ORIGINAL_ARTICLE
APPLICATION OF CERTAIN RESISTANCE INDUCERS FOR CONTROLLING FABA BEAN WILT DISEASE UNDER GREENHOUSE AND FIELD CONDITIONS
Fusarium oxysporum f.sp. fabae (Schlecht) Snyder &.Hansen (FOF) is a serious pathogen on faba bean causing wilt disease. In greenhouse experiments, the three tested isolates of the pathogen were differed in their virulence on faba bean cultivars (Giza 29, Giza 4 and Misr 1). Isolate (FF1) was the most virulent one. Faba bean cultivars reacted differently to the infection by FOF isolates. While cv. Misr 1 was the most susceptible one, cvs Giza 29 and Giza 4 showed moderate resistance. In vitro testes, the resistance inducers ascorbic acid (AS) and acetic acid (AA) reduced dry weight of the pathogen followed by salicylic acid (SA) and oxalic acid (OA). Effectiveness of the tested resistance inducers in controlling the disease was tested under greenhouse and field conditions. All applied treatments protected faba bean seedlings against FOF in greenhouse. The most effective treatments were AS and AA treatments, however in field experiments, seed treatments by OA, AA, AS and SA reduced the disease incidence. Almost tested treatments significantly increased cellulose content in treated plants except OA treatment compared with untreated plants. The highest reduction in disease incidence was obtained with AS, AA and SA treatments. Seed treatment with AA and AS significantly increased pectin content in treated plants compared with untreated ones. Faba bean seed treatment with 1 % (AS) exhibited the highest content of lignin, while, seed treatment with 0.25 % (AA) exhibited the lowest lignin levels.
https://jppp.journals.ekb.eg/article_86961_f1bc8e47c5174c97f8e6a4a296d20b39.pdf
2010-12-01
937
948
10.21608/jppp.2010.86961
Faba bean wilt
resistance inducers (RIs)
Fusarium oxysporum f.sp. fabae lignin
cellulose
M.
Asran
1
Dept. of Plant Pathology, Faculty of Agriculture, Sohag Univ., Sohag, Egypt
AUTHOR
Nashwa
Sallam
2
Dept. of Plant Pathology, Faculty of Agriculture, Assiut Univ., 71526, Assiut, Egypt
AUTHOR
ORIGINAL_ARTICLE
REACTION OF SOME GRAIN SORGHUM CULTIVARS TO DOWNY MILDEW DISEASE INFECTION CAUSED BY Peronosclerospora sorghi .
This work was carried out in disease nursery at Gemmeiza Agricultural Research Station, El-Gharbeia Governorate, Egypt in 2009 and 2010 growing seasons. Five grain sorghum cultivars i.e. Isis, Horas, Zosar, Giza 15 and Giza 113 were evaluated for downy mildew disease resistance caused by Peronosclerospora sorghi. Effect of downy mildew disease on grain yield and leaves chemical components was also studied. The tested grain sorghum cultivars were varied significantly in their response to downy mildew disease. The cultivars Isis and Zosar were showed as highly resistant. Horas cv. was classified as moderately susceptible. While, Giza 15 and Giza 113 were classified as susceptible. The highly resistant cultivars Isis and Zosar showed the highest grain yield, in addition the leaves of these varieties contained the highest level of total nitrogen, crude protein , phosphorus and potassium compared with the susceptible cultivars. The enzymatic activity of peroxidase and polyphenoloxidase and also, phenolic compounds contents in the grain sorghum cultivars leaves were the highest in case of the highly resistant cultivars. The leaves of susceptible cultivars showed the lowest contents of enzymatic activity and phenolic compounds. Results showed a positive correlation between the resistance degree and grain yield and / or chemical components.
https://jppp.journals.ekb.eg/article_86962_2909eb7a4cd220cb3f92159b1de49de1.pdf
2010-12-01
949
957
10.21608/jppp.2010.86962
grain sorghum
downy mildew
Peronosclerospora sorghi
peroxidase
polyphenoloxidase
Phenolic compounds
A
El-Sayed
1
Maize, Sugar Crops and Foliage Dis. Res. Dept., Plant Pathol. Res. Instit., A.R.C., Giza, Egypt.
