What are the precautions for spraying urea?
What should be noted when spraying urea? Here are the precautions for spraying urea: 1. Do not spray in extremely hot weather or before rain, to avoid burning the seedlings or losing fertilizer nutrients. The best time to spray is in the early morning or afternoon each day, and spray again 7~10 days after the first application. 2. When spraying on cereal crops or crops with smooth leaves...
What should be noted when spraying urea? Here is an introduction
Precautions for spraying urea:
1. Do not spray in extremely hot weather or before rain, to avoid burning the seedlings or losing fertilizer nutrients. The best time to spray is in the early morning or afternoon each day, and spray again 7~10 days after the first application.
2. When spraying on cereal crops or crops with smooth leaves, add 0.1% adhesive (such as laundry detergent or dish soap). Otherwise, the effect will be poor.
3. For urea used in spraying, the biuret content must not exceed 0.5%; a high content can easily damage the leaves when used as a top dressing.
4. Different crop types require different concentrations of urea solution for spraying. Generally, cereal crops require a spraying concentration of 1.5%~2%, and the concentration should be even lower when spraying during the flowering period. The spraying concentration for leafy vegetables and cucumbers is 1%~1.5%.
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