Growing over Wang rapeseed management measures

This year's autumn and winter temperatures have been significantly higher than usual, leading to vigorous growth of rapeseed seedlings. Many fields still show a strong growth status similar to the "Tian Ersheng" phase even after entering the wintering period. Along riverbanks, it's common to see 15 or more green leaves on rapeseed plants. Currently, the crop has entered the wintering stage, yet the plants remain lush and their growth rate hasn’t slowed down. For instance, during an inspection on January 3rd, De Zao No. 11 showed an average of 15.4 green leaves per plant. Over 90% of the leaves had already bolted, with a stem height of 13.2 cm, a stem thickness of 2.46 cm, and an opening width of 95.2 cm. The overgrowth is quite evident. These types of seedlings are prone to early flowering and premature senescence. Additionally, they are highly susceptible to damage when sudden cold spells occur during winter. To manage these overgrown rapeseed fields effectively, several measures should be taken: 1. Early removal of excess foliage and timely fertilization. For fields where early moss removal has already occurred, it’s crucial to remove the main moss promptly to reduce unnecessary nutrient consumption and encourage the development of primary and secondary branches, which can help compensate for potential yield losses. It’s best to perform this task on sunny days, avoiding periods of cold weather to prevent wound rot and bacterial infections. After removing the moss, apply 5–10 kg of urea and 10 kg of compound fertilizer per acre. The removed canola foliage can be used as animal feed or compost. 2. Loosening the soil and slightly damaging the roots. For crops showing signs of early bolting, loosening the soil and damaging part of the root system can help delay early flowering. This process can slow down the plant's growth and help maintain better growth balance. In areas with poor soil fertility, long-lasting pods, or tall varieties, additional fertilization may also be beneficial. 3. Applying plant growth inhibitors. If the base fertilizer contains high levels of nitrogen and the seedlings are excessively vigorous, chemical control using plant growth regulators is recommended. A typical application would be 15% paclobutrazol mixed with 50 kg of water and sprayed onto the foliage. In addition to these measures, proper field management such as drainage, planting ash to improve soil quality, and frost prevention should not be overlooked. Taking these steps now can help ensure healthier growth and better yields in the coming season.

Han Yuan Red Peppercorns

Han Yuan red peppercorns

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