AUTHOR
M.
Sadoma
2
Maize, Sugar Crops and Foliage Dis. Res. Dept., Plant Pathol. Res. Instit., A.R.C., Giza, Egypt.
AUTHOR
H.
Awad
3
Maize, Sugar Crops and Foliage Dis. Res. Dept., Plant Pathol. Res. Instit., A.R.C., Giza, Egypt.
AUTHOR
ORIGINAL_ARTICLE
INSECTICIDAL EFFECT OF SOME INERT DUSTS AGAINST THREE OF STORED GRAIN INSECTS AT KAFR EL-SHEIKH GOVERNORATE
Laboratory and field studies were conducted to evaluate the effect of three inert dusts, diatomaceous earth, kaolin and katelsous as wheat grain protectants against some stored grain insects, i.e., Sitophilus oryzae, Rhizopertha domininca and Tribolium confusum. Inert dusts were mixed with wheat grain in the laboratory at different concentrations. Data obtained from the laboratory experiment showed that the LC50,s of diatomaceous earth, kaolin and katelsous were 0.234, 0.071 and 0.235% w/w, 6.033, 6.306 and 8.938% w/w and 0.495, 0.496 and 103.875% w/w against S. oryzae, R. dominica and T. confusum, respectively one day after treatment. Diatomaceous earth was more effective than the other tested materials where it achieved complete mortality for the three tested insects after two days of treatment at the rate of 0.5% w/w. Results also showed that kaolin and katelsous act slowly on the tested insects, where the higher rates of 8% w/w for kaolin and 0.4% w/w for katelsous gave complete mortality after one week post treatment. For the field study (at farmers, storages), the higher concentrations (0.5, 8 and 0.4% w/w) of the three dusts, diatomaceous earth, kaolin and katelsous, respectively obtained from laboratory experiment were admixed with wheat grain and stored for 4 months at the farms. For the field experiment, the results showed that diatomaceous earth gave 100%, 91.6% and 98.2% mortality against the three tested insects, respectively after 4 months of storage at a concentration of 0.5% w/w at 7th day of exposure. Kaolin at 8% w/w showed that adult mortality decreased from 100% at zero time of storage after 5 days of exposure to 13.7%, 27.1% and 16.9 at 4 months of storage after the same period of exposure against the three tested insects respectively. At zero time of storage, katelsous at a rate of 0.4% w/w showed the percent mortalities of 100%, 100% and 95.7% against the three tested insects, respectively at 5 days of exposure. The residual effect after 4 months of storage decreased to 14.3%, 52.9% and 35.6% mortality against the three insects, respectively at the same time of exposure. In general the results obtained showed that the diatomaceous earth had the most activity followed by katelsous and kaolin against the three tested insects. Also, the degree of effectiveness decreased with the increasing of storage periods.
https://jppp.journals.ekb.eg/article_86963_e3789e4cf6cfec06355517dda68230d7.pdf
2010-12-01
959
972
10.21608/jppp.2010.86963
Ferial
El-Sayed
1
Dept. of Stored Product Pests Res., Plant Protection Res. Inst., Agric. Res. Center, Dokki, Egypt.
AUTHOR
H.
El-Zun
2
Dept. of Stored Product Pests Res., Plant Protection Res. Inst., Agric. Res. Center, Dokki, Egypt.
AUTHOR
A.
Abd El-latif
3
Dept. of Stored Product Pests Res., Plant Protection Res. Inst., Agric. Res. Center, Dokki, Egypt.
AUTHOR
M
Nasr
4
Dept. of Stored Product Pests Res., Plant Protection Res. Inst., Agric. Res. Center, Dokki, Egypt.
