Potential of Azospirillum brasilense, Bacillus megatherium, Glomus mosseae
and Trichoderma Viride singly or Concomitantly For Control of Root-Knot Nematode
Meloidogyne javanica Infecting Sugar Beet

• Maareg(1) M.F.; M.H. Aly(1) ; Manal. Y. Hussein(1) and Tantawy, Eman.A(2)
• (1)Sugar Crop Research Institute, ARC, Giza, Egypt.
• (2)Soils & ,Water and Environment research Inst., ARC, Giza, Egypt.
• The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.

Abstract

Potential of Azospirillum brasilense, Bacillus megatherium, Glomus mosseae and Trichoderma viride were evaluated singly or concomitantly for control of root-knot nematode, Meloidogyne javanica infecting sugar beet plants grown in pots. Results showed that A. brasilense significantly suppressed number of nematode galls and eggmasses on sugar beet roots as well as increased sugar beet plant growth, quality characters, nitrogen content and sugar yield compared to nematode inoculation and other microbial treatments. Among the concomitant microbial treatments, A. brasilense , B. megatherium G. mosseae and T. viride treatment gave better results than single ones. Therefore, significant improvement in plant growth (by 56 % in fresh and dry of roots), total N, P and K content (by 38.73, 31.03 and 29.87 %, respectively) , quality characters (by 38.00 in sucrose and 22.30 in purity %) and sugar yield by 173.9 %, as well as suppressed number of galls and eggmasses by 90.7 and 89.4 %, respectively. This makes the combined use of the four tested microbial promising biocontrol method for root-knot nematodes in agriculture and may be considered in integrated nematode management (IPM) programs.