ORIGINAL_ARTICLE
INFLUENCE OF DIFFERENT HOST PLANTS ON THE BIOLOGICAL CHARACTERISTICS OF THE SEYCHELLARUM MEALYBUG Icerya seychellarum (WESTWOOD).
Laboratory experiments were carried out to study the influence of different host plants on some biological characteristics of I. seychellarum .The experiments were conducted in the Insectary of the Economic Entomology Department, Faculty of Agriculture, MansouraUniversity under fluctuated temperature degrees of 28±1˚c ; 20±1˚c and 60±5% R.H.
The total developmental stages were the shortest when I. seychellarum reared on ornamental palm and represented by 40.1 ± 0.71 and 54.9 ± 1.61 days under fluctuated temperature of 28 ± 1 ˚c and 20 ± 1˚c respectively.
The survival rates during the nymphal stage of I. seychellarum was the highest on ornamental palm followed by persimmon and the lowest on mango and guava . Based on the survival rate as an index of suitability of different host plants , the suitability in decreasing order was : on ornamental palm, persimmon, ficus, loquat, guava, mango under fluctuated temperature of 28 ± 1 ˚c and 20 ± 1˚c .
The longest oviposition period , the adult longevity and the highest fecundity of adult females were reared on ornamental palm ( 21.6 ± 0.41 , 52.7 ± 0.50 days and 63.1 ± 0.71 eggs/female )respectively ,under fluctuated temperature of 28 ± 1 ˚c . On the other hand , the longest oviposition period , the adult longevity and the highest fecundity of adult females when reared on ornamental palm ( 30.8 ± 0.91 , 71.8 ± 0.29 days and 51.7 ± 0.38 eggs/female )respectively , under fluctuated temperature of 20 ± 1˚c.
https://jppp.journals.ekb.eg/article_53232_dda876499f5dc72f96902ed65efbef93.pdf
2015-02-01
245
254
10.21608/jppp.2015.53232
S.
Awadalla
1
Economic Entomology Department, Faculty of Agriculture, Mansoura Univ.
AUTHOR
H.
Fathy
2
Economic Entomology Department, Faculty of Agriculture, Mansoura Univ.
AUTHOR
A.
Abdel-Salam
3
Economic Entomology Department, Faculty of Agriculture, Mansoura Univ.
AUTHOR
M.
Mayoof
4
Economic Entomology Department, Faculty of Agriculture, Mansoura Univ.
AUTHOR
ORIGINAL_ARTICLE
STUDIES ON ACTIVITY OF HONEYBEE IN COLLECTING AND STORING POLLEN GRAINS DURING SPRING AND SUMMER SEASONS
Foraging activity of the honeybee (Apis mellifera L.) in pollen collection were studied during spring and summer, 2012. The quantity and quality of the collected pollen were investigated.
The obtained results showed that over spring and summer seasons, the highest amount of trapped pollen (240.07 gram/colony/week) were recorded on August, when temperature was 35.02◦ C and relative humidity was 52%, however the lowest amount (13.38 gram/colony/week) was in April with temperature of 25.42◦ C and relative humidity 51%.
Concerning foraging activity of the experimental bees over the day, the results showed that the highest amounts of trapped pollen was recorded in the period between 10-12 a.m with average 11.22 g./colony represented 30.31%of the total pollen collected over the day ,followed by the period between 8-10 a.m with average 9.39 g./colony represented 25.36% . While the lowest amount of the collected pollen was found in the period between 4-6 p.m with average 2.61 g./colony which represented 7.04% of the total collected pollen.
On the other hand, results revealed that there were 13 different floral sources of pollen over the two seasons at the region of the study, where bees collected pollen of Zea mays by the highest percentage (46.79%), followed by Trifolium alexandrinum (30.68%), then Phoenix dactylifera (19.00%), however Cucurbita pepo recorded the lowest percentage (1.44%) of the total collected pollen.
Concerning the effect of beebread components on production of the brood area, results indicated to increasing the content of crude protein and crude lipids of the stored beebread was associated with increasing of the brood area in spring, however in summer the brood area decreased with decreasing the crude protein and moisture.
