Methods to Prevent Wheat Lodging in Spring
Lodging is one of the main obstacles affecting wheat yield under high fertilizer and water conditions. In recent years, the widespread application of plant growth regulators in wheat production has opened up a new avenue for preventing lodging and promoting increased yield, and is an important supporting technical measure for high and stable wheat yields.
1. Spraying Paclobutrazol:
During the wheat tillering stage, spraying 30 kg of 200 ppm Paclobutrazol solution per acre can dwarf the plants, enhance lodging resistance, and also control wheat powdery mildew and improve the plant's nitrogen absorption and utilization rate.
2. Applying Uniconazole (commercially available as a 5% wettable powder):
This is a new type of highly effective plant growth regulator with 6-10 times higher biological activity than Paclobutrazol. Application to wheat can prevent lodging under high-density, high-fertility and water conditions, and also reduces sterile spikelets and increases thousand-grain weight. Experiments have shown that, under windless and lodging-free conditions, wheat treated with Uniconazole yielded an average of 15.4% more than the control. Application methods: 1. Spray 50 kg of 30-40 ppm Uniconazole solution per mu (approximately 0.067 hectares) within one week before wheat jointing.
3. Spraying Chlormequat Chloride:
For wheat fields with large plant populations and vigorous growth, spraying 50-75 kg of 0.15-0.3% Chlormequat Chloride solution per mu at the early jointing stage can effectively inhibit internode elongation, dwarf the plants, and strengthen the stem base, thus preventing lodging. If mixed with 2,4-D butyl ester, it can also control broadleaf weeds in wheat fields.
4. Spraying Growth Promoter:
During the wheat jointing stage, apply 15-20 ml of growth promoter per mu (approximately 0.067 hectares) diluted in 50-60 kg of water as a foliar spray. This can inhibit internode elongation, prevent lodging in later stages, and increase yield by 10-20%.
1. Spraying Paclobutrazol:
During the wheat tillering stage, spraying 30 kg of 200 ppm Paclobutrazol solution per acre can dwarf the plants, enhance lodging resistance, and also control wheat powdery mildew and improve the plant's nitrogen absorption and utilization rate.
2. Applying Uniconazole (commercially available as a 5% wettable powder):
This is a new type of highly effective plant growth regulator with 6-10 times higher biological activity than Paclobutrazol. Application to wheat can prevent lodging under high-density, high-fertility and water conditions, and also reduces sterile spikelets and increases thousand-grain weight. Experiments have shown that, under windless and lodging-free conditions, wheat treated with Uniconazole yielded an average of 15.4% more than the control. Application methods: 1. Spray 50 kg of 30-40 ppm Uniconazole solution per mu (approximately 0.067 hectares) within one week before wheat jointing.
3. Spraying Chlormequat Chloride:
For wheat fields with large plant populations and vigorous growth, spraying 50-75 kg of 0.15-0.3% Chlormequat Chloride solution per mu at the early jointing stage can effectively inhibit internode elongation, dwarf the plants, and strengthen the stem base, thus preventing lodging. If mixed with 2,4-D butyl ester, it can also control broadleaf weeds in wheat fields.
4. Spraying Growth Promoter:
During the wheat jointing stage, apply 15-20 ml of growth promoter per mu (approximately 0.067 hectares) diluted in 50-60 kg of water as a foliar spray. This can inhibit internode elongation, prevent lodging in later stages, and increase yield by 10-20%.
