A field experiment was conducted in the 2 × 3 m plots to determine the effect of different initial population densities of Meloidogyne javanica on growth parameters and yield of okra (Abelmoschus esculentus; cv. Soltani) in 2013. This research was carried out based on completely randomized design (CRD) with five replications using a geometric series of 14 nematode population densities (0 to 512 eggs or second stage juveniles (J2) / cm3 soil). The plants died at high levels of nematode population (> 256). The relative shoot fresh and dry weight and relative yield fitted the Seinhorst damage model and the tolerance limit for those traits was 0.34, 0.33 and 0.28 eggs or J2 / cm3 soil, respectively. The maximum multiplication rate was 749 and the equilibrium density was 159 eggs or J2 / cm3 soil. Nematode reproduction factor was negatively correlated with the initial populations as the highest multiplication was occurred at the lowest initial population densities. Damage threshold (10% yield loss) of okra to M. javanica was estimated as 0.85 eggs or J2 / cm3 soil which represented the susceptibility of okra plant to M. javanica.
Ahmadi, H., & Moosavi, M. (2017). The relationship of initial population densities of Meloidogyne javanica and damage level on okra (Abelmoschus esculentus). Iranian Journal of Plant Pathology, 53(4), 385-398.
MLA
H. Ahmadi; M.R. Moosavi. "The relationship of initial population densities of Meloidogyne javanica and damage level on okra (Abelmoschus esculentus)". Iranian Journal of Plant Pathology, 53, 4, 2017, 385-398.
HARVARD
Ahmadi, H., Moosavi, M. (2017). 'The relationship of initial population densities of Meloidogyne javanica and damage level on okra (Abelmoschus esculentus)', Iranian Journal of Plant Pathology, 53(4), pp. 385-398.
VANCOUVER
Ahmadi, H., Moosavi, M. The relationship of initial population densities of Meloidogyne javanica and damage level on okra (Abelmoschus esculentus). Iranian Journal of Plant Pathology, 2017; 53(4): 385-398.
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