Chemical analysis of the trapped pollen showed that pollen of Helianthus annus recorded the highest level of moisture, crude protein, ash, reducing sugar and pH, while Phoenix dactylifera pollen recorded the highest amount of crude lipids and the lowest amount of ash and pH.
https://jppp.journals.ekb.eg/article_53234_f919b058827437c4d7b83f0774a1a495.pdf
2015-02-01
255
268
10.21608/jppp.2015.53234
Pollen
trapped pollen
stored pollen and daily activity
A.
Hassan
1
Plant Protection Dep. Faculty of Agric. Minia Univ. Minia, Egypt.
AUTHOR
H.
Fathy
2
Plant Protection Dep. Faculty of Agric. Mansura Univ. Mansura, Egypt.
AUTHOR
M.
Bayoumy
3
Plant Protection Dep. Faculty of Agric. Mansura Univ. Mansura, Egypt.
AUTHOR
Enas
Tony
4
Plant Protection Dep. Faculty of Agric. Minia Univ. Minia, Egypt.
AUTHOR
ORIGINAL_ARTICLE
LATENT EFFECT OF DIFFERENT COMPOUNDS ON Pectinophora gossypiella (SAUNDERS)
In the present work newly hatched larvae of Pink bollworm, Pectinophora gossypiella (Saund.) were fed on diet treated with LC50 of four compounds two IGR's, chromafonozide 80% & diflubenzeroun48% and two oils super misrona (mineral oil) & linseed oil( botanical oil) to investigate their toxicity, biological aspects and the biochemical impactsin full grown larvae.
Obtained results show that the tested compounds affected the PBW larvae by increasing larval and pupal duration, total immature stages, pre oviposition, oviposition and post oviposition period, on contrary these compounds decrease weight of larvae and pupae, longevity of females and males, fecundity of females (total laying eggs/♀) and the percentages of egg hatchability than untreated ones. In addition ,the biochemical analysis revealed that the tested compounds, Chromafonozide, Diflubenzeroun, mineral oil and linseed oil when used at LC50 values caused significant reduction in soluble protein ,total lipids and ALT and AST content in adult which caused inhibition and/or reduced the reproductive potentiality compared to control.
https://jppp.journals.ekb.eg/article_53235_f26916af1bdc6a4ba4b779c221800ab0.pdf
2015-02-01
269
279
10.21608/jppp.2015.53235
toxicity
biological aspects
Biochemical analysis
P. gossypiella
PBW
M.
Salem
msalem3030@gmail.com
1
Plant Protection Research Institute, (A. R. C.), Dokki, Giza, Egypt.
LEAD_AUTHOR
ORIGINAL_ARTICLE
TOXICITY AND LATENT EFFECT OF ABAMECTIN AGAINST THE AMERICAN BOLLWORM, Helicoverpa armigera (HUBNER)
The susceptibility of the 4th larval instar of the laboratory strain of Helicoverpa armigera (Hubner) to Abamectin efficiency was evaluated by using different techniques; i.e., dipping, surface film and immersion methods of technique. Abamectin was bio-assayed after 24, 48 72 and 96 hours from the treatment for each technique. The obtained results revealed that the order of the efficiency of the product used against the tested larvae was the same at both LC50 and LC90 values. The highest efficiency of Abamectin for dipping technique was attained 96 hours. The corresponding LC50 and LC90 values were 51.76 and 93.78 ppm, respectively, while, the lowest efficacy of the product was pronounced at 24 hours, the corresponding LC50and LC90 values were 93.51 and 236.71ppm, respectively. Whereas the biological activity of the compound against the 4th larval instar fed on treated leaves for 48 and 72 hr. occupied middle situation among its efficiency at 24 and 96 hr. The corresponding LC50 and LC90 values of the tested biocide after 48 hrs., were 81.52 and 214.46 ppm. On the other hand these values after 72 hr. of feeding were 69.92 and 119.15 ppm, respectively. The susceptibility rates of the 4th larval instar to abamedtin toxicity at LC50 and LC90 values were185.93 & 421.34, 135.34 & 378.25 , 114.66 & 211.64 and 95.58 & 124.29 ppm for surface film technique and 114.73 & 257.19 & 91.32 & 188.65 & 81.56 & 151.15 and 60.58 & 101.19 ppm for immersion method respectively. On the other hand, the susceptibility index as well as the potency levels at both LC50 and LC90 values increased with increasing the period determination .The latent effects of Abamectin on the pupation as well as the adult emergence was determined. The corresponding EC50 and EC90 values associated to quantal scoring of pupation due to dipping surface film and immersion bioassay were 2.63 & 120.51 , 82.02 & 198.12 and 45.45 & 137.42 ppm respectively. Whereas the corresponding IC50 and IC90 values for inhibition of the adult emergence were 20.14 & 91.02, 74.12& 136.22 and 43.22 & 101.32 ppm respectively.
