BIOLOGICAL CONTROL OF ROOT-KNOT NEMATODE Meloidogyne javanica ON SUNFLOWER PLANTS BY Trichoderma album AND Bacillus megaterium | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 1, Volume 32, Issue 6, June 2007, Page 4747-4756 PDF (675.44 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2007.219624 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Eman A. Hammad,; A. M. A. Zaid | ||||
| Plant Pathology Res. Institute, Agricultural Res. Centre , Giza, Egypt. | ||||
| Abstract | ||||
| Two Egyptian bioagents i.e. Biozeid ™ ( Trichoderma album in 10 x 106 spores / g. )and Bioarc ™ ( Bacillus megaterium in 25 x 10 6 cfu / g. ) were evaluated as bio-nematicides at the rate of 1.2, 2.0, 5.0,10.0 15.0, 20.0, 25.0 and 30.0 g. /l. against Meloidogynejavanica ( j2) under laboratory conditions ( 25 ± 2 ºC ) . In additions, three rates of both bioagents 20.0, 25.0 and 30.0 g. /l. and a mixture of them (10 g T. album + 10 g. B.megaterium /l. ) in comparison with the nematicides, Oxamyl (Vaydate 24 %) were then tested against M. javanica infecting sunflower cv. Giza 35 as well as plant growth response under greenhouse conditions( 30 ± 5 ºC ) . In Vitro, all tested rates of both bioagents have pronounced activity against M. javanica (j2), their bio-efficacy were positively increased as exposure time and rates increased , since T. album or B. megaterium gave 85.9 % or 80.7 % mortality of M. javanica ( j2) at rate 30.0 g. /l after 96 h. Under greenhouse conditions, all tasted treatments showed significant reduction in rates of nematode reproduction as well as increased in the reduction percentage of nematode population whereas, Oxamyl achieved the lowest value of rate of nematode reproduction (0.07) and the highest value of nematode reduction percentage (95.0 %). Non significant differences were recorded between the two highest rates ( 25.0, 30.0 g / l ) of both bioagents, T. album and B. megaterium or their mixture or Oxamyl in this respect. Moreover, these two rates and Oxamyl treatments, also played an important role in the improvement of plant growth parameters as compared to nematode alone. It was concluded that both bioagents tested at the highest rate of 30 g/l. obviously improved plant growth in sunflower and reduced nematode reproduction and density. | ||||
| Keywords | ||||
| : Biozeid; Trichoderma album; Bioarc; Bacillus megaterium; Meloidogyne javanica; bioagents and sunflower plant | ||||
|
Statistics Article View: 86 PDF Download: 168 |
||||
