Georgia Pesticide Applicators Practice Exam

Lack of nitrogen fertilization can contribute to the development of which problem?

1. Pest Resistance

2. Leaf Spot Disease

3. Weed Growth

4. Insect Infestation

The correct answer is: Pest Resistance

Lack of nitrogen fertilization can significantly contribute to the development of pest-related problems, specifically through the weakening of plant health. Nitrogen is a vital nutrient that promotes vigorous growth and robust development in plants. When nitrogen levels are inadequate, plants may exhibit stunted growth, yellowing leaves, and overall reduced vitality. Healthy plants are typically better at resisting pest infestations, as robust foliage often contains higher levels of natural defenses and can better withstand herbivory. Conversely, when plants are nitrogen-deficient, they may become more inviting to pests due to the diminished quality of their tissues, making them less palatable or more vulnerable, leading to an increase in pest populations. On the other hand, while leaf spot diseases, weed growth, and insect infestations can be influenced by various environmental and nutrient factors, the direct link between nitrogen deficiency and increased pest issues highlights the significant role nitrogen plays in plant resilience. Therefore, the correlation between a lack of nitrogen fertilization and the increased risk of pest problems is well-established in agricultural practices.