https://jppp.journals.ekb.eg/article_53236_0e502ed93e041c842570d34af135f320.pdf
2015-02-01
281
289
10.21608/jppp.2015.53236
A.
Adly
1
PLANT PROTECTION RESEARCH INSTITUTE, (A.R.C.), DOKKI, GIZA
LEAD_AUTHOR
ORIGINAL_ARTICLE
OPTIMAL TIME FOR INSECTICIDE APPLICATIONS TO REDUCE THE ONION THRIPS, Thrips tabaci POPULATION ON GARLIC CROP AND THEIR EFFECT ON RESULTANT YIELD.
An experiment was carried out under field conditions at Ziton village in Beni-Sueif Governorate during two successive seasons, 2011-2012 and 2012-2013 to choose the suitable time of insecticide applications and their effect on T. tabaci infestation on garlic plants and resultant yield. The four tested treatments by applying two recommended insecticides at different times of plant growth were Carbosulfan (Marshal 20% EC with recommended rate 200 cm3/ fed.) and Spinetoram (Radiant 12% SC with recommended rate 120 cm3/ fed) compared with the untreated garlic plants.
Results and their statistical analysis showed clearly that all treatments significantly decreased the population density of T. tabaci and increased the garlic yield comparing with control treatment. The applying of Carbosulfan and Spinetoram at 15 day intervals (12 times of applications) throughout the whole growing season of garlic plant till one month before harvesting (T1) lead to reduce the population density of T. tabaci infesting garlic plants and gave the highest yield in the two studied seasons, as an average head weight of 12463.50 kg / feddan. Although, garlic plants which treated by Carbosulfan and Spinetoram after one month of sowing date from Nov., 1st at 30 old days till Dec., 15th (4 times of applications) (T2) infested by higher number of T. tabaci,then gave the considerable head yield (9313.50 kg / feddan).
However the application of T3 (Spraying of Carbosulfan and Spinetoram from Jan., 1st of at 90 old days till Feb., 15th) and T4 (spraying of Carbosulfan and Spinetoram from March 1st at 150 old days till April, 15 th) (4 times of applications) were the lowest infested group of T.tabaci and gave the lowest yield in the 4 insecticide applications, as the average of garlic head weight in the two seasons were 8498.70 and 8333.85 kg / feddan respectively. On the other hand, garlic plants in control plots infested by the significantly highest number of T. tabaci and gave the lowest yield when compared with the fourth treatment, as the average head weight in the two seasons was 6139.35 kg / feddan. Concerning the net return of the all tested treatments, T1 gave the best return 13322.55 L.E / feddan.
https://jppp.journals.ekb.eg/article_53238_e4a40d088a2d4a730860e3d196e51279.pdf
2015-02-01
291
300
10.21608/jppp.2015.53238
Garlic
Allium sativum L
onion thrips
Thrips tabaci
chemical control
application time
Economic Evaluation
net return
garlic yield
S.
Hussein
1
Plant Protection Research Institute, (A.R.C), Giza, Egypt.
AUTHOR
A.
Hanafy
2
Plant Protection Research Institute, (A.R.C), Giza, Egypt.
AUTHOR
A.
Afsah
3
Plant Protection Research Institute, (A.R.C), Giza, Egypt.
AUTHOR
Maha
Tantawy
4
Plant Protection Research Institute, (A.R.C), Giza, Egypt.
