Abstract
Optimizing surface soil NPK balance through integrated nutrient management in wheat-soybean cropping system from Rawalakot Pakistan
Highlights
Maximum positive N balance was recorded for the WSR100 amended soil while the minimum was observed in case of UN100 treatment followed by PM50+WSR50
The magnitude of N losses through leaching was maximum for the WSR100 followed by the treatment where both organic amendments were combined together i.e. PM50+WSR50
The results of the present study indicated that the control soil showed negative N balance of -41.2 kg ha-1 year-1 during three years of experimentation because no nitrogen input was added to the control soil
Summary
Data on surface NPK balance showed a net depletion of 41.2 kg N ha-1year-1 and gain of 95.8 and 16.5 kg ha-1year-1 of phosphorus (P) and potassium (K) for the control soil during three years. UN alone or combination of both organic amendments + UN yielded positive surface N and P balance that varied between 40.7-86.8 and 84.5-213.7 kg ha-1year-1, respectively under different amendments. Treatments receiving repeated applications of poultry manure alone or with UN has the potential to improve the surface N and P balances. It is recommended to increase annual addition of K fertilizer (beyond 50 kg K2O ha-1year-1) with organicinorganic amendments to maintain K balance and sustain long-term soybean-wheat productivity of degraded soils of Himalayan Hindukush of Azad Jammu and Kashmir. The area is characterized by a temperate sub-humid climate with annual average rainfall ranging from about
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
