Massoud, M., Khalil, M., Shawer, R., El-bialy, M., Saad, A. (2021). Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.). Alexandria Science Exchange Journal, 42(4), 789-797. doi: 10.21608/asejaiqjsae.2021.199393
Magdy Massoud; Mohamed Khalil; Rady Shawer; Mahmoud El-bialy; Abdel-fattah Saad. "Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.)". Alexandria Science Exchange Journal, 42, 4, 2021, 789-797. doi: 10.21608/asejaiqjsae.2021.199393
Massoud, M., Khalil, M., Shawer, R., El-bialy, M., Saad, A. (2021). 'Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.)', Alexandria Science Exchange Journal, 42(4), pp. 789-797. doi: 10.21608/asejaiqjsae.2021.199393
Massoud, M., Khalil, M., Shawer, R., El-bialy, M., Saad, A. Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.). Alexandria Science Exchange Journal, 2021; 42(4): 789-797. doi: 10.21608/asejaiqjsae.2021.199393
Biological Performance of Certain Bio-Agents, Fluopyram and Fosthiazate against Meloidogyne spp. on Guava Trees (Psidium guajava L.)
2Fungicides, Bactericides and Nematicides Department, Central agricultural pesticides laboratory, Agricultural research center
Abstract
In this study, the potential of some bio-agents, fluopyram and fosthiazate were investigated against root-knot nematodes (Meloidogyne spp.) on guava trees under field conditions for two successive seasons (2020 & 2021). The examined bio-agents were; Bio-Nematon® (Paecilomyces lilacinus), Bio Cure-F® (Trichoderma viridi), Bio Cure-B® (Pseudomonas fluorescens) and BIOTECT® (Bacillus thuringiensis var. kurstaki). The infection parameters of root-knot nematodes (Meloidogyne spp.) were recorded at 35 and 70 days after treatment. Results indicated that all the applied treatments suppressed the soil population density (J2/250g soil) at range of 68.75 to 88.85% during the 1st season, and from 57.72 to 92.92% during the 2nd season. Besides, the numbers of root galls were decreased at range of 60.22 to 77.11% and from 57.90 to 70.90% during 1st and 2nd seasons, respectively. Also, the number of isolated eggs from roots was decreased at range of 67.13 to 94.61% and from 51.37 to 88.45% during 1st and 2nd seasons, respectively. However, the content of total N, P and K (%) in leaves of guava trees was fluctuated during both seasons.
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