AUTHOR
ORIGINAL_ARTICLE
MANAGEMENT OF SHOT-HOLE DISEASE OF STONE FRUIT TREES CAUSED BY Stigmina carpophila
Shot-hole on leaves of stone fruit, caused by Stigmina carpophila (Lev.) M.B. Ellis was serious on peach, apricot and plum trees in Nobariya area, 6-th October and Menofiya governorates in 2007-2008 seasons. Isolation carried out from different cultivars revealed no variation among isolates from samples collected from different localities. Calcium and potassium salts (chloride and hydroxide) were more effective than (nitrate and phosphate) in reduction of S. carpophila in the In-vitro and open filed, Higher efficacy of salts to control shot hole disease was recorded for the higher salt concentration as shown in trees sprayed with 1800 ppm. Antagonism studies done on the pathogen and bioagents i.e. Trichoderma viride, T. harzainum, B.light stop (T. harzainum), and Bacillus subtilis either in In-vitro or in greenhouse reduced disease severity in both 2007 and 2008 seasons. Fungicides tested i.e. (Punch, Sumi-8, Sythane-24, Topas-100, Flint, and Cam Zen) in the In-vitro and in open field gave the best control of shot hole disease.
https://jppp.journals.ekb.eg/article_86964_d02cea8105741fa4b742837cba910588.pdf
2010-12-01
973
989
10.21608/jppp.2010.86964
Stone fruit trees
shot- hole
Stigmina carpophila
disease management
Azza
Azmy
1
Fruit Trees and Woody Diseases Dept., Plant Pathology Res. Institute, Agric. Res. Center.
AUTHOR
A.
Korra
2
Fruit Trees and Woody Diseases Dept., Plant Pathology Res. Institute, Agric. Res. Center.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF SEED PRIMING ON INFECTION WITH WHITE TIP NEMATODE (Aphelenchoides besseyi), SEED-BORNE FUNGI, RICE YIELD, AND YIELD COMPONENTS IN EGYPT.
Rice is the second staple food crop after wheat in Egypt. White tip disease of rice leaves induced by the rice leaf nematode, Aphelenchoides besseyi (Christie, 1942), is widespread nearly in all rice ecosystems all over the world, causing remarkable yield reduction to susceptible cultivars. The losses reach to 47% in Egyptian rice Reiho cultivar. Rice seeds are known as the main source of the disease. The present study was conducted to evaluate the effect of seed priming on white tip nematode infection in rice and seed-borne fungi at different plant growth stages. Severely-infected Reiho rice seeds were primed for 48 hr in solutions of NaCl, CaCl2, Na2CO3, MgSO4, CuSO4 and micronized sulfur, separately or in mixtures of two salts except for the sulfur treatment. The primed seeds and the corresponding control non-primed counterparts were then rinsed for three times using tap water and incubated at 30oC to asses the germination percentage, which ranged between 96 to 100% with no significant difference between the primed and non-primed seed treatments. In the lab testing, the maximum seedling vigor index and root / shoot ratio were obtained using seedlings raised from seeds primed with 5 g/L solutions of sulfur (80%WP) followed by sulfur + CaCl2, NaCl and CuSO4. At nursery level, root/shoot ratio increased with all primed seed treatments except with those treated with NaCl solution. Two field experiments were conducted during the 2007and 2008 rice growing seasons. All seed priming treatments significantly enhanced most of the agronomic traits and increased yield in comparison with the non-primed infected or healthy seeds. Soaking in sulfur solution at the concentration of 5g/L and its combinations with the other salts at half dose of each gave the highest mortality of white tip nematode, lowest percentage of white tip infection, and least disease severity. Sulfur and NaCl is then proved to be the most effective priming mixture that can reduce white tip nematode infection. For seed-borne fungi, the treatment with CaCl2 alone or in its all combinations has positive effects in elimination of the Fusarium Moniliforme, Helminthosporium oryzae and Alternaria padwickii in comparison with the water treatment control. CaCl2 completely eradiated F. moniliforme. Seed treatment with mixtures of salts reduced the fungal growth more than did one salt alone. Generally, all seeds primed with salts showed lower levels of infection with F. moniliforme comparing with the control. The treatment with CuSO4 solution at 1.5g/L gave complete protection from seed-borne fungi
https://jppp.journals.ekb.eg/article_86965_e08179ab0e1344f4562ab4458cbc7820.pdf
2010-12-01
991
1007
10.21608/jppp.2010.86965
Seed priming
NaCl
CaCl2
sulfur
white tip nematode
Aphelenchoides besseyi
Bakanae
Fusarium moniliforme
Bipolaris
Alternaria
R.
