egypt
Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
The existing study was designed to evaluate the ameliorative influences of Moringa oleifera on several immune parameters in male rats subsequent to lead administration. Twenty eight adult male rats were randomly assigned equally into 4 groups; control group was given distilled water. Lead treated rats were administrated a dose of 44 mg of lead acetate/kg BW. Moringa group was treated with 50 mg/ kg BW of Moringa oleifera leaf extract. Lead and moringa treated group was given a dose of 44 mg/kg of lead acetate and 50 mg/ kg of moringa extract. Treatments were given orally by gavage tube for one month. By the termination of the experimental period, rats were immolated; spleen and thymus weights were recorded in addition to the collection of blood and tissue samples. Tumor necrosis factor alpha (TNF-α), interferon gamma (IF-γ), interlukin-2 (IL-2) and total antioxidant capacity (TAC) were assayed in serum. Complete blood picture was evaluated for rats. Body weight gain was reduced significantly (P<0.05) in lead and moringa treated rats in comparison to control. A significant (P<0.05) increase in spleen weights was observed in lead and moringa co-administered group compared to moringa treated group. Lead administration produced higher (P<0.001) levels of TNF-α, IL-2 and IF-γ compared to that in other groups. In contrary, the level of TAC was significantly (P<0.001) reduced in lead treated rats. A significant (P<0.01) reduction in RBCs and low level of hemoglobin (P=0.07) were observed in lead-treated rats. Spleen of rats receiving lead showed widespread hyperplasia of lymphoid follicles in white pulp and hemosiderin pigment in red pulp. Thymus of rats receiving lead showed marked proliferation in the cortical region. Spleen and thymus of rats receiving lead showed a higher (P<0.01) immune reactivity for NF-κB and CD8+ parallel to that in other groups. In conclusion, the administration of Moringa oleifera extract ameliorates the immunotoxicity induced by lead exposure in rats.
https://eajbsf.journals.ekb.eg/article_25084_69155ebee8228b40b1c0697fa64eed83.pdf
Rats
Lead
Moringa
immunity
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
17
25
10.21608/eajbsf.2019.26440
26440
المقالة الأصلیة
Management of Pests Attacking Tomato, Lycopersicon esculentum (Mill.) Plants and their Relationship with Actual Yield Under the Greenhouse.
Abla Saad
ablafawzy@hotmail.com
1
Plant Protection Research Institute, ARC, Dokki, Giza, Egypt
Experiments were conducted in the experimental Horticulture Research Station in Qaha city, Qalubiya Governorate under greenhouse conditions during two successive seasons (2016-2017 and 2017-2018). The study aims for managing of pests attacking tomato, Lycopersicon esculentum (Mill.) plants and their relationship with product yield, by using insecticides, orange oil and mineral oil alone and in binary mixtures, their relationship with crop yield under the greenhouse. Bemisia tabaci (Genn.), Tuta absoluta (Meyrick) and Tetranychus urticae (Koch) were the most important pests found on a tomato plant. These pests are causing great losses in tomato yield. Results showed that using Actara binary mixtures with mineral oil or orange oil binary mixtures with mineral oil have a highly significant effect on decreasing pests population infesting tomato plants and improving actual yield. The insecticide binary mixtures with mineral oil have an effect on population pests whereas decreased the mean number of pests and were the most efficient method compared to without treatment area.
https://eajbsf.journals.ekb.eg/article_26440_24748cea9987643fc292d96daf582b87.pdf
greenhouse
Tomato
Lycopersicon esculentum
Insecticides
Orange oil
mineral oil
binary mixtures
Bemisia tabaci
Tuta absoluta
Tetranychus urticae and product yield
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
27
38
10.21608/eajbsf.2019.27331
27331
المقالة الأصلیة
Toxicity of some Essential oils and its Biochemical Effect against Red Flour Beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
El-Gizawy Kh.
karam.elgizawy@fagr.bu.edu.eg
1
Halawa M.
2
Mehany L.
3
Mohamed A.
4
Plant Protection Dept., Fac. of Agric. Moshtohor, Benha Univ., Egypt
Plant Protection Dept., Fac. of Agric. Moshtohor, Benha Uni., Egypt.
