2024-03-29T01:04:29Z
https://jppp.journals.ekb.eg/?_action=export&rf=summon&issue=13119
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
5
DISSIPATION OF PENDIMETHALIN BY Bacillus megaterium
E.
Abdel – Moteleb
Nahed
Hasan
One strain of microorganisms was isolated from soil previously treated with pendimethalin using enrichment techniqueand identified as Bacillus megaterium (E22). The effect of pH and temperature on the growth ability of the tested strain was investigated. The results showed that the optimum pH and temperature for the growth of pendimethalin degrading strain were 7 and 30 °C, respectively. Some concentration of pendimethalinwas removed by B. megaterium remove from mineral liquid medium with half-life of 5.6 days. Pendimethalin half-life was 53.4 days in untreated mineral liquid medium as control. Also, there is no toxicity of pendimethalin detected on Rhizobium leguminsarum biovar viciae as test microorganism in the supernatant after 28 day of treatment with B. megaterium. The results suggest that bioremediation by B. megaterium isolate was considered to be effective method for detoxification of pendimethalin herbicidein aqueous media.
Pendimethalin
Soil
bioremediation
Phytotoxicity
seedling mortality
2013
05
01
463
472
https://jppp.journals.ekb.eg/article_87394_c11f2ce4e9eac4e88de55471b0b2d21e.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
5
INSECTICIDAL ACTIVITY OF THREE PLANT EXTRACTS AGAINST Trogoderma granarium(Khapra beetle) IN WHEAT GRAINS WITH TOXICITY EVALUATION
Sahar
Ibrahim
Extracts of three plant species were tested under laboratory conditions for their ability to protect wheat (Triticum spp.) grains against the insect Trogoderma granarium . The insect was reared and tested on whole wheat grains with respect to the larvae,pupae and adult’s mortality, and emergence.. Furthermore, the safety of the most effective plant extracts was evaluated with respect to biochemical changes in rats. The results revealed that Chenopodium ambrosioides followed by Eucalyptus gluaca extracts were the most effective against T. granarium with respect to insect mortality and progeny relative to the control. These extracts also showed low toxicity on treated rats relative to control with respect to biochemical changes . The results suggested that these extracts may be a safe alternative to insecticides
control
Stored products
safety
insect plant extracts, Khapra beetle
2013
05
01
473
483
https://jppp.journals.ekb.eg/article_87396_7bb941c855449500c2a5cbf12da76c18.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
5
MANGEMENT OF MELOIDOGYNE INCOGNITA ON OKRA PLANTS USING NICKEL SULPHATE UNDER GREENHOUSE CONDITIONS.
S.
Gad
Impact of five nickel sulphate concentrations i.e. 1, 2, 4, 8 and 16 ppm as soil drench in comparison with oxamyl on plant growth parameters of okra plant (Abelmoschus esculentus) cv. Hyper Doki 1 infected with Meloidogyne incognita and its development was evaluated under greenhouse conditions at 30±3ºC. Results revealed that all tested treatments improved okra plant growth characters and reduced nematode criteria as well. In general, a gradual decline of plant growth increase was detected by the increase of tested nickel sulphate concentrations that accompanied with high percentage increase in reduction of nematode criteria. Among tested nickel sulphate applications, one ppm significantly overwhelmed other treatments in improving plant growth parameters with values of 31.0, 38.0 and 5.3% for total plant length, fresh weight of the whole plant and shoot dry weight, respectively. Moreover, plant receiving 16 ppm / plant accomplished the highest reduction percentage in tested nematode parameters that averaged 82.1, 67.6 and 70.7%, for juveniles in soil, galls and eggmasses numbers, respectively. Meanwhile, oxamyl ranked first in suppressing nematode parameters with values of 94.2, 90.2 and 94.9% for nematode population (J2), galls and eggmasses numbers as well as fourth in the increment of plant growth criteria, respectively.
Nickel sulphate
okra plant
Oxamyl
Meloidogyne incognita
2013
05
01
485
492
https://jppp.journals.ekb.eg/article_87397_a09afa31795d91cfed2f3192a402cff4.pdf
Journal of Plant Protection and Pathology
2090-3677
2090-3677
2013
4
5
BIOLOGICAL ACTIVITY OF TWO CRUDE EXTRACTS FROM Bauhinia purpurea AGAINST Spodoptera littoralis (BOISD.)
A.
El-Sabrout
O.
El-Ansary
G.
Gadelhak
Magda
Salem.
Effects of butanol and petroleum ether crude extracts of Bauhinia purpurea on Sopdoptera littoralis were studied by feeding method for the concentrations of 5, 10, 50 and 100 ppm. The results showed reduction in the pupae weight values of S.littoralis, these values were between 196.40 to 136.67 mg while it weighed 257- 260.33 mg in the control. The inhibition of the adult formation percentages were ranged between 43.33 to 93.33%. The fecundity, fertility and spermatophores numbers were studied and the mating possibilities were carried out for the adults resulted from the treated larvae with the previous tested concentrations of petroleum ether crude extract of Bauhinia and compared with the control. The numbers of eggs laid were reduced and ranged from zero to 285.13 eggs per female, while it was 1186.52 eggs per female in the control with hatchability percentages ranged from zero to 87.2%, while it was 97.6 % in the control. The histological studies illustrated heavily destruction of the reproductive structure of male and female when the both extracts of Bauhinia were applied. Also, The nutritional indices were calculated, the relative growth rate (RGR) values were reduced between 38.77 to 22.44 mg/day, while it recorded 58.4 - 84.45mg/day in the control. The efficiency of conversion of digested food (ECD %) values were reduced between 60. 96 to 91.32, while it recorded 166.03 - 201 in the control. The feeding deterrence index (FDI) values at 100 ppm were 41.64 % with butanol and 42.38% with petroleum ether crude extract of Bauhinia. On the other hand, the effect of butanol crude extract of Bauhinia on chitin formation caused inhibition in the larval growth of the cotton leafworm. The chitin formation ratio value displayed 31.505 mg/gm for the control, while it was 18.723 mg/gm for the Bauhinia butanol extract at the concentration of 50 ppm.
Bauhinia extracts
Spodoptera littoralis
Nutritional Indices
fecundity
fertility
spermatophores and chitin formation
2013
05
01
493
507
https://jppp.journals.ekb.eg/article_87398_e759f5cc4a565bb611b811486a86c786.pdf