2024-03-29T17:04:02Z
https://jppp.journals.ekb.eg/?_action=export&rf=summon&issue=25827
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Influence of Fertilization and Plant Density on Population of some Maize Insect Pests and Yield
Magda
Naroz
H.
Mahmoud
Soheir
Abd El-Rahman
Maize considered one of most important cereals in Egypt that used in consumed directly by humans. It is attacking by different insect pests and most important of these insects, aphids, thrips and corn borer that was influence yield size and quality. Field experiments were planted in early June 2019-2020 seasons at Assiut Governorate. Current study, effects of three fertilizers systems (synthetic, organic and mixture between synthetic and organic fertilizers) and three planting densities (5, 10 and 15 plant/Linear meter) on the population of insects and yield were investigated. Results indicated that mixture fertilizers had lowest mean number and infestation percentage of three tested insects at two seasons. Infestation% was higher in 1st than 2nd season. Mean numbers of thrips at mixture fertilizers were a highly significant than both synthetic and organic fertilizers. Addition that, highest yield of maize was recorded in mixture fertilizer at the two seasons (3783 and 3948 kg/feddan, respectively). Results showed that, mean numbers ofthree insect pests were increased with increasing plant density/Linear meter at the two seasons. Thrips population and aphids were significantly differences in threeplant densities (5, 10 and 15 plants/Linear meter) at the two seasons. The highest yield of maize in medium plant density (10 plant/Linear meter) recorded 3655 and 3768 kg/fed., at 2019-2020 season respectively. It is concluded that mixture fertilizer and plant density was 10 plants/Linear meter recorded lowest population of three tested insects and high yield of maize at the two successive seasons.
Maize
Synthetic fertilizers
organic fertilizers
Insect population
plant density
yield
2021
06
01
403
411
https://jppp.journals.ekb.eg/article_178935_cf4691c11e223c9ec36b7e8f50e14943.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Genetic Variability, Insect and Disease Resistance of some Promising Rice Genotypes
Marvet
Awadallah
A.
Taha
A.
Tahoon
An investigation was carried out during 2019 and 2020 at Farm of Sakha Agricultural Station, Kafrelsheikh, Egypt to study the genetic variation, heritability, genetic advance, correlation coefficient and evaluation the infestation by insects and diseases for fifteen rice genotypes. The results showed that Sakha 108, Giza 178, GZ10590-1-3-3-2, GZ10848-1-2-2-1 and Korea 27 yielded more than 10 t/ha compared to GZ10333-9-1-1-3 and GZ10778-17-1-6-1 that yielded 8.89 and 8.74 t/ha, respectively. Most of rice genotypes had good desirable values of milling%, except Korea 27 and GZ10686-2-1-3-4 that recorded 69.33 and 69.83%, respectively. The phenotypic variance was higher than genotypic coefficient of variance for all studied traits. The highest phenotypic and genotypic variances were observed in number of filled grains panicle-1. The phenotypic coefficient of variability averaged 0.99 % for hulling % and 19.35% for grain yield. Similarly, the genotypic coefficient of variability averaged 0.44% for hulling % and 19.24% for grain yield. Heritability in broad sense was high for most of studied characters expect hulling percentage. The genotype, Korea 27, GZ10590-1-3-3-2, GZ10778-17-1-6-1 and GZ10848-1-2-2-1 were recorded the highest values of dead hearts and white heads. Eighteen Pyricularia oryzae isolates were identified as four race-groups. Under artificial and natural inoculation with P. oryzae, Giza177, Giza178, Sakha108, GZ10598-9-1-5-5, GZ10101-5-1-1-1 and GZ10848-1-2-2-1 reflected a high level of resistance to rice blast, while for brown spot GZ10333-9-1-1-3, Korea 27, GZ10590-1-1-3-9-1 and GZ10590-1-3-3-2,for white tip nematode resistance were Korea 27, GZ10598-9-1-5-5.GZ10590-1-1-3-9-1 and GZ10590-1-3-3-2. Therefore, they could be utilized as donors for disease resistance in breeding programs.