Plant Research Dept., Nuclear Research Center, Atomic Energy Authority, Abozaabal, Egypt
Plant Research Dept., Nuclear Research Center, Atomic Energy Authority, Abozaabal, Egypt
Fumigant activities for four essential oils; Garlic oil (Allium sativumL); Basil oil(Ocimum basilicum); Pine (Pinus longifolia L.) and Eucalyptus (Eucalyptus oblique L.) at different concentrations after 1, 2, 3, 5 and 7 days at 28±1° C were tested against 4th instar larvae and adults of the red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) in the laboratory. The results showed that mortality increased with increasing oil concentration and time of exposure, also the higher essential oils toxicity at the LC50 after 7 days post-treatment was Garlic oil. Effects of Garlic essential oils on some enzymes activity in 4th instars’ larvae of T. castaneum were investigated. From this study, we conclude that these essential oils have a potential for applications in IPM programs for stored-grain pests because of its high volatility and fumigant activity.
https://eajbsf.journals.ekb.eg/article_27331_b538fb650b9d379ae2ae5a43800ff0e8.pdf
toxicity
Essential oils
biochemical effect
Tribolium castaneum
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
39
49
10.21608/eajbsf.2019.28797
28797
المقالة الأصلیة
Biological Control of Duranta Aphid, Aphis durantae Theobald by Release Coccinella septempunctata L. on Duranta Plants under Glasshouse Conditions
Emam S.
dr.ashrafsalah@yahoo.com
1
Samia Yassin
2
Faragalla H.
3
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
This study was carried out to evaluate the management of Duranta aphid Aphis durantae Theobald (Homoptera: Aphididae) which infesting duranta plantsby releasing different levels of the seven- spotted lady beetle, Coccinella septempunctata L. (Coleoptera: Coccinellidae).
This study was carried out at two locations (Governorates), The International Garden, Cairo Governorate and El-Orman Garden, Giza Governorate during successive season 2018 under glasshouse conditions.
The seven- spotted lady beetle, C. septempunctata was released for one time at early February on durantaplants at the two locations at rates of 30, 60 and 90 eggs/plant. In the first level of release (30 eggs/plant), at Cairo Governorate the reduction percentages in the population ofDuranta aphid, A. durantae increased gradually whereas it were 24.0, 34.4, 44.6, 57.1 and 66.6% on mid-February, first-March, mid-March, first-April and mid-April, respectively. The same trend was achieved at Giza Governorate. Also, in the second level of release (60 eggs/plant), at Cairo Governorate the reduction percentages in the population of A. durantae increased gradually whereas it were 27.1, 40.2, 50.3, 60.0 and 69.7% on mid-February, first-March, mid-March, first-April and mid-April, respectively. The same trend was achieved at Giza Governorate. Lastly, the third level of release (90 eggs/plant), at Cairo Governorate the reduction percentages in the population of A. durantae increased gradually whereas it were 31.3, 46.0, 58.7, 68.3 and 74.1% on mid-February, first-March, mid-March, first-April and mid-April, respectively. In addition, the same trend was achieved at Giza Governorate.
https://eajbsf.journals.ekb.eg/article_28797_c06781e7a4c877486a362bbdbe8379ab.pdf
biological control
Duranta aphid
Coccinella septempunctata L
glasshouse conditions
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
51
64
10.21608/eajbsf.2019.28798
28798
المقالة الأصلیة
Antioxidant Activity and Biological Studies of Two Medicinal Plant Extracts on Spodoptera littoralis (Boisd)
Mona Wahba
nm.shahde@yahoo.com
1
Hanan Gaballa
hanansaid2010@yahoo.com
2
Plant Protection Research Institute, Agricultural Research Center, Dokki 12613, Giza, Egypt
Biochemistry Department, Faculty of Agricultural, Cairo University, Giza 12613, Egypt.
Control management of Spodoptera littoralis (Boisd) infestation has been achieved by using chemical insecticides. However, the environment-friendly methods without unwanted side effects of these chemicals are becoming very important in modern pest management strategies. Natural products including plant ethanolic extracts and essential oils are some of the alternative approaches in pest control. The essential oils were extracted and their chemical composition was identified using a GC/MS spectrometer. Therefore, the present study was designed to evaluate the antioxidant activity of various extracts of sage and thyme plants by 2, 2-diphenyl-1-picrylhydrazil (DPPH) method. The obtained results revealed that concentrations at 25, 50, 100 and 200µg/ml of essential oils and ethanolic extract from both plants were more efficient in scavenging free radicals after 30 min when compared with butyl hydroxyl toluene(BHT) as synthetic standard. The concentrations 100 and 200µg/mL from ethanolic and essential oils were having higher activity than other extracts and standard .Furthermore, Sage and thyme extracts were investigated for their toxicity against cotton leafworm, S. littoralis in the laboratory, the percentages of cumulative mortality of larvae as well as the latent effects of the 4th instar of S. littoralis four concentrations (25, 50, 100 and 200 µg/mL) were applied. It was found that ethanolic extract of two plants was more efficient than essential oils on different stages of S. littoralis. The results showed that there were highly significant differences between all treatments and control some biological aspects.
