Explore essential knowledge on managing major fungal diseases in cumin crops, from recognition to prevention strategies and treatments. Sharpen your skills in identifying symptoms and implementing effective control measures.
Which of the following is a primary visible symptom of Fusarium wilt in cumin plants?
Explanation: Yellowing and wilting of foliage are characteristic symptoms of Fusarium wilt in cumin. Black rust pustules are associated with rust diseases, white powder is typical of powdery mildew, and purple leaf spots are usually seen in Alternaria blight, not Fusarium wilt.
What is the most effective cultural practice to minimize powdery mildew in cumin crops?
Explanation: Proper plant spacing helps reduce humidity and improves airflow, lowering powdery mildew risk. Excess nitrogen can promote lush susceptible growth, irrigating at night increases leaf wetness, and shaded cultivation favors disease development.
Which fungicide is commonly recommended for the control of Alternaria blight in cumin fields?
Explanation: Mancozeb is a fungicide effective against Alternaria blight. Glyphosate is an herbicide, imidacloprid is an insecticide, and chlorpyrifos is also an insecticide, none of which manage fungal diseases.
Why is crop rotation with non-host crops important for cumin disease management?
Explanation: Rotating with non-hosts interrupts pathogen persistence and reduces disease risk. Changing soil acidity is not a direct benefit, weed control is a separate issue, and vitamin content is unrelated to rotation.
What is the main benefit of treating cumin seeds with a fungicide before sowing?
Explanation: Fungicidal seed treatment helps protect seedlings against diseases present on or in the seed. It does not alter flowering time, does not control insect pests, and does not affect seed size.