Is IFFCO nano urea liquid as good as a urea bag?

Nano urea liquid is a foliar nitrogen product; IFFCO states a 500 ml bottle (40,000 mg/L nitrogen) is meant to substitute the nitrogen impact of one conventional urea bag, with much higher use efficiency (over 80% versus 30 to 40% for prilled urea) because leaves absorb it directly. It is the only nano fertiliser approved under the Fertilizer Control Order. Use it as a foliar spray of about 2 to 4 ml per litre of water at active tillering/branching and again before flowering, sprayed in cool hours on both leaf sides. It works best as a top dressing supplement; a basal source of nitrogen plus phosphorus is still recommended. Independent field results vary by crop, so trial it on part of your field first.