https://eajbsf.journals.ekb.eg/article_28798_20b2c1b28cb4fde6efa9a815034bdffc.pdf
S. officinalis
T.vulgaris
Spodoptera littoralis
essential oil
Phenolic compounds
chemical compositions
Antioxidant activity
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
65
73
10.21608/eajbsf.2019.29343
29343
المقالة الأصلیة
Biological Activity of Prunus Domestica (Rosaceae) and Rhamnus Cathartica (Rhamnaceae) leaves extracts against the Mosquito Vector, Culex Pipiens L. (Diptera: Culicidae)
Ahmed Shehata
ahmed.ibrahem84@azhar.edu.eg
1
Department of Zoology, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11651, Egypt
The activity of methanol, chloroform and petroleum ether extracts of Prunus domestica and Rhamnus cathartica leaves against third-instar larvae of the filarial vector, Culex pipiens (Diptera: Culicidae) and resulted pupae were evaluated. In addition, the repellent activity of tested extracts against C. pipiens starved females was determined. Results showed that all tested extracts possess larvicidal activity against C. pipiens third larval instar; however, the petroleum ether extract from leaves of P. domestica and R. cathartica was more effective (LC50 33.3 and 63.4ppm) than chloroform (LC50 70.8 and 192.1ppm) and methanolic extracts (LC50 132.7 and 273.5ppm), respectively. Also, both larval and pupal periods were prolonged by all tested extracts as compared with control groups. On the other hand, all tested extracts exhibited a variable degree of repellency against C. pipiens starved females depending on dose and solvent used in extraction. The highest repellency (97.3 and 90.2%) was recorded by petroleum ether extract of P. domestica at the highest doses (3.33 and 5.0mg/cm2), while petroleum ether extract of R. cathartica recorded 89.8 and 80.0% repellency at the same doses, respectively. These results proved that methanol, chloroform and petroleum ether extracts of P. domestica and R. cathartica leaves act as C. pipiens control agents, even in the crude form, providing an opportunity to reach ,mosquito control agents from cheap, available plants which are safe to non-target organisms, as well as environment.
https://eajbsf.journals.ekb.eg/article_29343_26d23a4eb3afe6f60c091b85a12a4426.pdf
larvicidal
repellent
Culex pipiens
Prunus domestica
Rhamnus cathartica
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
75
86
10.21608/eajbsf.2019.29345
29345
المقالة الأصلیة
Disturbing Effects of the Chitin Synthesis Inhibitors, Novaluron and Diofenolan, on the Phosphatase Activity in the Pink Bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae).
Tanani A.
tanani484@gmail.com
1
Bakr A.
2
Department of Zoology and Entomology, Faculty of Science, Al-Azhar University, Madenit Nasr, Cairo, Egypt.
Department of Zoology and Entomology, Faculty of Science, Al-Azhar University, Madenit Nasr, Cairo, Egypt.
The pink bollworm Pectinophora gossypiella is one of the most destructive insects attacking cotton fields worldwide. It acquired resistance against most of the conventional pesticides. Therefore, the present study was carried out aiming at the investigation of disturbing effects of Novaluron (LC50: 0.765 ppm) and Diofenolan (LC50: 0.036 ppm) on the phosphatase activity in homogenates of larvae (6 hr post-treatment) as well as in early- aged pupae (1-day old), mid-aged pupae (3-day old) and late-aged pupae (7-day old), after treatment of full-grown larvae. After treatment with Novaluron and Diofenolan, both compounds enhanced the larvae to attain remarkably elevated acid phosphatase activity (ACP). In the pupae, ACP activity was predominantly promoted by both compounds, regardless the age. The Alkaline phosphatase(ALP) activity was tremendously declined in the treated larvae. Novaluron enhanced pupae to gain slightly or considerably increasing activity, regardless the age. On the other hand, Diofenolan exhibited a diverse effect since the enzyme activity was pronouncedly declinedin the early-aged pupae but remarkably enhanced in the mid- and late-aged pupae.
