Author: A.E. ISMAIL AND W.M.A. EL-NAGDI
Publishing Date: 2005
Volume 23 Issue 2
All the evaluated biocides and latex-bearing plants significantly (p ≤ 0.05 and / or 0.01 levels) decreased the number of Rotylenchulus reniformis juveniles in soil, females and eggmasses on root, total final nematode population and consequently the rate of nematode buildup, and improved the growth and yield of chamomile plants as compared to untreated control. The reduction in the developmental stages and build-up of the nematode or increase in all plant
growth and yield parameters greatly varied according to the type of the tested material. Bacillus thuringiensis karastaki (the major component of Dipel 2x product) seemed to be the most effective biocides in controlling R. reniformis followed by Bacillus subtilis (the major component of Rhizo-N product) while, application of the active ingredient of Plant-Guard product, Trichoderma harzianumwas least effective. Also, chopped shoots of Pedilanthus rithymaloides gave highest reductions in numbers of juveniles, females, egg-masss and consequently the rate of build-up (92.6, 84.9, 82, 92.2 and 91.3%; respectively) followed by Cryptostegia grandiflora, Calotropis procera and Euphorbia pulcherrima. These materials also showed significant (p≤ 0.05 and / or 0.01) improvement in growth and yield of chamomile plants as compared to untreated control.