CDFA Pest Prevention Plant Regulation Practice Exam

Which of the following plants is classified as a primary noxious weed in the Ag Code?

1. Halogeton

2. Johnson grass

3. Blueweed

4. Morning Glory

The correct answer is: Blueweed

Blueweed is classified as a primary noxious weed in the Agricultural Code due to its invasive nature and significant negative impact on agricultural ecosystems. Noxious weeds are typically defined as plants that grow where they are not wanted and that cause harm to crops, livestock, or natural resources. Blueweed is particularly problematic because it can outcompete native vegetation and cultivated crops, leading to reduced crop yields and increased control costs for farmers. This classification helps inform regulations and management practices designed to control its spread and mitigate its impact on agriculture. While Halogeton, Johnson grass, and Morning Glory also have invasive characteristics, they may fall into different classifications or not be recognized within the same regulatory framework as a primary noxious weed, making them less prioritized in weed management under the Ag Code. Understanding these classifications is crucial for effective pest management and maintaining healthy agricultural practices.