El-Shafey
1
Rice Res. Dept., Field Crops Res. Institute, Agric. Res. Center, Sakha, Kafr El-Sheikh 33717, Egypt.
LEAD_AUTHOR
Rabab
Elamawi
rabab.elamawi@yahoo.com
2
Rice Res. Pathol. Dept., Plant Pathol. Res., Institute, Agric. Res. Center, Sakha, Kafr El-Sheikh 33717, Egypt.
AUTHOR
ORIGINAL_ARTICLE
INTRA-SPECIFIC COMPETITION AND CANNIBALISM IN THE LADYBIRD BEETLE, Coccinella undecimpunctata L. (COLEOPTERA: COCCINELLIDAE)
Investigation of the intra-specific competition of different developmental stages of Coccinella undecimpunctata L. was done on scarcity of food and different diet combinations. There was indiscriminate egg cannibalism among the larvae and adults of their own species. The scarcity of food was not the only reason for cannibalism. The fourth instar larvae were more voracious while feeding on eggs as well as on the first instar larvae as compared with the other three larval instars. The increasing numbers of egg consumption by adults was also related to their egg production and the length of the oviposition period. It is concluded that cannibalism increased the survivorship and shortened the developmental period of C. undecimpunctata.
https://jppp.journals.ekb.eg/article_86966_93c6cd269b08f4d75d510a23b73191e5.pdf
2010-12-01
1009
1012
10.21608/jppp.2010.86966
M.
Al- Ansari
1
Plant Protection Dept., Fac. of Agric., Al-Azhar University, Cairo, Egypt
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF SOME FOOD ADDITIVES ON WORKERS AND QUEENS OF HONEY BEE (Apis mellifera L.)
Three different artificial diets containing gluten, black seed oil or vitamins were tested for their effects on midgut of honey bee nurse worker and some morphological queen parameters. There were large increases in size and number of columnar epithelial, regenerative cells and peritrophic membrane in case of vitamins and gluten fed workers. Black seed oil fed workers had slight effects compared with those fed on sugar syrup. Vitamins and gluten increased virgin queens emergence percents, body weight, abdominal length and width, number of ovarioles and ovary length and width.
https://jppp.journals.ekb.eg/article_86967_f84c34ff9e74356e99eff5084459ac03.pdf
2010-12-01
1013
1021
10.21608/jppp.2010.86967
W.
Elaidy
1
Zoology Department, Faculty of Science, Mansoura University, Egypt
AUTHOR
A.
Ebeid
2
Zoology Department, Faculty of Science, Mansoura University, Egypt
AUTHOR
H.
Fathy
3
Economic Entomology Department, Faculty of Agriculture, Mansoura University, Egypt
AUTHOR
S.
Salama
4
Zoology Department, Faculty of Science, Mansoura University, Egypt
AUTHOR
ORIGINAL_ARTICLE
Almergib agricultural ministry
Most beekeepers think that the bee-eaters birds are the main obstacle causing bee workers not to forage, and stay in side the hives for a long time of the day during the period extending from June to end of August. As result of some field observations bee-eaters behavior, this research have been carried out to understand foraging behavior of bee-eaters, and investigate the predation relation between honey bee and bee eater.
The study have been carried out in Eucalyptus forest in Alalous region which is located 80 Km east of Tripoli-Libya. In the study , the rate of foraging during the day hours and for all the days of study during the period which are mentioned above have been measured, also the number of the birds have been counted and presences of its perches and nest..
