The results of foliar nutrition of field crops. I. Response of plants to foliar nitrogen application
Roczniki Gleboznawcze 45(3/4): 69-78
Preliminary trials of the effects of foliar application of 10-40% urea solutions on cereals are reported. In field trials with winter and spring barley, winter triticale, winter wheat and rye in 1990-91, various combinations of foliar applications of urea solution and top dressing with equivalent rates of solid urea were tested. Foliar application gave higher yields and greater N use efficiency than solid urea. The best urea concentration ranged from 20% at tillering to 5% during ripening.