Biological Control of Root-Knot Nematode, Meloidogyne Incognita on Cucumber

Abstract

         The current study supported the possibility of nematode control by using some of non-chemical control which gave a very promising results especially when compared with the chemical compounds. Soil amendments with an additive plant materials considered strategy for improving the properties of the soil were used as dried leaves from resistant plants; Eucalyptus globules, Tagetes erecta, and Allium sativum which were found reduced significantly the nematode population of Meloidogyne incognita on cucumber plants by (86.3, 85.0, 84.6%) . Results showed also that all bio-agents treatments of fungi Artrobotrys oligospora , Paecilomyces lilacinus, Glomus faciculatum and antagonistic plants were significantly reduced M. incognita in soil and on cucumber roots. The highest effect on M. incognita in soil and on cucumber plants with the tested fungi ,G.faciculatum ,A.oligospora and P.lilacinus reached to (87.7, 85.4 and 84.5%) respectively using the highest concentrations. Eucalyptus globules and Allium sativum were most effective in reduction the nematodes population of M. incognita in soil and on cucumber roots by (86.3, 85.1%). Several antagonistic fungi are known to destroy the eggs of M.incognita such P.lilacinus, A.oligospora ,and G. faciculatum when added to the plants together were more effective against nematodes population than each treatment separately. All the treatments were induced remarkable improvement in plants growth parameters of cucumber. The highest length of shoot and increase in fresh weight of whole cucumber plants by ( 75.9,73.8%) . was associated with the two combinations of G.faciculatium plus E.globules and A.oligospora plus A.sativum