AUTHOR
ORIGINAL_ARTICLE
EVALUATION OF TWO GROUND SPRAYING EQUIPMENTS FOR CONTROLLING SPINY BOLLWORM Earias insulana (BOISD.) IN COTTON FIELD
Three insecticides; Selecron, Trebon and Patron were sprayed using Knapsack motor sprayer Cifarilli (20 L./Fed.) and Economy Micron ULVA (15 L./Fed.) in cotton field infested with the cotton spiny bollworm Earias insulana (Boisd.) larvae during 2014 cotton season at Qaha district, Qalyoubia Governorate. The spectrum of droplets size ranging between 140-169 microns (VMD) with sufficient number ranging from 14-276 droplets/cm². The productivity of motor sprayer Cifarilli was 12 Fed./day. It was the best equipment, but the lowest productivity was 3.04 Fed./day by using Economy Micron ULVA. Results indicated that Trebon and Selecron insecticides were almost behave to be equitoxic effective in controlling larvae of cotton bollworm on cotton plants than the Patron insecticide with Economy Micron ULVA (15 L./Fed.) followed by Knapsack motor Cifarilli sprayer (20L./Fed.). The efficiency of the tested insecticides could be descendingly arranged as follows: Trebon, Selecron and Patron. The corresponding general reduction rates were 91.15, 55.99 and 92.51% in case of using Micron ULVA equipment and 91.13, 55.19 and 92.20% in case of using Knapsack motor Cifarilli sprayer, respectively. Data showed that, low volume spraying may be recommended because of reducing the time lost in the process filling the machines of reducing the time lost of the spray solution on the plant leaves and saving the lost spray via run off on the ground.
5L./Fed.).
https://jppp.journals.ekb.eg/article_53240_71695428015af0f540f106f8bf4a294b.pdf
2015-02-01
301
312
10.21608/jppp.2015.53240
Earias insulana
Selecron – Batron
Trebon
Knapsack motor sprayer Cifarilli (20 L./Fed.) and Economy Micron ULVA (1
Rehab
Dar
1
Plant Protection Res.instit.Agric.Res.Center, Dokki, Giza.
AUTHOR
M.
Salem
msalem3030@gmail.com
2
Plant Protection Res.instit.Agric.Res.Center, Dokki, Giza.
AUTHOR
Hemat
Moustafa
hemat.zakaria@gmail.com
3
Plant Protection Res.instit.Agric.Res.Center, Dokki, Giza.
AUTHOR
Nabiela
Hiekel
4
Plant Protection Res.instit.Agric.Res.Center, Dokki, Giza.
AUTHOR
ORIGINAL_ARTICLE
FEASIBILITY OF USING PLANT OILS AS A CONTROL AGENTS AGAINST TWO-SPOTTED SPIDER MITE Tetranychus urticae KOCH (ACARI: TETRANYCHIDAE).
Laboratory trials were carried out to evaluate the influence of seven plant oils on population of two-spotted spider mite Tetranycus urticae Koch (Acari: Tetranychidae) at 30±1ₒC and 70% ±5 RH. The tested plant oils were Jatropha curcas (Jatropha), Eucalypts globulus (Camphor), linum vsitatissimum (Flax or Linen), Ricinus communis (Castor), Rophanus sativus (Radish), Lupinus termis (Lupine) and Alilum sativum (Garlic). The amounts of plant oils applied were 3, 4, 5, 6, 7, 8, 9 and 10ml. /liter. and sodium laurel sulfate (S.L.S) and Twen80 were used as solvents. The results revealed that, the Jatropha oil was the highest affective oil on the adult females of T. urticae in comparison with other six oils. The concentrations 8, 9 and 10ml. /l. gave high reduction percentages than the low concentrations for all plant oils. All oils were more effective after 72h. from spraying at high concentration. The S.L.S solvent was more effective than Twen80 and other seven tested oils at all concentrations.
https://jppp.journals.ekb.eg/article_53241_3df94ef6d9f6cdd8c2e2c9c97779915d.pdf
2015-02-01
313
322
10.21608/jppp.2015.53241
M.
Abu-Shosha
1
Department of Agricultural Zoology and nematology Faculty of Agriculture, Al-Azhar University, Assiut.
LEAD_AUTHOR
ORIGINAL_ARTICLE
COMPARATIVE TOXICITY OF SOME PLANT EXTRACTS ON EGGS AND ADULT FEMALES OF Tetranychcus urticae KOCH (ACARI: TETRANYCHIDAE).
