2024-03-29T14:53:07Z
https://jppp.journals.ekb.eg/?_action=export&rf=summon&issue=13120
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
TOXICITY AND BIOCHEMICAL EFFECT OF ORGANOPHOSPHATES AND BIOPESTICIDES AGAINST ROOT-KNOT NEMATODE, Meloidogyne incognita
Hoda
Nasr
This study was carried out to investigate the toxicity and biochemical effects of two (biopesticides) biofly, abamectin and two organophosphates pesticides cadusafos and fenitrothion against root-knot nematode, Meloidogyne incognita egg filtrates and second stage juveniles (J2) as well as on laboratory experiment, also the inhibitory effect of the tested pesticides to acetylcholenesterase (AChE) and adenosine triphosphatase (ATPase) were determined. Results indicated that the tested pesticides have toxic action against Meloidogyne incognita second-stage juveniles (J2) and egg filtrates after 24 hrs from application to 72 hrs and the toxicity increased with the time. Abamectin was the most toxic followed by ,fenitrothion cadusafos and biofly was least in its toxicity to M. incognita second stage juveniles (J2 )and egg filtrates while the toxicity was depending on dose. The tested pesticides have inhibitory effect on AChE and ATPase activity and the inhibitory effect increased with AChE in case of abamectin and cadusafos while the potency of the organophosphate pesticides to inhibit ATPase was limited refers to its mode of action
toxicity
Organophosphate
biopesticides
Meloidogyne incognita
.enzymes
2013
06
01
509
524
https://jppp.journals.ekb.eg/article_87400_1af1656a5117eebc4f7dd60264f1d9ce.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
RELATIONSHIP BETWEEN THE NUMBERS OF ADULT MALE CATCHES ON PHERMONE TRAPS AND PERCENTAGE OF BOLL INFESTATION FOR COTTON BOLLWORMS IN MIDDLE EGYPT.
H.
El-Kady
E.
Mohamed
E.
EL – Khayat
S.
Hosni
Under field conditions of Beni- Suef Governorate , field studies were carried out at the farm of Sids Agriculture Research Station during 2006, 2007 and 2008 cotton seasons to study the monitoring the first appearance and populations of adult males of both pink bollworm, Pectinophora gossypiella (Saunders) and spiny bollworm, Earais insulana (Boisd.) by using Delta pheromone baited traps.
The average number of male moths of P. gossypiella per trap / week during the period from April till September during the 2006, 2007 and 2008 cotton seasons, In the first season 2006, had five peaks of abundance in 5th May, 15th June, 14th July, 4th August and 8th September. In the second season 2007, also five peaks were observed. These peaks were occurred on 10th April, 24th April, 12th June, 24th July and 21st August. While in the third season 2008, four peaks were observed on 1st May, 29th May, 31st July and 4th September.
The average number of male moths of E. insulana per trap / week during the periods extending from March 17th till September 15th , March 27th till 4th September and April 3rd till September 18th during the 2006, 2007 and 2008 seasons, respectively. In the first season 2006, four peaks of spiny bollworm were observed in 21st April, 30th June, 11th August and 15th September. In the second season 2007, five peaks were observed in 24th April, 8th May, 12th June, 24th July and 28th August. While in the third season 2008, four peaks observed in 1st May, 31st July, 4th September and 18th September.
The combined effect of the two main weather factors on the changes in the population activity of the pink bollworm moths explained by the percentages of variance of the two tested weather factors were significant during 2006 and high significant during 2007 season , respectively but in 2008 season, was insignificant. The correlation between the spiny bollworm population and the weather factors Max. and Min. temperature and average relative humidity, it is obvious that a simple positive correlation coefficient between the average number of captured male moths in sex pheromone traps and max. temperature was found, but this correlation was insignificant during 2006 and 2007 seasons and significant 0.38 (P= 0.08) in 2008 growing season. The combined effect of the two main weather factors on the changes in the population activity of the spiny bollworm moths explained by the percentages of variance of the two tested weather factors which was significant during 2006, but in 2007 and 2008 planting seasons it was insignificant.
