M.A. Elwakil's scientific contributions

Publications (25)

Article
Full-text available
Five isolates of Cephalosporium maydis were used in this study. Pathogenicity test showed that these isolate were differed in their virulence on maize plants. The most virulent isolates were 5 and 3 followed by 4, while isolate 1 and 2 were the least pathogenic ones. The influence of transparent polyethylene mulching on soil temperature in field ex...
Article
Aspergillus flavus, A.terreus and Penicillium expensum were the soil inhabiting fungi isolated from soil of the Agriculture Experiment Station Located at Mansoura University Campus at a depth of 1-5 inchs. The cultural filtrates of A. flavus and A.terreus reduced the growth of wheat and maize seedlings. The length of the seedlings sharply decreased...
Conference Paper
Full-text available
A survey of plant pathogenic fungi associated with naturally-infected waterhyacinth (Eichhorni crassipes) was coducted at different sites in Egypt. Two hundred fungal isolates belonging to differed genera were isolated. Alternaria alternata, isolate number 5, was found to be the best candidate for biological control of waterhyacinth, both under gre...
Article
Full-text available
Cultures of A.tumefaciens were sensitive to Ampicillin, Cloxacillin, Kanamycin, Streptomycin, Gentamycin, Erythromycin, Chloramphenicol, Thiamphenicol, Rifampicin, Tetracycline, Oxytetracycline, Deoxytetracycline, Septrin, Sulfisoxazole, Nalidixic acid, 5-Fluorouracil, Crotothanc, Carboxin, Parnon, Plantvax, PPO73, BAS 31708F, Chlorthion and Cyolan...

Citations

... lupin requires relatively large amount of phosphorus fertilizer for its effect on pod formation, maturity and promoting growth of the root system. Sharief et al. (1997) reported that increasing phosphorus fertilizer rates up to 31 kg P2O5 /feddan increased plant height, stem diameter, number of branches and pods per plant, 100-seed weight, seed yield per plant and feddan. Hafiz and El-Kholy (2000) and Mokhtar (2002) reported that increasing phosphorus from 15.5 to 31 kg /feddan increased lupin yield components and seed /feddan. ...
... Studies on the susceptibility of prokaryotes to several bioactive compounds such as antibiotics (Jorgensen and Ferraro, 2009), cytostatics (Marhan, 1995), fungicides (Bending et al., 2007), insecticides (Malathi et al., 2017), and nematicides (Abo-El- Dahab et al., 1977) are performed frequently. To our knowledge literature systematically addressing bacterial sensitivity toward nitriles and their degradation products is rare. ...
... These suggest that in the UK, the pathogen will encounter suitable conditions to infect F. japonica in the field. In addition, an important prerequisite for any potential biological control candidate is determining the plant age at which the weed is more susceptible to disease (Holcomb, 1982;Watson and Wymore, 1990). Results from this study demonstrated that younger leaf ages of 7-12 days after opening (category 2) were most susceptible to M. polygoni-cuspidati and that leaves became more resistant with age. ...
... Исходя из всего этого, на первом этапе моделирования скорость роста гриба была выбрана постоянной. Мы приняли, что средняя скорость роста гриба при оптимальных условиях на различных субстратах -приблизительно равна 0,5-3 мм в час, или 1 см в день [14][15][16][17][18][19][20][21]. ...
... In the laboratory, fungi were isolated using a method modified from Elwakil et al. (1989), Mohan Babu et al. (2002), El-Morsy (2004), Dagno et al. 2011 andHill (2012a). Approximately seven leaves for each diseaseassociated sign per site were thoroughly washed under Rating (%) Severity characteristics 0 ...
... In many investigations, auxins were found to induce cambial activity e.g. Sorokin et al. (1962), Digby and Wareing (1966), Esau (1977), El-Banna (1985), Arafa et al. (1987) and Mohamed et al. (1993). Sorokin et al. (1962) found that IAA stimulated cell division in the vascular cambium and initiated some intervascular cambium in segments from etiolated pea internodes. ...
... Indeed, various control methods have been suggested to cope with LWD, some of which showed promising results in reducing the disease outcome in commercial fields. These methods include watering the field [27], balanced soil fertility [28,29], soil solarization [30], allelochemical [14], biological [31][32][33][34][35][36][37][38], and chemical options [39,40]. Lately, new antifungal compounds (such as the resistance inducer beta-sitosterol, chitosan nanoparticles, and silica nanoparticles) have been suggested against the LWD pathogen [38,41,42]. ...
... Based on the literature search, previous studies reported that A. alternata causes diseases on different hosts in Egypt, i.e. leaf blight of water hyacinth (Shabana et al. 1995) and leaf blight of jojoba (Ibrahim et al. 2017). It was also isolated from black sand (Sharaf 2005), and from Red Sea in Egypt (Hawasa et al. 2015), and reported to be a principal pathogen of potatoes in Egypt (Droby et al. 1984). ...