Bestryding van plantsiektes

Abstract

Control of plant disease through preventive measures is based upon exclusion, eradication and direct protection. The government tries to prevent importation of new diseases and aids in the eradication of newly introduced diseases. Farmers are capable of controlling plant diseases to a great extent by using scientific crop rotation systems, sanitary measures, suitable cultural practices, certified seed and disease-free plants. Fungicidal costs can be minimized if use is being made of disease forecasting. Plant pathologists cooperating with plant breeders and vice versa, can supply farmers with disease resistant material. Better varieties and hybrids aid in reducing the cost of production. We are entering a new era in which plant disease therapeutants might be used extensively. Scientists are seeking for systemic fungicides which might be capable of immunizing plants against infection or which might heal diseased plants. The important role played by cultural practices in disease control, in order to eliminate or to supplement chemical control methods, has been emphasised. The conclusion drawn is that the ability of plants to remain healthy right through a life cycle is more amazing than their ability to contract disease.