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Ilan Chet, Ada Viterbo and Yariv Brotman Department of Biological Chemistry Tel.+972 8 934 4466 Fax.+972 8 934 4112 E-mail: ilan.chet@weizmann.ac.il 1 – Trichoderma-Induced systemic resistance in plants Biological control, the use of specific microorganisms that interfere with plant pathogens and pests, is a nature-friendly, ecological approach to overcome the problems caused by standard chemical methods of plant protection.

Plant Biocontrol by Trichoderma spp.

The rate of forest loss is accelerating. On average, about 1 million ha per year were cleared in the 1980s, rising to about 1.7 million ha per year in the first part of the 1990s. Since 1996, deforestation appears to have increased to an average of 2 million ha per year.

Indonesia’s lowland tropical forests, the richest in timber resources and biodiversity, are most at risk. They have been almost entirely cleared in Sulawesi and are predicted to disappear in Sumatra by 2005 and Kalimantan by 2010 if current trends continue.

Nearly one half of Indonesia’s forests are fragmented by roads, other access routes, and such developments as plantations.Deforestation in Indonesia is largely the result of a corrupt political and economic system that regarded natural resources, especially forests, as a source of revenue to be exploited for political ends and personal gain. Logging concessions covering more than half the country’s total forest area were awarded by former President Suharto, many of them to his relatives and political allies. Cronyism in the forestry sector left timber companies free to operate with little regard for long-term sustainability of production.

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