External Black-white Sunshade Net Series External Black-White Sunshade Net Series,Outdoor Sun Shading Net,Anti-Ultraviolet Sunshade Net,Energy-Saving Shading Net Changzhou Green Nets Co.,Ltd. , https://www.czglnets.com
Relief measures for lodging late in crops
Daejeon crops often experience three main types of lodging: stem falling, root lodging, and stem folding. Each type leads to different levels of yield loss. When the stems simply tilt without breaking, the plants can usually recover once weather conditions improve, resulting in relatively minor yield losses. However, if the stems are folded or broken, recovery is difficult, and rescue efforts are limited, leading to significant production losses. Root lodging, on the other hand, lifts the lateral roots, causing the plant to tilt significantly, sometimes even lying flat on the ground. This reduces sunlight exposure, limits photosynthesis, and slows down the ripening process, ultimately lowering yield. Timely support measures can help reduce the damage caused by root lodging.
In the later growth stages of maize, root lodging is common. Due to the weight of the upper part of the plant, it becomes difficult for the stalks to stand upright after a storm. Immediate action is essential—delaying the response increases yield loss. When supporting the plants, the stems should be angled slightly towards the ground. Proper angling helps the plant regain an upright position without causing additional damage, which can actually increase yields. Experiments have shown that an angle of 30 to 50 degrees is most effective. The earlier the intervention, the better, and proper soil cultivation around the roots should also be carried out at the same time.
For sorghum, when the roots fall, quick action is necessary. Stalks can be tied together, with the intersections secured near the top of the plant. This ensures each plant tilts at a certain angle without overlapping the panicles. Care should be taken not to bundle too tightly, as this may damage the lower leaves, which are crucial for photosynthesis. The sooner the support is provided, the better, and this measure should not be delayed beyond two days.
In the case of millet, root lodging in the later growth stages can lead to the stems lying flat on the ground, increasing the risk of root rot and disease spread, which further reduces yield. According to field trials, using sticks to lift the leaves off the ground instead of raising the entire plant resulted in a 25 kg per mu increase compared to lifting at a 60-degree angle the day after the storm. This method causes fewer wounds, promotes faster regrowth, and results in higher yields. For lighter lodging cases, topdressing and soil cultivation can help minimize yield loss.