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Sitobion avenae (wheat aphid)
Introduction S. avenae is found on numerous species of Gramineae worldwide, and is a pest of cereal crops in temperate regions. It...
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Striga angustifolia (witchweed)
S. angustifolia parasitizes sorghum, rice and sugarcane in India, Myanmar and Sri Lanka and has been noted to cause severe damage to each of these...
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Streptomyces ipomoeae (Streptomycete soil rot (pox))
The proportion of land used for sweetpotato production that is infested has not been determined and the levels of infestation, soil pH and soil...
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Saturnia pyri (giant emperor moth)
S. pyri has little economic impact. In Italy, S. pyri, which is usually only a very minor pest can, when the occasional outbreak occurs, rapidly...
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Swietenia macrophylla (big leaved mahogany)
The genus Swietenia is placed in the family Meliaceae, named after the genus Melia (Kribs, 1930). Three species are recognized in the genus, namely...
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Symmetrischema tangolias (tomato stem borer)
S. tangolias is a relatively new pest in Peru and Bolivia, but its importance has increased rapidly in recent years. It is now regarded as an...
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Syzygium aromaticum (clove)
A slender, evergreen tree, up to 20 m tall, conical when young, later becoming cylindrical, in cultivation usually smaller and branched from the...
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Tamarix chinensis (five-stamen tamarisk)
This species is fast growing and adapted to extreme environments, with high seed dispersal and vegetative reproduction capacity. Through depletion...
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Tamarix gallica (French tamarisk)
Most morphological features are similar to those of T. ramosissima but T. gallica differs from that species and from T. chinensis in the insertion...
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Tamarix parviflora (small-flower tamarisk)
T. parviflora shares many of the inherent physiological characters that make the weedy Tamarix spp. adapted to natural or modified riparian...
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