What damage does sclerotinia rot cause to wrapped-heart mustard?
What damage does sclerotinia rot cause to wrapped-heart mustard? How do you prevent and control sclerotinia rot in wrapped-heart mustard? We'd also like netizens to help explain the damage sclerotinia rot causes to wrapped-heart mustard: sclerotinia rot mostly infects starting from the stem base and the petioles of the outer leaves. Early lesions are water-soaked, grayish brown to yellowish brown, and spread rapidly in all directions, causing the diseased area to become irregularly rotted...
What damage does sclerotinia rot cause to wrapped-heart mustard? How do you prevent and control sclerotinia rot in wrapped-heart mustard? We'd also like netizens to help explainDamage of sclerotinia rot to wrapped-heart mustard:
Sclerotinia rot mostly infects starting from the stem base and the petioles of the outer leaves. Early lesions are water-soaked, grayish brown to yellowish brown, and spread rapidly in all directions, causing the diseased area to become irregularly rotted.
As the disease develops, a dense cottony white mold forms on the surface of the diseased tissue, which later turns into black sclerotia.
Sometimes several outer leaves are infected at the same time, and the diseased plant collapses and breaks off within a short period. The stem base rots and becomes hollow, and sclerotia form in the pith at the later stage, causing the whole plant to wilt and die.
Prevention and control methods for sclerotinia rot in wrapped-heart mustard:
Select seeds with 10% salt water, remove the sclerotia, then rinse the seeds clean with clear water.
Avoid continuous cropping, apply sufficient base fertilizer, increase phosphorus and potassium fertilizer, and pay attention to drainage.
In the early stage of the disease, spray 50% procymidone or 50% iprodione diluted with water at 1000-2000 times, 50% carbendazim diluted with water at 500 times, or 40% dimethachlon diluted with water at 1000 times. When spraying, focus on spraying the base of the plant stems, the old leaves and the ground. Spray once every 5-7 days, for 3-4 consecutive sprays.
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