Part 1
Original video: https://youtu.be/oFeFoQTDaVE
Part 2
Original video: https://youtu.be/Ym4HmPM89PA
Recorded on: 30 August 2024
Shot on: DJI Mini 4 Pro
Paddy Lodging refers to the bending or toppling over of rice plants, typically during the grain-filling stage, which results in the plant's stems no longer being upright. Lodging can significantly impact rice yield and quality, as it makes harvesting difficult and reduces grain fill due to poor light interception and disrupted nutrient transport.
Lodging in rice can occur for several reasons:
1. Weak Stems: Insufficient strength in the plant’s stems or culms may cause them to bend or break under the weight of the ripening grain. This can be due to genetic factors or a lack of adequate nutrients (especially potassium and silica), which are essential for stem strengthening.
2. Excessive Nitrogen Application: Overuse of nitrogen fertilizers can encourage excessive vegetative growth, making the rice plants taller and more prone to lodging, especially under the weight of heavy grain heads.
3. Environmental Factors: Strong winds, heavy rains, or storms can cause mechanical stress, forcing the plants to bend or collapse. Flooding in lowland rice fields can also exacerbate lodging by weakening root anchorage in waterlogged soils.
4. Overly Dense Planting: High planting density can increase competition for sunlight, encouraging rapid upward growth but reducing the structural robustness of individual plants, leading to a higher risk of lodging.
Consequences of Lodging
1. Reduced Yield: Lodging reduces the plant's ability to photosynthesize effectively, leading to smaller grains and incomplete grain filling. Lodged plants may also suffer from increased grain loss during mechanical harvesting.
2. Grain Quality: Lodging can result in increased exposure to pests and diseases, as well as grain spoilage due to prolonged contact with wet soils.
3. Prevention of Lodging
Balanced Fertilization: Applying the correct balance of nitrogen, potassium, and silica helps to strengthen the stems and avoid excessive vegetative growth.
4. Improved Varieties: Planting lodging-resistant rice varieties with shorter, stronger stems can help mitigate the risk.
5. Optimized Planting Density: Proper spacing between plants can reduce competition for light and ensure sturdier growth, thereby lowering the chances of lodging.
Location:
Batu 7 1/2 Jalan Bukit Rambai 75250 Melaka
65WJ+483 Malacca
2.245300553050401, 102.18078312630341
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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