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Journal of Agriculture and Social Research (JASR)

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The Effect of Plot Size on Some Pratylenchus Penetrans (Phytonematode) Population Parameters

OA Aminayanaba

Abstract


Pratylenchus penetrans counts obtained from a rose field, sampled sequentially by decreasing the plot sizes were computed to obtain the respective sample means, variance and k-value of the negative binomial distribution. Plots 21 m x 80 m, 3.6 m x 3.6 m and 0.6 m x 0.6 m were sampled for the nematode. It is reported that the k-value is influenced by plot size (P < 0.05) and depends on the sample mean.



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