2013
06
01
525
543
https://jppp.journals.ekb.eg/article_87401_55d2216de8f0bcf63a27a9527b73ec04.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
SUSCEPTIBILITY OF SOME EGYPTIAN COTTON VARIETIES AND GENOTYPES TO BOLLWORMS INFESTATION
I.
Saad
M.
El-Samahy
A.
Sherif
Ten cotton varieties and genotypes, Giza 70, Giza 85, Giza 86, Giza 92, Alexandria 4, Bahteem 101, Karshensky 2, Pima S 6, Pima S 6 x G. 89 and Seuvin were evaluated for their relative resistance against chewing insect pests i.e., Pectinophora gossypiella (Sound.), Earias insulana (Boisd.) and Helicoverpa armigera (Hub.) in Egypt. The study was conducted at Sakha Agricultural Research Station, Kafr El-Sheikh, Egypt during the two successive seasons, 2011 and 2012. The results revealed that Karshensky 2, Giza 70 and Alexandria 4 were the most susceptible genotypes to infestation of green bolls by P. gossypiella and E. insulana, while Pima S 6 X G.89 was the most resistant one to both insects. On the other hand, Giza 92, Bahteem 101, Giza 86, Seuvin and Pima S 6 X G.89 were significantly resistant genotypes to infestation of green bolls by H. armigera during 2011 and 2012 seasons. A negative relationship between concentration of gossypol and ratio of infestation by insects was observed, this means the importance of gossypol concentration for reduction of the infestation by insects.
2013
06
01
545
552
https://jppp.journals.ekb.eg/article_87402_57b2f483cd96e0e9a05fd856e092af9b.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
اختبار حيوية وإمراضية عزلات من الفطريات المحفوظة في التربة
أمينة
القمودي
عيسى
فرج
عصام الدين
الوحيدي
هدفت هذه الدراسة لاختبار حيوية 28 عزلة من الفطريات المحفوظة باستخدام التربة المعقمة بالبخار الجاف، وکذلک اختبار القدرة الإمراضية لهذه العزلات، ومقارنة تأثير طرق الحفظ المختلفة على حيوية هذه العزلات. وقد أظهرت نتائج اختبار الحيوية أن من أصل 28 عينة فطرية محفوظة في تربة معقمة، تم استعادة نمو عدد (8) عزلات فطرية فقط وتتضمن: 7 فطريات تابعة للفطريات الناقصة (Deuteromycota)، وفطر واحد (1) يتبع الفطريات الأسکية ( Ascomycota). أوضحت نتائج اختبارات الإمراضية على العينات الفطرية الثمانية عند اختبارها على عوائل مناسبة لها، أن نسبة الإصابة بهذه العزلات تراوحت ما بين (24 % - 100 %). وقد تم إعادة حفظ الفطريات الثمانية وذلک باستخدام طرق (النقل الدوري المستمر والتخزين تحت الزيت المعدني). هذه الدراسة تساهم في تأسيس نواة لتوفير وحفظ المجموعات الفطرية بقسم وقاية النبات بکلية الزراعة جامعة الفاتح – طرابلس - ليبيا.
