High-energy red potassium has special effects in controlling cotton stem blight

From mid-August to September, the upper leaves of cotton main stems turned from pale yellow to dark green. Yellow spots appear in the green veins, then brown, and then the leaves shrink, brittle, reddish brown and fall off, this phenomenon is red leaf stem blight (is a physiological disease caused by plant potassium deficiency), seriously affecting yield . Practice has proved that high-energy red potassium has special effects in controlling cotton stem leaf blight. The specific method is as follows:
1. Deeply turn 25-30 cm before sowing. If there is no deep-turning condition, the soil conditioner can be sprayed with a sprayer per acre before planting--"free deep-plowing" 200g, so that 30-50cm deep layer of soil is loose and transparent, promoting root development to deeper layers and enhancing absorption capacity. .
2. Apply 30 kg of potassium sulfate-type compound fertilizer per acre before sowing.
3. After the seedlings are released, they are removed early in the end of May, prompting the roots to develop deeper. 4. In June and August, spray “high-energy red potassium” every 20 days to supplement potassium fertilizer. Together with a package of "Shuo 481", it promotes photosynthesis of leaves and enhances the absorption capacity of roots.
Shandong Academy of Agricultural Sciences Song Yuanlin

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