https://eajbsf.journals.ekb.eg/article_29345_e5712d2a23cb5869d0e9eed05ba82600.pdf
Enhancement
Enzyme
larva
prohibition
promotion
pupa
Reduction
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
87
96
10.21608/eajbsf.2019.29347
29347
المقالة الأصلیة
Efficiency of the Gamma Irradiation in Controlling the Red Flour Beetles, Tribolium castaneum Herbst, and Preventing Its Secondary Infestations
Thanaa Sileem
thanaasileem@yahoo.com
1
Samia Mohamed
2
Eman Mahmoud
3
Biological Application Department-Nuclear Research Center-Atomic Energy Authority. P.O.Box 13759, Abo-Zaabal, Egypt
Biological Application Department-Nuclear Research Center-Atomic Energy Authority. P.O.Box 13759, Abo-Zaabal, Egypt
Biological Application Department-Nuclear Research Center-Atomic Energy Authority. P.O.Box 13759, Abo-Zaabal, Egypt
The present study was carried out to investigate the effect of different doses of gamma irradiation (0, 50,100,500 and 1000 Gy) on the mortality percentage of both of larvae and adult stages of the red flour beetle, Tribolium castaneum Herbst. (Coleoptera- Tenebrionidae). Also, the effect of gamma irradiation on both of the Quinones secretion and the microflora associated with the pest stages was investigated. The results showed that the incremental of adult and larval mortality percentages were significant (P <0.05) affected by an increment of gamma irradiation dose. The results of Gas chromatography-mass spectrometry patterns exhibited a strong inhibitory effect of irradiation on Quinones secreted by both stages. The used doses succeed in reducing the count of microflora were associated with both larval and adult stages. This reduction reached zero for fungi and bacteria isolated from the surface at the dose 1000 Gy. Obtained data suggested that the irradiation of red flour beetles with 1000 Gy is a promising tool for the control of this destructive pest and prevent its harmful effects associated with its infestation.
https://eajbsf.journals.ekb.eg/article_29347_0f6076a94696622e3bb95b087a6b5800.pdf
Gamma Irradiation
insect’s microflora
secreted quinones
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
97
103
10.21608/eajbsf.2019.29798
29798
المقالة الأصلیة
Non-chemical Approaches Suppressed Damage and Oviposition Rate of Date Palm Hopper, Ommatissus lybicus
Somayyeh Tofangdar
tofangdar2011@yahoo.com
1
Majeed Seyahooei
2
Abdoolnabi Bagheri
nabibagheri53@gmail.com
3
Agricultural Jihad of Mohr (Varavi Division), Agricultural Organization of Fars province, Iran.
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
Chemical application is the most common practice widely used against date palm hopper (DPH), Ommatissus lybicus de Bergevin (Hem.: Tropiduchidae). Herein, we studied the efficiency of non-chemical approaches in suppressing DPH damage in the field condition. The study was carried out in a Randomized Complete Block design (RCB) with eight treatments, spraying micronized Kaolin (5% SP); Volck oil (1.5% EC); Citogate oil (1.5% EC); coconut oil soap (1.5% EC); yellow cards (six cards per 10 mature leaves and four cards per10 mature leaves); Diazinon (60% EC) and control, replicated three times. Results revealed that all treatments caused a sharp decrease in population of DPH (both adults and nymphs) up to the end of the third week and Diazinon was the most influential treatment (F = 623.92; df = 7; P <0.01, F = 367.71; df = 7; P <0.01, F = 121.11; df = 7; P <0.01 for the first, second and third week after the experiment, respectively). This result was also confirmed by a decrease in the number of eggs laid by females DPH (F= 53.89; d.f=7; P< 0.01). All treatments significantly diminished the egg laying of DPH compared with control. The two of non-chemical treatments, Kaolin and coconut oil soap showed high efficiency in decreasing population of DPH without destructive effects on the environment, we can suggest these two eco-friendly products be used safely against Dubas bug. In addition, kaolin may contribute in decreasing the sunburn effects which is suggested to be studied by further research.
https://eajbsf.journals.ekb.eg/article_29798_7c69d5cb0c8f79527e5fac63caba464d.pdf
Dubas bug
kaolin
coconut oil soap
Volck oil
Citogate oil
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
105
22
10.21608/eajbsf.2019.31759
31759
المقالة الأصلیة
Genome-wide DNA Mutability and Biochemical Effects of Novel Insecticides in the Control of Date Palm Fruit Pest Ephestia cautella (Walker)
Fouad Ahmed
1
Mohamed Rashed
2
Hala Abou-Yousf
3
Emam Abdel-Rahim
4
Shaimaa Mahdi
5
Gamal Osman
geosman@uqu.edu.sa
6
Mohamed Atia
matia@ageri.sci.eg
7
Biochemistry Department, Faculty of Agricultural, Cairo University, Egypt
Biochemistry Department, Faculty of Agricultural, Cairo University, Egypt
BioassayDepartment, Central Agricultural Pesticide Laboratory (CAPL), Agriculture Research Center (ARC). Egypt
Biochemistry Department, Faculty of Agricultural, Cairo University, Egypt
BioassayDepartment, Central Agricultural Pesticide Laboratory (CAPL), Agriculture Research Center (ARC). Egypt.
