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Effects of soil fertility on abundance of green peach aphids on Maryland tobacco

, : Effects of soil fertility on abundance of green peach aphids on Maryland tobacco. J Econ Entomol 61(2): 387-391

Experiments were conducted to determine the effect of soil fertility on the fecundity and longevity of the green peach aphid, Myzus persicae (Sulzer), on southern Maryland (Type 32) tobacco. Studies of aphids caged individually on tobacco grown in soil with varying amounts of N, P, and K showed that as the amount of Nor Kwas increased in the soil, fecundity of aphids increased. Observations of population growth rates on confined portions of tobacco plants indicated that medium levels of N and P fertilization (90 lb./acre each) resulted in the most rapid population increase and the highest population density. Population growth rate and density were positively correlated with K fertilization. By varying the amount of 4-8-12 fertilizer applied to field plots of tobacco, it was possible to demonstrate a positive correlation between amount of fertilizer and the number of aphids on tobacco.


DOI: 10.1093/jee/61.2.387

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