The present study was conducted in the laboratory to assess the effects of two plant extracts (Jatropha curcas & Euphorbia lathyris ) with four solvents (chlorophorm, ethyl acetone, acetone and methanol) on eggs and adult females of Tetranychus urticae Koch (Acari : Tetranychidae) at laboratory condition (27±2°C and 65±5% RH.). The results revealed that, the Jatropha curcas and Euphorbia lathyris gave high effected at concentrations 2.4 and 1.2% after 24, 48 and 72h. for adult females of T. urticae. While at concentration, 0.6% gave good results after 72 h. for the two extracts. Also, the concentration of 0.3% was not effective, except for J. curcas when used the acetone as a solvent. The acetone was the best solvent followed by chlorophorm and ethyl acetate. But, the solvent of methanol was not effective for the two plant extracts. The extract of J. curcas was more effective on eggs of T. urticae than the extract of E. lathyris; and the concentration of 2.4% was the best for its effect on eggs. However, the concentrations of 0.6 and 0.3% were slightly effective on eggs of T. urticae.
https://jppp.journals.ekb.eg/article_53242_a2dcc25cdcbaacf5f23e7130919c105a.pdf
2015-02-01
323
331
10.21608/jppp.2015.53242
M.
Abu-Shosha
1
Department of Agricultural Zoology and nematology Faculty of Agriculture, Al-Azhar University, Assiu.
AUTHOR
N.
Azzaz
2
Department of chemical, Faculty of Agriculture Dumyat University.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF PREY TYPES ON SOME BIOLOGICAL ASPECTS OF Chrysoperla carnea (STEPH.) UNDER LABORATORY CONDITIONS.
Effect of prey kind on some biological aspects of C. Carnea was studied under laboratory conditions of 28 ±2 oC and 65±5 %R.H. The studied preys were Thrips tabaci Lindr, Gynaikothrips ficorum Marshall, Aphis durantae Thobald, Spdoptera littoralis (Biosd.), andcontrol fed on (A. craccivora Koch.).
The obtained results revealed that there were significant differences between the total developmental periods (26.9, 20.6, 23.0, 19.8 days when this predator reared on T.tabaci, G. ficorum, A. durantae, and S. littoralis compared with (15.4 ± 0.4) days with (15-16) in control (A. craccivora). There were highly significant differences between oviposition periods (17.9, 15, 7.6, and 10.0 days compared with 10.0 days in control (A. craccivora), respectively. Adult longevity (female: 30.5, 15.6, 25, 25.1 days but recorded 20.0 days in control (A. craccivora). and male: 30, 20.5, 27.2, and 20.9 days) compared with 15.4 days in case of rearing on A. craccivora. While fecundity (number of eggs/female: 109, 131, 156, and 43 eggs) compared with 210eggs in control, (A. craccivora Koch.). And sex ratio (female: male); 1:2, 1:2, 1:1 and 1: 2 respectively. All results are recorded for the preys: T.tabaci, G. ficorum, A. durantae, and S. littoralis, respectively. While, the control. Fed on A. craccivora was (1:1).
https://jppp.journals.ekb.eg/article_53244_21f69c7e33a57167d6ff8c8b70efc9fd.pdf
2015-02-01
333
343
10.21608/jppp.2015.53244
Chrysoperla carnea
different preys
fecundity
longevity
S.
ABd – El - Atty
1
Plant Protection Res. Institute, Agric. Res.Center, Dokki, Giza, Egypt
LEAD_AUTHOR
ORIGINAL_ARTICLE
WHEAT GRAINS INFECTION AND CONTROL MEANS WITH PLANT EXTRACTS
Wheat (Triticum aestivum) is being attacked by several fungal pathogens, many of them are seed-borne, infesting wheat seeds (grains) are detected by methods as recommended by the ISTA, 1966. Fungi such as Altenaria alternate, Aspergillus flavus, Aspergillus niger, Chaetomium spp, Cladosporium spp, Epicoccum spp, Fusarium spp, Fusarium oxysporum, Fusarium solani, Nigrospora oryzae, Penicillium spp, Rhizoctonia solani, Stemphyllium spp.and Trichoderma spp. were isolated from the wheat cultivars i,e Gemmiza 7, Gemmiza 10, Sids 1, Sids 12, Sakha 93, Sakha 94 and Bani sweif 1. Extracts of pomegranate, Neem and Garlic were screened for the potential antimicrobial activity through cup-plate method against three fungi (F. oxysporum, R. solani and A. alternata. All extracts showed inhibitory activites. F. oxysporum, R. solani and A. alternata were the greater portions of the isolated fungi. In vitro studies, seed treatment with 10, 20 and 30 % of concentration of plant extracts for 24 hours showed a complete germination and all seed testing. In vitro studies using cup-plate method were exercised to examine the antifungal activity of three plant extracts i.e., Neem, Pomegranate and Garlic against such fungi associated with wheat seed. F. oxysporum, R. solani and A. alternata were the greater portion of the isolated fungi. However, they were regarded of our main concern in order that they were known of their serious pathogens. Neem leaf extract showed good activity followed by pomegranate peeland garlic leaf extracts. In vivo trials, results of the efficacy of plant extracts against the seed-borne pathogens were just about those cropped up in vitro practises.