The study showed that the bee-eaters were not the main obstacle of bee foraging, which are opposite of what beekeepers think. Foraging rate was higher in presence of the birds than in their absence in some cases.The average bird meal consist from 90.8 % and 9.2 % of honey bee and coleoptera respectively.The study also showed that there was correlation between the foraging rate and temperature during the study period, where the foraging rate decreased as temperature increased, at the same time the study showed that there was no any correlation between foraging rate and air humidity.
https://jppp.journals.ekb.eg/article_86968_4d5ada367b6c0d2ccc90cd8c84061878.pdf
2010-12-01
1023
1034
10.21608/jppp.2010.86968
Bee eater
Merops apiaster
bee worker
predation
Foraging
H.
Alfallah
h_mahdi32@yahoo.com
1
Plant Protection Dept., Agric. College, Alfateh University Tripoli, Libya
AUTHOR
M.
Alfituri
mustafamf@yahoo.com
2
African Arabic Center for Beekeepig Techniques
AUTHOR
M.
Hmuda
3
Almergib agricultural ministry
AUTHOR
ORIGINAL_ARTICLE
GASEOUS OZONE FOR CONTROLLING POSTHARVEST FUNGAL DECAY OF TOMATO UNDER MARINE SHIPPING CONDITIONS.
Postharvest fungal decays of tomato caused by Alternaria alternata, Botrytis cinerea, Geotrichum candidum and Rhizopus stolonifer, result in significant economic losses during different stages from harvesting from farm to fork. The efficacy of ozone gas for controlling fungal postharvest fungal decays of tomato was evaluated. In the laboratory tests, Ozone 0.1 ppm in the atmosphere above inoculated PDA didn’t affect radial growth, fresh weight or dry weight of the previously mentioned fungi, but, the development of aerial mycelium over the cultures appeared to be blocked. On the other hand, ozone significantly decreased the spore germination of the most tested fungi. Ozone also, decreased the density of fungal spores in the air of a storage room when it was applied for 24 hours. In fruit tests, ozone 0.15 ppm at 10 °C and RH 99% prevented the development of lesions on wound-inoculated tomato fruits for 7 days. After 10 days, progressive lesions were observed but were smaller than those on control fruit. In contrast, when the treatment was applied at 22°C, lesions developed similarly to those on control fruit but sporulation was inhibited. There was no evidence of phytotoxicity associated with these ozone treatments.
https://jppp.journals.ekb.eg/article_86969_9b6573a785a2a0841ab1645ff170df6c.pdf
2010-12-01
1035
1047
10.21608/jppp.2010.86969
Ozone- Postharvest decay-Tomato-Alternaria alternata-Botrytis cinerea
Geotrichum candidum
Rhizopus stolonifer
M.
El-Sheshtawi
1
Plant Path. Dept., Fac. of Agric., Mansoura Univ., Egypt.
AUTHOR
S.
Elafifi
2
Plant Path. Dept., Fac. of Agric., Mansoura Univ., Egypt.
AUTHOR
M.
Elmazaty
3
Plant Path. Dept., Fac. of Agric., Mansoura Univ., Egypt.
AUTHOR
J.
Bartz
4
Plant Path. Dept., Inst. of Food and Agric. Sci. (IFAS), University of Florida, USA.
AUTHOR
M.
Elkahky
5
Plant Path. Dept., Fac. of Agric., Mansoura Univ., Egypt.
