Kök-ur nematodları [Meloidogyne incognita (Kofoid & White) Chitwood]'na karşı savaşta bazı bitki kısımlarının etkileri üzerine araştırmalar

Abstract

Summary Investigations on the effects of some different plant materials in control of Root-knot nematodes [Meloidogyne incognita (Kofoid & White) Chitwood] This study was conducted during 2006-2007 as pot experiment in order to investigate the possibilities of some alternative methods against root-knot nematodes in the climatized room and greenhouses at Plant Protection Department, Agricultural Faculty, Ege University. The main material of experiment consisted of root-knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood] infected tomato roots and soils, “Rio Grande” cv tomato plants, the leaves of castor oil plant [Ricinus communis L. (Euphorbiaceae)] and oleander [Nerium oleander L. (Apocynaceae)], the fruits of squirting cucumber [Ecbalium elaterium L. (Cucurbitaceae)] and whole plants of American marigold [Tagetes erecta L (Asteraceae)]. According to the findings obtained this experiment, it was determined that the all plant material treatments have less gall index value and placed statistically (P≤0,05) in different group compared with positive control. The least gall index value was determined in the characters in which the leaves of castor oil plant amended the soil (2,8 ± 0,20), placing in the same group with the control plants used with nematicides (3,0 ± 0,39) and evaluated as the most effective treatment. Besides this, in the evaluation done at the end of this experiment in terms of the numbers of second stage juvenile of root-knot nematodes, there were no nematode juveniles in the soil of castor oil plant characters. In the other plant treatments, there were less numbers of second stage juvenile of root-knot nematodes and placed statistically (P ≤ 0,05) in different group compared with positive control treatments. In terms of plant growth characters such as plant height, compound leaves, root growth scale