rice
genetic variation
heritability
insect
diseases
2021
06
01
413
421
https://jppp.journals.ekb.eg/article_178937_07c7792e34ef51a82310b84de765f07a.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Some Ecological Aspects of some Piercing-Sucking Pests Infestation on Four Vegetable Marrow Varieties in Relation to their Histological Features and their Control and Evaluation of Yield
Sara
El-Deeb
Maha
El-Ghannam
Pansea
Azzam
Two field experiments were conducted during 2020 at the Plant Protection Research Station at Qaha, Qalubiya Governorate. Those included fluctuation in population growth rate of Bemisia tabaci, Aphis gossypii, Thrips tabaciand Tetranychus urticaein addition to evaluation of the susceptibility degree of 4vegetable marrow varieties (hybrid Aziad, hybrid Marseille, Askandrany and Amna)to infestation by previously mentioned pests. The study also included the application of lemon oil, ginger oil, fenugreek oil, green tea oil and egyxide plus(water soluble natural oil)for control of these each of pests. The 5oils (at 500 and 1000ml.)were mixed with 250gm hivit 80%WDG. Also, 5insecticides; Vapcomic 1.8%EC, Mobet, Trivap 75%WP, Oecos 3.2%EC and Hivit 80%were assayed at the recommended concentrations.Aziad variety could be fairly categorized as the highest susceptible(S)to infestation with the above mentioned pests of vegetable marrow plants, with means 31.61, 19.45, 1.76 and 2.31/leaf to B. tabaci, A. gossypii, T. tabaciand T. urticae, respectively/leaf.Obtained data indicated that A. gossypii recorded the highest growth rate 6.77, taking time difference 7days at Marseille variety. As for the anatomical measurements, those were the highest in case of Amna variety and the lowest in Aziad variety. Also, highest fruit yield was that of Amna variety and lowest in Aziad variety.The obtained records exhibited, that vapcomic and fenugreek oil+Hivit(1000ml+250gm)caused the significantly highest reduction against B. tabaci and A. gossypii counts on Aziad variety, as the recorded average of their reductions after 14days of first and second spray were(88.8 and 88.1%),(93.2 and 91.3%)and(96.2 and 95.2%), respectively.
aphid
whitefly
thrips
Spider-mite
Pesticides
biopesticides
2021
06
01
423
429
https://jppp.journals.ekb.eg/article_178939_281c63c606065a28af4bcfe9b77c0444.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Stability Study of some Fungicides and their Relevant Impurities in some Environmental Conditions
A.
Seloma
The effects of storage conditions on some fungicide pesticides, metalaxyl modified by mancozeb represented in acimaxyl 72% WP, and copper modified by mancozeb represented in triomax 66% WP were investigated. The results revealed that the degradation rates for acimaxyl 72%WP and triomax 66% WP differed during storage, with the calculated half-life values for acimaxyl being (149.48 days for mancozeb and 43.33 days for metalaxyl) and (113.64 days for mancozeb and 104.24 days for copper) in triomax. After 14 days at 54 0C, the effect of thermal storage on the synthesis of ethylene thiourea (ETU) in mancozeb was raised to 0.222% for acimaxyl and 0.160 % for triomax. Furthermore, the influence of oven temperature on storage 2,6 dimethyl aniline impurity in acimaxyl (mancozeb 64% and metalaxyl 8% ) was 0.020% before storage and 0.040% at the end of the experiment storage time. Before and after storage at 54 0C, the levels of lead, cadmium, and arsenic (mg/kg) as well as metallic copper were measured in triomax 66% (mancozeb 12%, and copper 29%). The levels of cadmium and arsenic were fewer than FAO limits, whereas lead was more than FAO limits. The data showed that metallic copper in triomax formulation remained generally consistent over time.
fungicides
relevant Impurities
Arsenic
cadmium
Lead
copper
2021
06
01
431
436
https://jppp.journals.ekb.eg/article_186689_c305e7859ed3ebbe006ce7f1bb8c08af.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Different Methods for Detection and Diagnosis of Tomato Spotted Wilt Tospovirus Infection of some Cucurbit Host Plants and its Main Vector of Thrips Species in Field and Greenhouse in Egypt
Elham
Khalifa
Seham
Moursy
E.
