Yielding of spring wheat subjected to foliar application of urea with addition of urolysis inhibitor
1997
Czapla, J. | Humiecki, W. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Katedra Chemii Rolnej)
The effect of urolysis inhibitor (PPDA) added to urea on the yield and nitrogen content of spring wheat grain and straw, as well as its utilization from fertilizers, were studied in the course of a three-year experiment. Urea was used in the form of soil and foliar fertilization; spraying with its 8 percent solution was repeated three times in the phase from elongation to head emergence. It was found that urea applied with urolysis inhibitor had no significant influence on the yield of spring wheat grain, especilly in the years characterized by favourable weather conditions. However, the nitrogen content of grain increased, while that of straw decreased. The inhibitor did not increase the level of nitrogen utilization from urea
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