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A greenhouse experiment was conducted to assess the impact of five commercial biopesticides on root knot nematode, Meloidogyne incognita infecting pepper plants cv. Kortoba. Biopesticides used in the present study were: Anti-Nema (Serratia marcescens) Bio-Arc (Bacillus megaterium), Bio-Zeid (Trichoderma album), Bio-Nematon (Purpureocillium lilacinum), and Nema-Stop (Streptomyces avermitilis), compared to chemical nematicide, Krenkel as well as untreated check. All biopesticides were applied as soil drench after nematode inoculation (1000 M. incognita second stage juveniles) which spread around the base of plant. Applications of such biopesticides achieved a significant (P≤ 0.05) improvement in plant growth parameters and significant suppression in nematode population. Bio-Arc recorded maximum values in improving total plant fresh weight (89.7%), plant length (123.0%), and shoot dry weight (143.8%), followed by Bio-Zeid. Also, Bio-Arc recorded the highest percentages of reduction in number of juveniles in soil, root galling and egg masses with values 66.06, 65.79 and 62.32% respectively comparing to nematode alone. Furthermore, it is also worth noting that the majority of treatments had the same values for both root gall and egg masses indices (2.0) compared to nematode alone (3.0). [ABSTRACT FROM AUTHOR]

Copyright of Journal of Plant Protection & Pathology is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Plant Protection & Pathology is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A greenhouse trial was conducted to study the performance of three bioa-compounds i.e. bioarc (Bacillus megaterium), biozeid (Trichoderma album) and protecto, Bacillus thuringinthis (Bt) on plant growth characters of squash plant cv. Eskandrany infected with 1000 eggs of the root-knot nematode, Meloidogyne incognita in comparison with oxamyl under greenhouse conditions (25±3ºC). Results indicated that all tested materials enhanced plant growth criteria and diminished nematode parameters as well. Biozeid gave maximum values of plant length (107.6%), number of flowers (73.1%), leaves/ plant (40.2%), total plant fresh weight (54.6%), shoot dry weight (92.9%), highest percentage reduction values of final nematode density (88.8%), number of galls, (79.9%), and egg-masses (93.6%), followed by bioarc. Moreover, plant receiving (Bt) showed a reasonable final population (87.0%) and number of galls (63.2%) and egg-masses (84.2%), comparing to nematode only. The reproduction factor of M. incognita on squash plant was adversely affected by the tested bio-products, since its values ranged from 0.12 for oxamyl to 1.1 for (Bt) vs 1.97 for nematode alone, where biozeid treatment gave the lowly RF value (0.22). [ABSTRACT FROM AUTHOR]

A greenhouse experiment was carried-out to evaluate the influence of three different grounded seed powders i.e. chicory (Cichorium intybus L.), artemesia (Artemesia sp.) and chrysanthemums (Chrysanthemum sp.) (Fam: Compositae) at three rates of 1, 2.5 and 5g/pot (plant) added as post-planting applications on growth of tomato cv. Alisa infected with Meloidogyne incognita compared to oxamyl at the recommended dose (0.3 ml/ pot) under greenhouse conditions of (27±3°C). Results indicated that all tested applications significantly improved tomato plant growth characters and reduced nematode criteria as well. Percentage increase values of tomato plant growth parameters increased and nematode population density diminished as the rates of such tested compounds raised from 1 to 2.5 and 5g/plant. Artemesia at 1, 2.5 and 5g/plant accomplished the highest percentage increase values of plant growth criteria as well as reducing final nematode population; whereas plants received chicory grounded seeds gave the least values in this respect . Moreover, artemesia treatment at 5 g/plant gained the least value of nematode reproduction factor (0.51) vs 2.15 for nematode alone. Meanwhile chemical analysis of N, P, K, total phenols and total chlorophyll was recorded and discussed. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Plant Protection & Pathology is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A pot experiment was conducted to evaluate the influence of certain oil-seed cakes i.e. fennel, sesame, anise or plant dry seed powder of red pepper as soil amendments in comparison with oxamyl or urea on controlling Meloidogyne incognita infecting eggplant seedlings under greenhouse conditions at 27 ± 5°C. Results indicated that all tested materials significantly improved the growth of eggplant and suppressing the number of galls, females and egg masses of M. incognita as compared to nematode alone. Moreover, anise oil-cake gave the best growth of total plant fresh and dry shoot weights as percentage increase (160.8 and 64%) followed by sesame oil-cake (143.5 and 64%), respectively. However, the highest values of percentage reduction for number of galls (64.2%), females (58.5%) and egg masses (55.7%) on eggplant roots were achieved by sesame-oil-cake application, followed by anise-oil-cake treatment with values of 63.0, 59.6 and 51.1% for the same nematode criteria, respectively. Meanwhile, oxamyl or urea treatment showed remarkable reduction percentages for nematode parameters tested. [ABSTRACT FROM AUTHOR]

A pot experiment was conducted to determine the influence of three of inoculum levels (1000, 2000 and 3000 J2 pot(-1)) of Meloidogyne javanica on nematode reproduction and host response of peanut plant cv. Giza 4 under greenhouse conditions at 30 +/- 5 degrees C. In general, nematode reproduction and host damage were both affected by the initial inoculum levels. The greater reduction percentage of plant fresh (57.7%), shoot dry (38.82) and pods weights (52.59%) and nodules numbers (73.33%) were recorded at inoculum level 2000 J2/peanut plant, when rate of nematode build-up reached the maximum value of 1.64. Regression analysis of Pi vs. rate of nematode build-up on peanut plants gave value of R2 amounted to 0.3193. On the other hand, when the initial inoculum level added increased up to 3000 J2/peanut plant, the percentage reduction of whole plant fresh weight (47.07%) and other growth parameters as well as nematode build-up (0.8) also obviously decreased.

Agrobacterium tumefaciens stimulated and Fusarium oxysporum f. sp. lycopersici inhibited development and reproduction of Meloidogyne incognita when applied to the opposite split root of tomato, Lycopersicon esculentum cv. Tropic, plants. The lowest rate of nematode reproduction occurred after 2,000 juveniles were applied and the fungus was present in the opposite split root. The effects of all three pathogens alone on the growth of roots and shoots of tomato plants were evident, but M. incognita had a greater effect alone than did either of the other pathogens. The length of split roots was reduced by the infection of M. incognita and A. tumefaciens or F. oxysporum f. sp. lycopersici. The number of galls induced by nematodes on roots was higher where the bacterium was applied and lower where the fungus was applied to the opposite split root.