Risha
The study recorded for the first time in Egypt the presence of tomato spotted wilt virus (TSWV) on cucurbits, which was confirmed using several serological tests, like double antibody sandwich ELISA (DAS-ELISA); Dot-blot ELISA assay and Immuno capture polymerase chain reaction (IC-PCR). By using Dot blot immunoassay test reaction against TSWV antisera, the ability of thrips species Thrips tabaci (Lind), Thrips palmi (Karny), and Frankliniella occidentalis (Pergande), on the transmission of the (TSWV) were asserted. In the greenhouse, eleven plant species were determined as the host range of virus and field samples showed the similar symptoms. The mechanical transmission of TSWV showed a positive reaction bearing symptoms on the leaves of Cucumber, zucchini, smoke, datura and tomato plants 15-20 days after inoculation with transmission rates of 46.5, 40, 46.5, 46.5 and 86.5%, respectively. DAS-ELISA using antisera of TSWV showed that the greenhouse leaves samples were infected; otherwise, an amplification of IC-PCR products of 500 bp was detected by agarose electrophoresis of total RNA isolated from infected leaves.
Tomato spotted wilt virus (TSWV)
thrips
double antibody sandwich ELISA (DAS-ELISA)
Dot-blot ELISA
Immuno capture polymerase chain reaction (IC-PCR)
cucurbits
Egypt
2021
06
01
437
442
https://jppp.journals.ekb.eg/article_186685_c4cc9f128227b914e65a28f2349f5317.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2021
12
6
Field and Laboratory Study to Compare the Effect of some Compounds on Tetranychus urticae (Koch) and Tetranychus cucurbitacearum (Sayed) on Soybean Plants
H.
Abd El-Rahman
A.
Farag
Current experiments were conducted to assessment, the relative toxicity of four chemicals and action mechanism for two insecticides (Abamectin and Ethion), and two plant oils; Allium sativum (Liliaceae) oil and Melia azedarach (Meliaceae) oil against females adult and eggs of two spotted spider mite T. urticae and T. cucurbitacearum. In addition to evaluation the side effects of “sub-lethal dose” of these chemicals on “biological-aspects” for the tested insect stages “spider mites” using standardized method for bioassay. Sub-lethal doses effects of these chemicals on some biological-aspect were evaluated. Data obtained resulted that, abamectin gave highly toxic compound and ethion was in the 2nd rank, while A. sativum oil and M. azedarach oil showed the lower-toxic against females-adult of T. urticae, and T. cucurbitacearum. Also, the results showed that, the two compounds “abamectin and ethion” showed highly-toxic ovicide on egg-stages of T. urticae and T. cucurbitacearum, while A. sativum oil and M. azedarach oil, appeared least-toxic against eggs-stages of T. urticae, and T. cucurbitacearum. The results also, indicated that the high reduction percentage in eggs laying capacity with(63.19 and 62.94%) were found when females-adult of T. urticae and T. cucurbitacearum, treated with “LC50 value” of abamectin, while the lowest reduction (6.63 and 11.64 %) was obtained in case of the treatment with LC50 of M. azedarach of them. Abamectin and ethion were most effect against motile-stages, whilst M. azedarachtin oil, showed least-effect against motile-stages of T. urticae and T. cucurbitacearum, in field condition.
Abamectin
Ethion
Tetranychus urticae
Tetranychus cucurbitacearum
2021
06
01
443
446
https://jppp.journals.ekb.eg/article_191742_a6a6e7625816ba30fbe4e6636fdc2637.pdf