Open AccessINFLUENCE OF SOIL PROPERTIES ON PLANT NEMATODE POPULATION DENSITY UNDER Chromolaena odorata FALLOW
Author(s) -
Segun I. Odeyemi,
S. O. Afolami,
Azeez Jamiu Oladipupo
Publication year - 2017
Publication title -
journal of agricultural science and environment
Language(s) - English
Resource type - Journals
eISSN - 2315-7453
pISSN - 2277-0755
DOI - 10.51406/jagse.v16i1.1694
Subject(s) - xiphinema , chromolaena odorata , helicotylenchus , biology , pratylenchus , population , agronomy , population density , nematode , ecology , nematology , weed , demography , sociology
Relationships between soil abiotic factors and population densities of plant parasitic nematodes spe-cies under planted fallow of Chromolaena odorata was investigated for 2 years. Soil samples were collected at 0 – 30 cm depth to determine population of nematode species and soil physico-chemical properties was done at test initiation and afterwards at 6 months interval for 2 years. Four genera of plant parasitic nematode species (Meloidogyne spp., Pratylenchus spp, Helicotylenchus spp. and Xiphinema spp) and two free – living (Rhabditids and Dorylaimus spp.) were identified in the fallow. Soil organic Matter and soil N were significantly higher at 2 years than at 6, 12 and 18 months. Popu-lation density of plant parasitic nematode species significantly reduce as the fallow period extend reaching minimum at 2 years of fallow. Highest percentage reduction of 90.3 % was observed in popu-lation of Xiphinema at 2 years of fallow, followed by Pratylenchus with 51.5 % reduction in population and lowest reduction of 44 % was observed in Meloidogyne population. Negative and significant rela-tionship existed between soil physico-chemical properties and population density of plant parasitic nematode species indicated that soil characteristics play an important role in the abundance, distribu-tion and structure of nematode communities.