What are the precautions to be observed for spraying urea?
• Size of sprayer’s nozzle is important. The increase in concentration depends on the nozzle type. The sprays should be fine as mist but not as droplets of water. • Bigger droplets fall off from the leaf surfaces and are wasted. Also, leaves may be scorched if the droplets are retained on the leaves. • Sprayings are best done after 0400 hours in the evening. • While spraying the nozzle should be kept at least 1 to 2 feet away from the vegetative growth. • The weather should not be cloudy. • The concentration of urea should not exceed 3% in case of knapsack sprayers and 20% in case of power prayers (low volume high pressure sprayers). • It is advisable to mix 1% of sugar or jaggery with the urea solution for better absorption.