فطريات
حفظ في التربة
اختبارات حيوية
إختبارات القدرة الإمراضية
2013
06
01
553
560
https://jppp.journals.ekb.eg/article_87403_963e03f3c05ec03487ee5660cc954ce7.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
SUSCEPTIBILITY OF 13 OKRA GENOTYPES TO INFESTATION WITH SOME PESTS AS CORRELATED TO LEAF MORPHOLOGY
Eftkhar
Abou Hatab
Soher
Elgendy
The present research work aimed to differentiate between thirteen okra genotypes from the point of its susceptibility to infestation by some sucking pests(Empoasca discipiens (Paoli) , ,Aphis gossypii (Glover);,Bemisia tabaci (Genn.),Tetranychus urticae (Koch) and, Liromyaza trifolii (Burg)) during two summer plantation 2010 and 2011. Results clearly indicated that there was significantly positive correlation between the number of hairs on leaf lamina and population of whiteflies (r= +0.944**) and mites (r=+ 0.983**). Hairiness of the leaves influences the population of aphids, leaf miner, whiteflies, mite and leafhopper populations to the extent of 82,85.,89, 94 and97 per cent, respectively. There was significantly negative correlation between pest population and mid-vein hair density for, leaf miner(r =-0.928**) , aphids (r= -0.938**) and leafhopper (r= -0.985**), thus it appears to be an important factor in imparting biophysical resistance in okra against these pests. Whereas, significantly positive correlation was observed between population of whitefly, mite, and mid-vein hair density (r= +0.967**and+0.968**) favoring to the whitefly and mite population buildup. Influence of mid-vein hair density on different sucking pests population e.g., leaf miner, aphids, , whiteflies, mite and leafhoppers was to the extent of 80, 89, 94,97 and 98 per cent, respectively. Overall impact of midrib thickness on the population of some pests e.g., whiteflies, aphids, leaf miner , mite and leafhoppers was to the extent of 64,72,75, 80and 88 per cent, respectively . However, from the present study on interactions of okra genotypes against some sucking pests, it can be concluded that the genotypes Balady(B),Mansoura Red (HM), are susceptible for (aphids, mites, whitefly,leaf miner and leafhopper, respectively). While genotypes Roomy (R), Str.L1, Str.L3, Str.L4, Str.L6 and Str.L8 were considered as moderate. In the mean time, Str.L9, Str.L5, Cairo Red (HK(,Str.L6 and Str.L7, are resistant against (aphids, mites, whitefly,leaf miner and leafhopper, respectively) and can be recommended for cultivation in areas where high incidence of these pests are noticed.
okra
Pests
genotypes
susceptibility
resistance
morphological characters
2013
06
01
561
570
https://jppp.journals.ekb.eg/article_87404_396a3e352e40168e4184b4795772fe76.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
EFFICIENCY OF SOME CONVENTIONAL AND NON-CONVENTIONAL INSECTICIDES ON THE MAIN INSECT PESTS ATTACKING FABA BEAN PLANTS
S.
Awadalla
F.
Abdallah
Nora
El-Mashaly
The present study was carried out at the experimental farm of Sakha Agricultural Research Station, Kafr El-Sheikh Governorate during two successive seasons, 2011/12 and 2012/13 to evaluate the influence of some conventional (Malathion extra or Max Sped) and non-conventional insecticides on the main insect pests attacking faba bean plants.
The conventional insecticide Malathion-Extra exhibited a high efficiency against Aphis craccivora (Koch.) population with the highest average percentage of reduction (86.26 ±7.64 % and 94.34±2.85 %) followed by Capel 2 (72.13 ±6.20 % and 79.69±5.75 %) during the two seasons; 2011/12 and 2012/13, respectively.
The conventional insecticide Malathion-Extra exhibited a high efficiency against Empoasca spp. population with the highest average percentage of reduction (51.52±11.19 % and 58.83±5.45 %) followed by Capel 2 (40.88±10.14% and 54.09±7.50 %) during the two seasons, respectively.
The conventional insecticide Max Sped exhibited a high efficiency against Liriomyza trifolii (Burgess) larval population with the highest average percentage of reduction (75.97±10.52 % and 67.25±13.94 %) followed by Capel 2 in the first season (75.63± 4.19 %) and Bioguard in the second one (57.10±12.15%).
The statistical analysis revealed significant differences among average percentages of reduction of aforementioned insect pests and the used compounds during the two successive seasons.
2013
06
01
571
580
https://jppp.journals.ekb.eg/article_87405_6389f809914fd724e44e71cb47dee033.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
INFLUENCE OF SOME VARIETIES ON THE MAIN INSECT PESTS ATTACKING FABA BEAN PLANTS
S.
Awadalla
F.