AUTHOR
ORIGINAL_ARTICLE
COMPARATIVE EFFICIENCY OF PESTICIDES AND SOME PREDATORS TO CONTROL SPIDER MITES: I-TOXICOLOGICAL STUDIES OF SOME ENVIRONMENTALLY SAFE CHEMICALS AGAINST THE TWO SPOTTED SPIDER MITE, Tetranychus urticae AND THEIR PREDATORS Amblyseius gossipi, Phytoseiulus macropili AND Stethorus gilvifrons
In the present study was carried out to evaluate the toxic effect of six compounds of different mode of actions, three are known as acaricides (abamectin , ethion and chlorfenapyr), one pyrethroid (cyhalothrin), one mineral oil(Nat- 1) and one plant extract (Allium sativum) against the eggs and adult females of the two spotted spider mite, Tetranychus urticae and adult females of their predators Amblyseius gossipi, Phytoseiulus macropilis and Stethorus gilvifrons using leaf- disc dip technique.The results indicated that Abamectin has a special position in mite chemical control or in integrated mite management because of its high toxic effect and it`s high toxicity index among different mite control agents. A.sativum extract was the least toxic compound to adult female T.urticae. Abamectin and cyhalothrin have a special effect on eggs of T.urticae and considered the best compounds that have a special importance in integrated mite management.The mineral oil Nat-1 was more toxic to egg stage of T.urticae than A. sativum extract. Nat-1 and A.sativum extract were the most safe compounds to the adults of predatory mites A.gossipi and P.macropilis and the predatory insect S.gilvifrons. Chlorfenapyr has the highest selectivity index and highest selectivity ratio in spite of its low safety values, so it can be recommended in IPM programs. Cyhalothrin,ethion, Nat-1 and A.sativum were the next compounds after chlorfenapyr in their selectivity ratio values , but Nat-1 has a special position and considered a promising oil in mite control programs. Abamectin has the least values of selectivity index and selectivity ratio and it's low safety index make us to keep it in mined under certain conditions (in case of rare predators with high level of phytophagous mites).
https://jppp.journals.ekb.eg/article_86970_9a6f2be1dc06ad53f4c9325904a65b6d.pdf
2010-12-01
1049
1063
10.21608/jppp.2010.86970
A.
Keratum
1
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
A.
Hosny
2
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
Nahed
Hasan
3
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
ORIGINAL_ARTICLE
COMPARATIVE EFFICIENCY OF PESTICIDES AND SOME PREDATORS TO CONTROL SPIDER MITES: II- BIOLOGICAL AND BEHAVIORAL CHARACTERISTICS OF PREDATORS Stethorus gilvifrons, Amblyseius gossipi AND Phytoseiulus macropili ANd THEIR HOST TWO SPOTTED SPIDER MITE, Tetranychus urticae UNDER SOME CHEMICALS TREATMENTS.
The effect of sub lethal doses of six compounds, three acaricides (abamectin, ethion and chorfenapyr),one pyrethroid (cyhalothrin),one mineral oil (Nat- 1) and one plant extract (Allium sativum)on somebiological and behavioral characteristics of the two spotted spider mite,Tetranychus urticae and adult female of predators Stethorus gilvifrons, Amblyseius gossipi, and Phytoseiulus macropilis was examined. The results indicated that Cyhalothrin was the most effective compound tested on egg deposition, which is beneficial for some IPM programs away from predators’ employments. A. sativum extract has the least effect on egg deposition that confers a chance to produce eggs enough for predation including egg mite, the preferable stage, for some predators. Ethion, chlorfenapyr and abamectin are considered ideal from the biological point of view since they decreased egg deposition to a suitable level and the character is needed for any integrated mite management program. Nat-1 is the best compound that has a moderate effecton egg deposition of spider mite which gave these compound special importance in integrated mite management. Nat-1 and A.sativum extract exhibited the least effective ovicidal action. The ovicidal effect of Chlorfenapyr and abamectin were about the same against the egg stage of spider mite. Cyhalothrin and ethion werehighly toxic compounds that caused the highest decrease in egg hatchability. Cyhalothrin and abamectin were the most effective on prey egg consumption, predator egg production and predator's egg hatchability of three predators. Ethion and chlorfenapyr occupy the next position in prey egg consumption, predator egg deposition and predator's egg hatchability of three predators. Nat-1 and A. sativum extract were the least effective compound in prey egg consumption, predator egg deposition and predator's egg hatchability of three predators.Also, Nat-1 and A.sativum extract were the safest compounds that allowedthe predator's egg to hatch producing the next stages necessary to thebiological agent to minimize prey populations.
https://jppp.journals.ekb.eg/article_86971_bee424deccc070433c17caf7da1816a2.pdf
2010-12-01
1065
1085
10.21608/jppp.2010.86971
A.