Effect of fungicides (Rizolex T 50 %) and three plant extracts on the incidence of seed-borne fungi and their effect on seed germination were evaluated. The seed treatment by the fungicides showed that (Rizolex T 50 %) increased the germination percentage and reduced seed mycoflora. Fungal properties of plant products were tested. Efficacy of biocontrol agent against (F. oxysporum, R. solani and A. alternata) was found good in controlling the seed-borne fungi and pomegranate was proved to be good inhibitor of fungi associated with wheat seeds. Thus, the seeds should be treated invariably by less phytotoxic fungicides like Rizolex T 50% and biocontrol agent like Pomegranate to eliminate the seed-borne mycoflora of wheat. The main aim of present study is to ascertain the fungal species and their effect on wheat grains germination.
https://jppp.journals.ekb.eg/article_53246_98c09b6cf9abbce04d3005876833b25c.pdf
2015-02-01
345
358
10.21608/jppp.2015.53246
Triticum aestivum
seed-borne fungi
pomegranate
Neem
Garlic
F. oxysporum
R. solani
A. alternata
aquous extracts. seed testing
Amal
Khalil
1
Plant Pathology Research Institute, Agric, Res, Center, Giza, Egypt.
AUTHOR
Somaya
Tohamey
2
Plant Pathology Research Institute, Agric, Res, Center, Giza, Egypt.
AUTHOR
H.
El-Sharkawy
3
Plant Pathology Research Institute, Agric, Res, Center, Giza, Egypt.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF POMEGRANATE (Punica granatumL.) FRUITS PEEL ON SOME PHYTOPATHOGENIC FUNGI AND CONTROL OF TOMATO DAMPING-OFF
Pomegranate peel powder and its extract were used to study their efficiency against damping-off disease caused by Fusarium oxysporum f. sp. lycopersici. In vitro, methanolic extract of pomegranate peel caused inhibitory effect to the linear growth of different phytopathogenic fungi isolated from different hosts including:
Botrytis cinerea, Colletotrichum dematium, F. oxysporum, F. solani, Phoma sp. and Rhizoctonia solani. Also, Pomegranate peel extract (PPE) effectively decreased linear growth and spore germination of F. oxysporum and greatest decrease was recorded at 4000 ppm under greenhouse conditions. Application of pomegranate peel powder as seed treatment or soil treatment deceased pre and post-emergence damping-off caused by F. oxysporum f. sp. lycopersici compared with untreated infected control. Treating tomato seedlings or soil with peel extract before sowing provided a good protection against damping off and soil treatment was more effective than seedling treatment. Methanolic extract of pomegranate peel revealed that it contained different compounds of antifungal activity including three flavonoids, three tannins, four phenolic compounds, one glycosides along with four sterols.
https://jppp.journals.ekb.eg/article_53247_6f395d5b552d53c7b98e4e66aceff70e.pdf
2015-02-01
359
374
10.21608/jppp.2015.53247
Fusarium oxysporumf. sp. lycopersici
Linear growth
spore germination
Gas chromatography-mass spectrometry ( GC-MS)analysis
antifungal activity
Flavonoids
tannins
Phenolic compounds
glycosides
sterols
Tahany
Mohamad
1
Central Agricultural Pesticides Laboratory, Agriculture Research Center. Giza, Egypt.
