Causes and Spread of Crop Diseases - JSS1 Agricultural science Lesson Note

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1. Environmental Conditions: Certain diseases thrive in specific environmental conditions, such as high humidity or prolonged periods of rain.

2. Infected Plant Material: Pathogens can spread through infected seeds, planting material, or contaminated soil.

3. Vectors: Insects and other organisms can act as vectors, transmitting diseases from infected to healthy plants.

4. Cultural Practices: Poor agricultural practices, such as improper spacing, overwatering, or lack of crop rotation, can contribute to the spread of diseases.