Hosny
1
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
A.
Keratum
2
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
Nahed
Hasan
3
Pesticides Dept., Fac. Agric., Kafr El-Shiekh Univ.
AUTHOR
ORIGINAL_ARTICLE
EVALUATION OF SOME SWEET SORGHUM GENOTYPES TO STEM CORN BORERS RESISTANCE WITH PRESENCE OF MORPHOLOGICAL AND CHEMICAL CHARACTERS
This work was conducted in the AgriculturalExperimentationCenter, Faculty of Agricultural, Al-AzharUniversity, Assiut Branch, during two successive seasons 2007 and 2008. Fifty three genotypes of sweet sorghum(Sorghum bicolor.L) were screened to find out how much each of the resistance variables affects the genotypes resistance against corn and sugar cane borers namely, (Sesamia cretica. Ledder and Chilo agamemnon.Bleszyncki.). The tested trits were plant height, leaves number and number of days to 50 % flowering, T.S.S. %, sucrose % and purity %. Data obtained indicated that the tested genotypes could be divided into four groups according to their susceptibility to borer infestation. The grouping pattern was as follows: (1) highly resistant group (HR) which contained twelve genotypes; (2) moderately resistant group (MR) which contained thirteen genotypes; (3) low resistant (LR) group which contained twenty genotypes and (4) highly susceptible group (HS) which contained eight genotypes. Highest plant were the genotypes 14R3A, Brandes, 14R1, Wily, 187 and 191 these genotypes significantly surpassed the other genotypes. The earliest flowering was recorded in the follows: genotypes 202, 43, 185, 202R3, 204, 25, Wiley and 80, where the earliest of them was 202. The highest numbers of leaves per plant were recorded to the genotypes 174 and 7R3 followed by 197, 185, 186, 220, 14R3A, 142R3, 43, 134, 222, 203R3, 209 and 39R1. While, the lowest numbers of leaves per plant were obtained from the genotypes 25, 202R3 and 202. The genotype 39R1 recorded the highest percentage of T.S.S. %, while the genotype 44 recorded the lowest percent. The highest percentage of recorded sucrose was 18.2 % in genotype 199 followed by 17.9 %, 17.8 %, 17.6 %, 17.2 % and 17.1 % in genotypes 96, 109, 14R3A, 33 and 195R3, respectively, while the lowest percentage was obtained in the genotypes 44 and Wiley. The genotype 170R1 recorded the lowest percentage of purity and Wiley. On the other hand, the genotypes 33, 70, 199, 96, 187 and 39R3A recorded significantly higher percentage of purity in comparative to the other genotypes.
Generally, it could be concluded that the best promising genotypes lines were 195R2A, 203R3, 220, 25, 203, 74, 73, 199, 96 and 109, respectively. These lines had a high T.S.S % and sucrose %. Immunity and resistance against corn and sugar cane borers; they could be propagated to become a good varieties in Middle and Upper Egypt.
https://jppp.journals.ekb.eg/article_86972_4c46fd859a3a17d5afe4a61a9da71032.pdf
2010-12-01
1087
1097
10.21608/jppp.2010.86972
Sweet sorghum
stem corn borers
resistance
morphological and chemical characters
A.
Abd El-Raheem
arhim67@gmail.com
1
Plant Protec. Res. Inst., Agric. Res. Centre, Dokki, Giza, Egypt.
AUTHOR
M.
Ahmad
2
Agronomy Dep., Fac. Agric., Al- Azhar Univ., Assiut Branch, Egypt
AUTHOR
H.
