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Response measures take different measures for different reasons. First, increase the application of boron fertilizer sandy loam. Applying 1 kg of boron fertilizer per acre can be used as a basal fertilizer, and it can also be sprayed with 0.2%~0.3% boric acid solution 1~2 times during the middle period of radish. Second, deep sorghum cultivation, diligent tillage weeding, apply more organic fertilizer to prevent soil compaction. Third, avoid continuous cropping with cruciferous vegetables. 4. Disinfect the soil before sowing, and use 72% of agricultural streptomycin 4000 times or 14% of complex ammonia hydrogen peroxide 300 times at the seedling stage, spray once every 3 to 7 days, and spray 3 to 4 times.
Why radish "black heart"
One of the reasons is the lack of boron in sandy loam, the second is the waterlogging or lack of oxygen in the soil, and the third is the occurrence of black rot.
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