Abdallah
Nora
El-Mashaly
The present experiments were carried out at the experimental farm of Sakha Agricultural Research Station, Kafr El-Sheikh Governorate during two successive seasons; 2011/12 and 2012/13 to study the susceptibility of some varieties on the main insect pests attacking faba bean plants.
The highest average number of Aphis craccivora (Koch.) was recorded on Sakha 4 variety which had the highest of total Carbohydrate (51.58%) and the lowest of total Phenole (0.528%) with an average number of 287.14±80.53 and 171.56±35.63 indiv./20 plants followed by Sakha 2 variety (233.00±91.53 and 134.67±39.50 indiv./20 plants) during the two successive seasons, 2011/12 and 2012/13, respectively.
The highest average number of Empoasca spp. was recorded on Giza 3 variety which had high crude Protein (18.91%) with an average number of 70.00±8.71 and 116.92±18.73 indiv./ 100 leaflets followed by Sakha 4 in the first season (63.42±15.47 indiv./ 100 leaflets) and Giza 843 variety in the second one (110.92±15.78 indiv./ 100 leaflets).
The highest average number of Nezara viridula L. was recorded on Sakha4 in the first season (total Carbohydrate, 51.58%) and Giza 3 in the second one (crude Protein, 18.91%) with an average number of 4.57±1.44 and 7.00±0.47 indiv./20 plants during the two seasons, respectively. Statistical analysis revealed insignificant differences among faba bean varieties during the two seasons of study.
The highest average number of Liriomyza trifolii (Burgess) was recorded on Giza3 variety which had high C. protein (18.91%) and low Silica (1.54%) with average number of 157.6±3.4 and 201.5±64.65 larvae/ 100 leaflets followed by Sakha 3 and Sakha 1 variety (156.00±5.5 and 198.6±51.14 larvae/ 100 leaflets) during the successive seasons, respectively.
Statistical analysis revealed significant differences among faba bean varieties and the average number of A. craccivora, Empoasca spp. and L. trifolii during the two seasons of study.
The results showed insignificantly or significantly positive relationship among varieties contents from C. protein, T. lipids and T. phenole with Empoasca spp., N. viridula and L. trifolii while was negative relationship with T. carbohydrate and silica. In contrary, the results showed that significantly positive relationship among varieties contents from T. carbohydrate and silica with A. craccivora while was significantly negative relationship with C. protein, T. lipids and T. phenole.
2013
06
01
581
589
https://jppp.journals.ekb.eg/article_87406_ace20b535507d54bef96ee8fdd53a877.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
6
SUPRESSION OF PODWERY MILDEW ON FLAX BY FOLIAR APPLICATION OF FUNGICIDES
A.
Aly
M.
Omar
M.
Hussein
A two-year field study was conducted at El-Ismailiya Agricultural Research Station to evaluate the fungicides Bellis and Micronized Sulphur, applied as foliar sprays, for control of powdery mildew on six flax cultivars (Giza 9, Giza 10, Sakha 3, Sakha 4, Istro, and Jiteka) with varying levels of susceptibility to the disease. Disease severity, agronomic traits, and technological traits were used as criteria for evaluating the performance of the tested fungicides. Bellis and sulphur were effective in controlling the disease (reducing the disease severity) in 2011 and 2012 on all the tested cultivars; however, efficiency of the fungicides (magnitude of reduction in the disease severity) in controlling the disease differed from one cultivar to another and from year to year. Bellis did not contribute to significant increases in many agronomic and technological traits of the tested cultivars in 2011 and 2012, while sulphur significantly improved, with few exceptions, almost all the tested traits. In conclusion, the present study demonstrated that both Bellis and sulphur were effective in reducing the disease severity; however, sulphur surpassed Bellis in improving agronomic and technological traits. Therefore, sulphur is better choice than Bellis for controlling the disease.
Flax (Linum usitatissimum L.) cultivars
powdery mildew (Oidium lini Ŝkoric)
fungicides
disease severity
2013
06
01
591
601
https://jppp.journals.ekb.eg/article_87407_39c2f4bf621edad749cd66e51ad2b064.pdf