Author: M. ASLAM

Publishing Date: 2010

E-ISSN: 0255-7576

Volume: 28 Issue: 1

ABSTRACT:

Seeds of Single Cross Hybrid 10 maize, (Zea mays L.) were grown in silty elay loam soil naturally infested with Pratylenchus zeae Graham during two successive seasons, 2007 and 2008. At each season the initial nematode population densities were estimated in 100 microplots which were randomly selected to obtain different nematode population densities. The nematode population densities ranged from 250 to 1000 individuals per kg soil in the first season, while from 250-1600 in the second season. No correlation between maize yield and the initial nematode population was found in both growing seasons (2007 and 2008). Such reductions in yield were observed at the second season but they were insignificant. Accordingly, neither damage threshold nor tolerance limit was detected within the tested initial P. zeae population densities.