-Biology Department, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, 21955, PO Box 715, Saudi Arabia. - Microbial Genetics Lab., Agriculture Genetic Engineering Research Institute (AGERI), Agriculture Research Center (ARC). Egypt.
Molecular Genetics and Genome Mapping Lab., Agriculture Genetic Engineering Research Institute (AGERI), Agriculture Research Center (ARC). Egypt
Different pests attack date palm fruits during all the stages of maturity. Almond moth (Ephestia cautella) is a destructive insect of stored products, such as dates, wheat flour, and nuts. In the present study, the usage of novel groups of insecticides (Spinosyns, Diamide, Pyridalyl, and Azadirachtin) that are safe for humans and exert a relatively lower effect on the environment was assessed. In particular, the toxicological and biochemical impacts of five insecticides (Tracer, Radiant, Coragen, Pleo, and Achook) on the control of E. Cautella were evaluated, and the genome-wide DNA mutability caused by these insecticides was screened. A bioassay was performed in order to determine the LC50value for each insecticide, the results of which revealed that Coragen with an LC50 value of 0.49 ppm was the most potent insecticide, followed by Radiant and Achook (with LC50 values of 1.51 and 1.73 ppm, respectively). In addition, the effect of these insecticides on vital enzymes was investigated. The data from this investigation revealed that the treatment with Radiant demonstrated stimulation in AST, ACP, ALP, and GST activity, and inhibition in AChE, ALT, and protease activity. The insects treated with Coragen exhibited an elevation in the activities of AChE, GST, ALP, ACP, ALT, and protease. Finally, DNA-level mutability caused by the insecticides was assessed by using RAPD-PCR analysis, and the results indicated Radiant as a genotoxic insecticide that caused large changes at the genomic-DNA level. On the other hand, Coragen exhibited the lowest mutability effect on insect DNA.
https://eajbsf.journals.ekb.eg/article_31759_123f67d5abcfcc6a2ba09d7ab64b3226.pdf
Toxicological
Ephestia cautella. Insecticides. RAPD. Date palm
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
2090-0791
2090-0864
2019-01-01
11
1
123
129
10.21608/eajbsf.2019.31760
31760
المقالة الأصلیة
Trunk Injection a Promising Approach for Long-Lasting Suppression of Mango Leaf Hopper, Idioscopus clypealis
Majeed Seyahooei
1
Abdoolnabi Bagheri
nabibagheri53@gmail.com
2
Sohrab Morshedi
omid_torktabar@yahoo.com
3
Majid Fallahzadeh
mfalahm@yahoo.com
4
Sareh Amiri
sarehamiri359@gmail.com
5
Maryam Shahi
meri_shahi@yahoo.com
6
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
Department of Entomology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
Department of Entomology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
Plant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Bandar Abbas, Iran.
The current study was conducted to investigate strength and durability of the effect of three widely used insecticides against mango leafhopper (MLH), Idioscopus clypealis (Lethierry) (Hemiptera: Cicadellidae) in two different methods (foliar spray and trunk injection) in Roodan district (Hormozgan province). The study was performed as factorial arranged in a Randomized Complete Block design (RCB). In all sampling sessions (3, 7, 15 and 30 d post applications), the number of nymphs decreased significantly on the inflorescence, indicating insecticides used in both methods were able to suppress MLH, relatively. Although the insecticides showed no significant difference in foliar application, they were significantly different when injected through the trunk (F=8.85; df=2; P<0.01). Also, significant difference was found among different sampling times (F = 85.0; df = 3; P<0.01). By comparing various sampling sessions, the highest mortality rate was observed at day 30 (74.8 ± 2.31%) and the lowest ones occurred on day 3 (23.9 ± 4.06%). Over time, the percent of the insect mortality increased. The highest rate of mortality was observed in Dimetoat through injection method (57.2 ± 5.89%) and the lowest occurred in Acetamiprid by the same method (33.8 ± 7.37%). By these results and considering high susceptibility of mango to foliar application of chemicals at flowering stage, trunk injection of appropriate pesticides can be a promising approach to suppress MLH and probably other common mango pests present and damage at that stage like gall midge.
https://eajbsf.journals.ekb.eg/article_31760_8517172fa5c4b576c7eba4b06dc80628.pdf
chemical control
dimethoate
foliar spray
Injection method
Mango leafhopper