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The following information is primarily from Holm et al. (1977), Waterhouse and Norris (1987) and Parsons and Cuthbertson (1992).

Recoginition


Recommended resources for identification of S. acuta include PIER (2009), USDA-NRCS (2009), Viarouge et al. (1997), and Ivens (1968).

Related invasive species

  • Sida acuta

Related Farm Practice

  • Hosts
  • Pastures
Impact


Originating in central America, the small perennial shrub, S. acuta has successfully invaded the tropics worldwide, largely as a contaminant in pasture seed. Its tolerance of a wide range of growing conditions has enabled S. acuta to become established in these diverse habitats. It infests various crops and habitats, but has been most problematic in pastures and rangelands, particularly in savannah-type biomes with pronounced wet and dry seasons. It can form dense monospecific stands in these regions, and has had a pronounced economic impact in northern Australia, Papua New Guinea and many Pacific Islands. Since the late 1980s, the foliage-feeding chrysomelid beetle Calligrapha pantherina has been introduced into many areas as a biological control agent specific to S. acuta and related Sida species. Introductions of C. pantherina have led to successes in control of S. acuta infestations, reducing seed production, and resulting in restoration of native vegetation in many cases.

Has Cabi datasheet ID
49985
Hosts

S. acuta is a weed of plantation crops, cereals, root crops and vegetables throughout the Pacific and South-East Asia. It is a principal weed of maize in Mexico, sorghum in Australia and Thailand, tomatoes in the Philippines, onions in Brazil, and pastures in Australia, Fiji, Nigeria and Papua New Guinea. It is also a weed of tea in Taiwan and Sri Lanka, groundnuts in Ghana, cassava in Ghana and Nigeria, maize in Ghana, Nigeria and Thailand, coconuts in Trinidad, beans in Brazil, pastures under coconuts in Sri Lanka, pineapples in the Philippines, sugarcane and groundnuts in Australia, El Salvador and Trinidad, coffee in Colombia, rubber in Malaysia, upland rice in the Philippines and Nigeria, cotton in El Salvador and Thailand, and cowpeas and sweet potatoes in Nigeria (Holm et al., 1977;Chadhokar, 1978;Mott, 1980;Parsons and Cuthbertson, 1992;Ham and Eastick, 2004).

Oss tagged
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