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Sirex ermak (blue-black horntail)
S. ermak is an important pest of Larix in Siberia and the Russian Far East, and is also found on other conifers. It attacks mainly stressed trees...
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Sirex noctilio (woodwasp)
In New Zealand between 1946 and 1951, during a severe drought, S. noctilio killed about 30% of radiata pine in 120,000 ha of plantations that had...
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Sitona discoideus
According to Allen (1971) in South Australia, damage can affect lucerne in three ways: loss of potential grazing or forage from established lucerne...
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Sitona lepidus (clover root weevil)
Despite its wide distribution in the Northern Hemisphere, S. lepidus does not appear to reach major pest status except on a local basis. However,...
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Sminthurus viridis (lucerne flea)
The first authentic record of the economic significance of S. viridis is that of Froggatt (1907) who mentioned that in 1896, a species allied...
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Sogatella furcifera (white-backed planthopper)
S. furcifera is an important pest of rice in the tropics and subtropics in Asia (Heinrichs, 1994). It attained major pest status after the...
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Solanum elaeagnifolium (silverleaf nightshade)
S. elaeagnifolium competes for moisture and plant nutrients with a variety of crops under both dryland and irrigated conditions. Marginal, dryland...
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Solanum mauritianum (tree tobacco)
The South American tree S. mauritianum has been introduced to Africa, Australasia, India and islands of the Atlantic, Indian and Pacific Oceans....
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Solanum torvum (turkey berry)
S. torvum is an invasive weed of pastures, roadsides and open native vegetation, and is occasionally found in cassava and other perennial crops in...
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Solanum tuberosum (potato)
Erect, juicy herb with numerous fleshy, robust, angular, branched stems up to 1.2 m tall and subterranean tubiform stolons. Root system usually...
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