کنترل شیمیایی نماتد ریشه گرهی روی انار در شهرستان ساوه

Root-knot nematodes of the genus Meloidogyne are more widely distributed throughout the world than any other major group of plant parasitic nematodes. Their distribution and economic importance are purported to be related to biological and environmental factors favorable to Meloidogyne spp Root knot nematodes (Meloidogyne spp.) are one of the factors that damages to pomegranate and causes high losses. Application of chemical nematicides are one of the effective of root-knot nematode control. In this study trials of chemical control were carried out in 20015-16 on pomegranate in Saveh, Markazi Province, Iran. A pomegranate orchard was selected and effects of 3 nematicide: cadosafus G. 10% in 3 doses (first year 2 doses), fenamifus C.S 20% (Nemacor) in 3 doses, and sodium-tetra-tiocarbonate S.L. 40% ( Enzone)in 2 doses was investigated. Experimental design was completely randomized block with 4 replications. Initial population of nematodes was assayed with sampling from soil before, 2 month and 4 month treatments. Treatments were carried out one time, in the initial of the growing season. Root-knot nematodes were extracted from soil and root, and were counted numbered in root and soil. Significant difference was not observed between treatments and Check in nematode larva 2 stages population in soil in the first year, and significant difference was observed between treatments and Check in second year 2 months after treatment, but no significant difference 4 months after treatment. sodium-tetra-tiocarbonate 30 Li/ha, and fenamifus, cadosafus were the most effective treatments respectively. No significant difference was observed between treatments and Check in yield in both years.