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Crop Protection Compendium

The world’s most comprehensive site for information on crop pests

Changes to Compendia distribution data: the distribution tables, maps and references in datasheets have been restructured to handle the data better for updating and align with a geographic standard. Further details are available on the About page.

PRA Tool for plant commodity and pest-initiated Pest Risk Analysis. Available as an addition to the CPC.

Horizon Scanning Tool for prioritizing invasive species threats.

Latest content

Cover for Amaranthus palmeri (Palmer amaranth)

The following description is from Flora of North America Editorial Committee (2019) and World Flora Online (2019):Dioecious plants, glabrous or...

Cover for Opuntia stricta (erect prickly pear)

Opuntia stricta is a cactus species native to the Americas that has been introduced worldwide as a popular ornamental. This species escaped from...


The following description is based on PIER (2017) and India Biodiversity Portal (2017).Dense, multi-branched evergreen shrub, commonly 1.2-2 m in...


A perennial shrub, usually cultivated as an annual subshrub, 1-1.5 (-3) m high. Tap root robust, often with four rows of lateral roots. Main stem...


This description is from Dassanayake (1995).Moderately-sized tree; bark thin, grey or pale brown; live bark 3 mm thick, pale brown, very slimy....


The following description is adapted from Flora of China Editorial Committee (2015):Cheilocostus speciosus is a perennial, robust herb. Stems 1-3 m,...


The following description is based on Jeffrey (1967) and Jeffrey (1978). Stems prostrate or scandent, to 2·7 m, finely, rather sparsely...


Echinochloa crus-pavonis is a clump forming grass native to the Americas that is now found in Africa, Asia, Oceania and Europe. It is likely its...

Cover for Pantoea stewartii (bacterial wilt of maize)

Economic losses in maize due to P. stewartii subsp. stewartii have been inconsequential in North America for the past 50 years except for a few,...

Cover for Verticillium dahliae (verticillium wilt)

IntroductionV. dahliae affects many important crops worldwide and causes economically significant losses in many countries (Pegg and Brady, 2002;...

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