Mohamed
3
Sugar Crop Institute, ARC, Malawy Station Res., Egypt.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF DIFFERENT PH VALUES OF SPRAY SOLUTION ON THE EFFICIENCYOF MALATHION, Beauveria bassiana AND EXTRATONE ON Aphiscraccivora
The toxicity of chemical insecticide; malathion, bioinsecticide; Beauveria bassiana and a plant growth regulator (PGR); Extratone at different pH values of spray solution and its effects on some biological parameters of adult Aphis craccivora under laboratory conditions were studied. Data showed that malathion at LC50 revealed more effective in acidic water, also revealed that, the ideal pH for water used for spraying fungi is alkaline (pH 8-10). Data indicated that the toxicity increased as a period after treatment, Malathion gave the maximum toxicity at pH 4 followed by pH 5 while Biovar gave the maximum toxicity at pH 10 & 8 but Extratone gave the maximum toxicity at pH values 4 followed by pH 5. Malathion at LC50 in acidic water decreased longevity, pre-parturition, parturition and post-parturition periods and mean numbers of nymphs of adult per female. Biovar decreased longevity, pre-parturition, parturition and post-parturition periods and mean numbers of nymphs of adult per female at pH values 10 & 8. Extratone decreased longevity, parturition periods and mean numbers of nymphs of adult per female but increased pre-parturition and post-parturition periods pH value 5.
https://jppp.journals.ekb.eg/article_86973_1bdd45eee340a735f28f72d2d1cf5b5b.pdf
2010-12-01
1099
1107
10.21608/jppp.2010.86973
Aphis craccivora
malathion
Beauveria bassiana
plant growth regulator (PGR)
Extratone
pH values
H.
Hashem
1
Plant Protection Res. Institute, Agric. Res. Center, Giza, Egypt.
AUTHOR
I.
Shokry
2
Fac. Sci., Zagazig Univ., Egypt.
AUTHOR
K.
Hussein
3
Fac. Sci., Zagazig Univ., Egypt.
AUTHOR
Rehab
El-Gendy
4
Plant Protection Res. Institute, Agric. Res. Center, Giza, Egypt.
AUTHOR
ORIGINAL_ARTICLE
LATENT EFFECTS OF SOME PESTICIDES AND PLANT GROWTH REGULATOR ON COWPEA APHID, Aphis craccivora KOCH (HOMOPTERA: APHIDIDAE)
The latent toxicity of chemical insecticide; malathion, bioinsecticide; Beauveria bassiana and a plant growth regulator (PGR) Extratone were studied on some biological parameters of adult Aphis craccivora under laboratory conditions. The obtained results revealed that the two sub-lethal concentration 0.01 and 0.1 ppm sub LC50 (0.73 ppm) of malathion decreased each of the mean longevity of adult (one day old), mean offspring in addition to pre-parturition, parturition and post-parturition periods in comparison to the control. Eventually, both concentrations reduced the mean numbers of offspring of adult per day. B. bassiana at concentrations (200ppm) at (100ppm) decreased each of the mean longevity of adult, number of offspring, pre-parturition and parturition but increased post-parturition periods in comparison to the control. Both concentrations ofB.bassiana treatment reduced the mean number of offspringof A. craccivora (one day old)during longevity per day. Extratone at recommended concentration decreased the duration of A. craccivora, increased the pre-parturition period and decreased the parturition period, Post-parturition period, the mean longevity of A. craccivora and the mean number of offspring of each A. craccivora adult female
https://jppp.journals.ekb.eg/article_86974_5771807600f64e802c4572c42bbfd507.pdf
2010-12-01
1109
1117
10.21608/jppp.2010.86974
Aphis craccivora
malathion
Beauveria bassiana
plant growth regulator(PGR)
Extratone
pre-parturition
Parturition
post-parturition periods
H.
Hashem
1
Plant Protection Res. Institute, Agric. Res. Center, Giza, Egypt.
AUTHOR
I.
Shokry
2
Fac. Sci., Zagazig Univ., Egypt.
AUTHOR
K.
Hussein
3
Fac. Sci., Zagazig Univ., Egypt.
AUTHOR
Rehab
El-Gendy
4
Plant Protection Res. Institute, Agric. Res. Center, Giza, Egypt.
AUTHOR