Causal organismss of diseases in crop production do not include

The causal organisms of diseases in crop production do not include protozoa. Protozoa are single-celled microorganisms that are usually found in water and soil. Although they can cause diseases in animals and humans, they are not known to be significant pathogens in crop production. In contrast, viruses, bacteria, and fungi are all known to cause diseases in crops. Viruses are extremely small infectious agents that can only replicate inside living cells. They can cause a wide range of diseases in crops, including mosaic and yellowing diseases. Bacteria are also microscopic organisms that can cause diseases in crops, such as blight and wilt diseases. Fungi are multicellular organisms that can cause diseases in crops such as rust, smut, and powdery mildew. Therefore, the causal organisms of diseases in crop production do not include protozoa, while viruses, bacteria, and fungi are all significant pathogens in crop production.