In addition to these parasitic organisms, non-living factors such as deficien cies or excesses of water, light, temperature, air pollution, pesticides, and nutrients can either predispose a plant to disease or directly cause plant injury. Fortunately, many disease problems can be prevented or controlled without the use of pesticides.
(2) Effective plant disease control must begin at the onset of disease or even before symptoms appear.
Several non-chemical practices that can reduce plant loss are as follows. First is resistance. Effective plant disease control. through resistance (or a plant's tolerance and immunity to disease) is based on the knowledge of diseases known to occur in an area. Selection of resistant plants may elimi nate many disease problems.
(3) Exclusion, another non-chemical practice, is pre venting the entrance and establishment of disease caus ing organisms (pathogens) into areas where plants are grown.
This means avoid bringing diseases into and/or moving them around the garden. Use certified, disease free seeds or transplants.
Examine the leaves and root systems of transplants and eliminate or destroy diseased plants. Either raise your own transplants in sterilized beds or buy them from a reputable dealer. Also, avoid trans porting soil or tools from known disease areas to disease free areas.
(4) Last but not least is eradication. Eradication is the elimination of the disease-causing organism after it has become established on a plant. Eradication can be ac complished by sanitation, crop rotation, fallowing, and soil sanitation treatments.
Baca Juga: Contoh Soal UTBK Bahasa Inggris, Tipe Pernyataan Tak Disebutkan atau Unstated Questions
Pertanyaan
1. What is the best summary for the passage?
A. Living pathogenic organisms and non-living factors are the most prevalent causes that harm plants. That is why chemical practices are deemed essential to effectively solve the problems.
B. Effective plant disease control is required to pre vent more damage to the environment. Studies about specific plant diseases have been conduct ed with promising results.
Penulis | : | Jestica Anna |
Editor | : | Aisha Amira |
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