26 ਜਨਵਰੀ ਤੋਂ ਬਾਅਦ ਕੀਤੀ ਗਈ ਕਣਕ ਵਿੱਚ ਇੱਕ ਗਲਤੀ ਝਾੜ ਘਟਾਏਗੀ Late urea bad effects in wheat crop

Описание: #wheat #crop #farming #soil #punjab


Overdosing or applying urea too late in a wheat crop leads to significant physiological, economic, and environmental drawbacks. While nitrogen is essential, "more" often translates to "less" yield and "poorer" quality.
Effects of Overdosing Urea (Excess Nitrogen)
Lodging: Excessive urea promotes lush, rapid vegetative growth with weak, thin stems. This makes the wheat crop prone to "lodging" (falling flat), which complicates harvesting and severely reduces grain yield.
Pest and Disease Susceptibility: High nitrogen levels create a humid microclimate in the foliage and produce soft tissues that act as "magnets" for pests like aphids and fungal diseases like Fusarium or Rhizoctonia.
Fertilizer Burn: High concentrations of urea can cause "osmotic stress," drawing water out of the roots and leading to brown leaf tips, scorching, or even plant death.
Soil Acidification: Over-reliance on urea releases hydrogen ions, making the soil more acidic over time. This can lock up other essential nutrients like phosphorus and magnesium.
Reduced Grain Quality: While it may increase protein content slightly, an overdose often deteriorates the overall cooking, eating, and appearance quality of the grains.
Effects of Late Urea Application
Vegetative Overgrowth at the Wrong Time: Applying urea too late (e.g., after the boot stage or anthesis) can trigger a flush of new leafy growth instead of directing energy into grain filling.
Delayed Maturity: Late nitrogen keeps the plant in a vegetative state longer, which may delay harvesting and expose the crop to heat stress during the critical grain-filling period.
Leaf Scorch: Late-season foliar applications of urea, especially in liquid form, carry a high risk of "leaf burn" or scorching if applied during hot weather or at incorrect concentrations.
Poor Grain Filling: Research indicates that excessive late nitrogen can actually inhibit the grain filling of "inferior" (later-developing) grains, leading to a lower 1000-grain weight and overall yield.
Environmental & Economic Impact
Groundwater Pollution: Excess urea that isn't absorbed by the crop leaches into the soil, leading to high nitrate concentrations in groundwater—a major health risk.
Financial Loss: Applying more fertilizer than the plant can use is a direct waste of money for the farmer, as it does not yield a proportional increase in profit.
For more precise recommendations, you can check the ICAR Fertilization Guidelines or consult a local Krishi Vigyan Kendra (KVK) expert.
What growth stage is your wheat crop currently in? Knowing this can help determine if it's still safe to apply any remaining nutrients.