FUW TRENDS IN SCIENCE & TECHNOLOGY JOURNAL
(A Peer Review Journal)
e–ISSN: 2408–5162; p–ISSN: 2048–5170
keywords: Corchorus olitorus, density, inoculum, Meloidogyne, Nematode, root-knot.
Field trials were conducted in 2014 and 2015 planting season to evaluate the effect of inoculum density of Meloidogyne incognita on the severity of root knot disease on Jute mallow (Corchorus olitorus) in nematode infested soil. The influence of four inoculum densities viz; 1000, 2000, 3000, 4000 of M. incognita (root-knot nematode) juveniles was studied. The result shows a significant ( P=0.05) reduction in the number of leaves, number of nodes, root length, stem girth and root weight with increase in the amount of M. incognita Juveniles. The number of nematodes in 10 g of root and root gall index however, increase significantly with increase in the number of M. incognita juveniles. These results reveals that exposure of Jute mallow to higher level of nematode population cause more damage to the crop resulting in reduction in its productive capacity.
Abad P, Gouzy J, Aury MJ & Castagnone-Sereno P 2008. Genome sequence of the metazoan plant-parasitic nematode Meloidogyne incognita. Nature Biotech., 26: 909-915. Coyne D, Nicol J & Claudius-Cole A. 2007. Practical Plant Nematology: Field and Laboratoty Guide. IITA, Ibadan, Nigeria, p. 82. Daiber KC 1990. Effects of egg density on the population dynamics of Meloidogyne incognita and M. javanica on growth and yield of tomatoes. Phytophylactica, 22: 303–6. Fondio L & Grubben GJH 2004. Plant Resources of Tropical Africa 2. Vegetables. PROTA Foundation, Wageningen, Netherlands/Backhuys Publishes Leiden, Netherlands/CTA, Wageningen, Netherlands, pp. 217 – 221. Hooper DJ, Hallmann J & Subbotin SA 2005. Methods for extraction, processing and detection of plant and soil nematodes.In: Plant and soil nematodes in subtropical and tropical Agriculture. CAB Int., Walingford, UK, 2: 53-86. Khan HR, Ahmad AS, Akhtar A, Mahmood TB & Niaz T 2000. Effect of inoculum density of Meloidogyne incognita and plant age on the severity of root-knot disease in tomato. Int. J. Agric. & Bio., 2(4): 360-363. Ndlovu J & Afolayan AJ 2008 Nutritional analysis of the South African wild vegetable Corchorus olitorius L. Asian J. Plant Sci., 7(6): 615-618. Oluwatayo JI, Asiedu R & Adesiyan SO 2011. Studies on population build-up of Scutellonema bradys in Dioscorea species. African J. Root & Tuber Crops, (91): 24. Philis J 1990. The efficacy of nematode resistant tomato cultivars to Meloidogyne javanica under green house conditions. Nematol. Medit., 18: 209–11. Schippers RR 2000. African indigenous vegetables: An overview of the cultivated species. University Greenwwish. England, pp. 193–205. SPSS 2011. IBM SPSS Statistics Base 20, IBM Corporation, USA. Wonang DL & Akueshi CO 1990. Relationship between population densities of Meloidogyne incognita and crop yield in tomato. Int. Nematol. Network News letter, 7: 38–41.