AUTHOR
Amal
Khalil
2
Plant Pathology Research Institute. Agriculture Research Center. Giza, Egypt
AUTHOR
ORIGINAL_ARTICLE
POLLEN GATHERING ACTIVITY AND SPECIES COMPOSITION OF COLLECTED POLLEN LOADS BY HONEYBEE IN NEW VALLEY, EGYPT
The present investigation was carried outin the apiary yard at El Kharga Oases, New Valley Governorate, Egypt, during the period extended from January to December 2011. The results of the study reveal that The highest percentages of pollen collectors (28.12 and 14.3%) were recorded during May and September, respectively. The lowest percentages, 3.12 and 2.85%, were noticed throughout February and June, respectively. Maximum number of pollen collectors was noticed during the period from 11 a.m. to 1 p.m. (0.23 bees/ 2 min. / colony). Minimum number of pollen collectors was noticed during the period 7 - 9 a.m. (0.13 bees/ 2 min. /colony). The highest amount of pollen (810 gm. / colony) was collected during May, followed by September (412 gm. / colony). The lowest amount of pollen (82 gm. / colony) was collected during June, followed by February and December (90 and 93 gm. / colony), respectively.Significant correlation were detected between temperature daily range and the average amounts of pollen collection, where, r= 0.310.Highly significant correlation were detected between relative humidity (R.H. %) and the average amounts of pollen collection (gm./colony/ 2h.), where, correlation coefficient (r) = - 0.405.Species composition of collected pollen loads by honeybee workers appeared that, there are 20 different floral sources in El Kharga Oases.Such information will be useful for improving honeybee colony status and development in New Vally especially during the pollen shortage periods.
https://jppp.journals.ekb.eg/article_53249_83613b0514413e7c3542e1028520f31c.pdf
2015-02-01
375
387
10.21608/jppp.2015.53249
Honeybee
Apismellifera
pollen gathering
weather factors
species composition NewValley
M.
Mahbob
mahbobent@yahoo.com
1
Zoology Department, Faculty of Science, New Valley Branch- Assiut University
LEAD_AUTHOR
ORIGINAL_ARTICLE
INCIDENCE OF SOME PIERCING SUCKING PESTS AND THEIR NATURAL ENEMIES ON WATERMELON IN ASSIUT GOVERNORATE
Field experiments were carried out at El-Ghorieb village, Sahel Selem district, Assiut Governorate during two growing successive seasons, 2013 and 2014 to study some ecological aspects of some piercing sucking pests and associated natural enemies inhabiting water melon, Citrullus vulgaris (Schard).
Results indicated that the major piercing sucking pests [the two-spotted spider mite, Tetranychus urticae Koch; the whitefly, Bemisia tabaci (Genn.); the cotton aphid, Aphis gossypii Glover and the leafhopper, Empoasca decipiens (Paoli)] and their associated natural enemies [Coccinella undecimpunctata, Chrysopa carnea, Orius sp. and Scolothrips longicornis]
Data showed that the relation between the natural enemies with their preys was positively and significantly during both seasons.
The results also showed that the highest dominance and abundance were recorded with the piercing sucking pests; T. urticae and B. tabaci followed by E. decipiens and A. gossypii as for the natural enemies; S. longicornis followed by Orius sp., C. undecimpunctata and Ch. Carnea. Finally, the previous natural enemies could have a promising role when planning Integrated Pest Management (I.P.M.) strategies with other safe methods to protect the surrounding environment from pollution.
https://jppp.journals.ekb.eg/article_53251_3a259cec3c6ddd6489c89667b8a59aac.pdf
2015-02-01
389
398
10.21608/jppp.2015.53251
Population fluctuation – Correlation – Dominance & abundance – Pests – Predators
A.
Abou El-Saad
1
Plant Protection Research Institute, Agricultural Research Center, Giza, Egypt.
