In praise of plant pesticides
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CTA. 2005. In praise of plant pesticides. Spore 116. CTA, Wageningen, The Netherlands.
Permanent link to this item: http://hdl.handle.net/10568/47979
Internet URL: http://spore.cta.int/images/stories/pdf/old/spore116.pdf
A decade of research at the Lowlands Agricultural Experiment Station (LAES), the largest research station of the National Agricultural Research Institute (NARI), has led to the development and release of three plant derived pesticides (PDP).
A decade of research at the Lowlands Agricultural Experiment Station (LAES), the largest research station of the National Agricultural Research Institute (NARI), has led to the development and release of three plant derived pesticides (PDP). These environmentally friendly pesticides will be used on one of the main crop groups grown in the South Pacific brassicas, which, along with other green leafy vegetables, suffer greatly from insect pests in terms of both yield and quality. PDPs are compounds which are obtained from plants and used to control pests that damage crops. They have the attraction of being both low-cost and harmless to both crops and the environment. The PDPs recommended by NARI include one made from the roots of the derris plant, which is found locally in forests, and which can be grown easily in a village or garden. Products made from extracts of derris roots have been used as commercial pesticides for many years. Another PDP comes from the fruit of the chilli plant, which is also suitable for gardens. The third is obtained from the seeds of the neem tree, a plant with pest repellant properties which originated in India, but which grows well in a South Pacific village setting. Neem needs to be grown in areas with a dry season if it is to produce seeds. The research shows that pesticides obtained from derris, chillies and neem can all offer the same degree of pest control as commercially available insecticides. Trials at LAES have demonstrated the effectiveness of the plant derived pesticides and scientists there say this plant derived pesticide technology should help farmers to improve crop yields throughout the South Pacific region. The percentage of cabbage heads damaged by insect pests fell from 40% to around 5% when PDPs were used. The Secretariat of the Pacific Community is helping NARI to spread information about PDPs to farmers and extension providers. More details about the technology are available at NARI Information Centres. NARI Kana Aburu Haus Sir Alkan Tololo Research Station LAES PO Box 4415 Lae 411, Morobe Province Papua New Guinea Tel: +675 475 1444 Fax: +675 475 1450 E-mail: firstname.lastname@example.org Website: www.nari.org.pg