RT Journal T1 DEVELOPING A NOVEL COATED UREA WITH BIODEGRADABLE POLYMER AND UREASE INHIBITORS TO ENHANCE THE YIELD OF RICE GROWN UNDER AN USTIC TORRIFLUENT A1 S. K. Babar A1 Z. H. Shah A1 I. Rajpar A1 M. K. Yusop A1 S. Taban JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 32 IS 6 SP 1628 OP 1636 YR 2022 FD 2022/11/20 DO DOI https://doi.org/10.36899/JAPS.2022.6.0572 AB

The study deals with evaluating the viability of using biodegradable polymer palm stearin (PS) as a coating material for the provision of nitrogen (N), copper (Cu), and zinc (Zn) on slow-release mechanism. Nitrogen in conventional form results mainly in ammonia volatilization loss. Decelerating hydrolysis rate of urea with the help of certain inhibitors (Cu and Zn); can enhance N-uptake and accordingly increases rice production. A novel PS coated urea was developed manually in laboratory conditions. The effect of PS coated urea evaluated for N, Cu and Zn concentration under field conditions on rice yield and nutrients concentration (N-Cu-Zn). The experiment made use of 140 kg N ha-1 coated with 10 and 15 kg Zn ha-1 and 3 and 5 kg Cu ha-1 applied separately or in combinations. Our results indicated that the applied polymer coated urea with 15 kg Zn ha-1 and 3 kg Cu ha-1 had affirmative response to increase the yield more than half as compared to control and one-fold increase in Zn and N contents in soil and plants (p ≤ 0.05). This study has prospective to apply Zn and Cu coated urea as environment friendly fertilizer to reduce the N-losses and increase Zn contents.

K1 ammonia volatilization; slow-release urea; synchronizing nutrients; alkaline soils PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=AG-21-0102