LEAD_AUTHOR
ORIGINAL_ARTICLE
MITES INFESTING THREE VEGETABLE CROPS IN ASSIUT GOVERNORATE
A field experiment was carried out in El-Kossia district, Assiut Governorate during early summer plantations of 2013 and 2014 in order to study numerical density of three phytophagous mites (i. e. Tetranychus urticae Koch, Tetranychus cucurbitacearum (Sayed) (Acari: Tetranychidae) and Aculops lycopersici (Massee) (Acari: Eriophiidae)) inhabiting three vegetable crops squash, Cucurbita pepo L.; common bean, Phaseolus vulgaris L. and tomato, Lycoperiscon esculentum Miller, in addition to study the survey of the soil mites under the previous three vegetable plantations.
Results indicate that T. urticae Koch infested the three vegetable crops; T. cucurbitacearum (Sayed) infested squash and the common bean. While A. lycopersici was found only on tomato plantations. The survey study revealed the presence of 33 mite species belonging to 20 families. The Mesostigmata mites ranked the first as they included the highest numbers of species (13 species) followed by the Cryptostigmata mites (11 species); the Prostigmata (6 species) and the Astigmata (3 species).
The results obtained in the present study should be taken into account in planning programs when conducting the integrated pest management in the three previous vegetable fields. On the other side, it must be performed exclusively survey for all mite species on either the green leaves or soil beneath of those vegetable plants at Assiut area.
https://jppp.journals.ekb.eg/article_53252_f359dcb59bb1a4251e0503f29bbfc0cc.pdf
2015-02-01
399
406
10.21608/jppp.2015.53252
squash
common bean
Tomato
Tetranychus urticae
T. cucurbitacearum
Aculops lycopersici
soil mites
Survey
A.
Abou El-Saad
1
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.
LEAD_AUTHOR
ORIGINAL_ARTICLE
INDUCTION OF RESISTANCE AGAINST RHIZOCTONIA ROOT ROT OF COMMON BEAN
The effect of seed treatments of common bean plants (cv. Nebraska) with Bion, Salicylic Acid (SA) and Paenibacillus polymyxa on infection with Rhizoctonia solani under greenhouse and field conditions was investigated. In greenhouse experiment, all treatments decreased percentages of pre and post-emergence damping- off compared with control grown in infested soil by R. solani. The highest percentage of survival plants was achieved from treatment with Bion 5mM (80%) followed by each of Bion 3mM and SA 5mM (76.7%) compared with control (40.1%). Meantime, significant increases in the values of shoot length, shoot dry weight and root dry weight over the control treatment were achieved.
Under field experiments during summer 2009 and 2010 growing seasons, all the tested treatments significantly increased the percentage of survived plants compared with the control. There were no significant differences between the treatments with Bion 3mM and fungicide (Rhizolex-T 3g/Kg seeds) 89.4% and 89.3 %, respectively compared with untreated control 67.9% calculated as means of the two seasons. Also, the treatments with salicylic acid and P. polymyxa were less effective regarding survival plants in 2009 and 2010 growing seasons. Moreover, all treatments significantly increased all the studied vegetative characteristics, i.e. stem length, number of leaves/plant as well as fresh and dry weight of leaves/plant compared with untreated control. Meanwhile, higher increase pe in seed yield (kg/feddan) was estimated with bion and fungicide treatments (86% and 87.7%, respectively) followed by salicylic acid and P. polymyxa (66.8% and 55.4 %, respectively) increasing over the untreated control calculated as means of the two seasons.
Laboratory studies indicated that, all treatments were effective in eliciting the activities of peroxidase and polyphenol oxidase. Peroxidase activity was higher with Bion followed by SA treatments; they showed 77.7% and 41.2 % increase over the untreated control, respectively. Meantime, elevation of the polyphenol oxidase activity was showed with Bion followed by SA treatments as 97.7% and 58.0% increasing over the untreated control, respectively. However, Bion treatment resulted in the highest increase in total phenols contents over the untreated control (94.3%) followed by SA and P. polymyxa treatments (57.9% and 52.6%) over the untreated control, respectively.
https://jppp.journals.ekb.eg/article_53254_2629c343916ef83e3eafb7e1a2ef0c23.pdf
2015-02-01
407
430
10.21608/jppp.2015.53254
common bean
Rhizoctonia solani
Paenibacillus polymyxa
Bion
Salicylic acid
Rhizolex-T
S.
Shehata
1
Department of Plant Pathology, Faculty of Agriculture, Ain Shams University, Shobra El-Kheima, Cairo, Egypt.
LEAD_AUTHOR