TY - JOUR
T1 - Fertilizers Containing Balanced Proportions of NH4+-N and NO3−-N Enhance Maize (Zea mays L.) Yield Due to Improved Nitrogen Recovery Efficiency
AU - Masood, Sajid
AU - Suleman, Muhammad
AU - Hussain, Sajid
AU - Jamil, Muhammad
AU - Ashraf, Muhammad
AU - Siddiqui, Manzer H.
AU - Nazar, Rizwan
AU - Khan, Naseerullah
AU - Jehan, Sarvet
AU - Khan, Khalid Saifullah
AU - Tahir, Muhammad
N1 - Publisher Copyright:
© 2023 by the authors.
PY - 2023/8
Y1 - 2023/8
N2 - The current study aimed to improve the nitrogen recovery efficiency (NRE) of maize under the application of balanced proportions of ammoniacal-nitrogen (NH4+-N) and nitrate-nitrogen (NO3−-N) (1:1), as well as to determine economic impacts of such fertilizers on maize productivity. A 3-year field study was carried out in Sahiwal, Punjab, Pakistan during the 2018–2020 growing seasons with autumn maize. In parallel, multi-location field experiments were conducted at farmer’s fields in Sahiwal during the same growing seasons with autumn maize. The trials compared the effects of different fertilizers like urea, calcium ammonium nitrate (CAN), Sarsabz nitrophos (NP), nitrphos plus (NP Plus), and di-ammonium phosphate (DAP) on maize growth and yield, as well their economic efficiency. The results revealed that the application of Sarsabz NP and CAN increased the maize grain yield by 30%, 13%, 15%, 19%, 15%, and 9% as compared to the control, NP + urea, NP Plus + CAN, NP Plus + urea, DAP + urea, and DAP + CAN, respectively. In addition, the combined application of NP and CAN increased the total N and NO3−-N concentrations, whereas it decreased the NH4+-N concentrations in the soils. By contrast, NP + CAN increased the NH4+-N concentrations in maize leaves as compared to NO3−-N concentrations. Overall, the NRE of maize plants and the net return were higher under combined application of NP and CAN. In conclusion, CAN fertilizer increased the soil NO3−-N concentrations, which thus assimilated in the plants as NH4+ and improved the NRE of maize. Improved NRE thus enhanced maize yield and resulted in the maximum net return as compared to all other fertilizer combinations.
AB - The current study aimed to improve the nitrogen recovery efficiency (NRE) of maize under the application of balanced proportions of ammoniacal-nitrogen (NH4+-N) and nitrate-nitrogen (NO3−-N) (1:1), as well as to determine economic impacts of such fertilizers on maize productivity. A 3-year field study was carried out in Sahiwal, Punjab, Pakistan during the 2018–2020 growing seasons with autumn maize. In parallel, multi-location field experiments were conducted at farmer’s fields in Sahiwal during the same growing seasons with autumn maize. The trials compared the effects of different fertilizers like urea, calcium ammonium nitrate (CAN), Sarsabz nitrophos (NP), nitrphos plus (NP Plus), and di-ammonium phosphate (DAP) on maize growth and yield, as well their economic efficiency. The results revealed that the application of Sarsabz NP and CAN increased the maize grain yield by 30%, 13%, 15%, 19%, 15%, and 9% as compared to the control, NP + urea, NP Plus + CAN, NP Plus + urea, DAP + urea, and DAP + CAN, respectively. In addition, the combined application of NP and CAN increased the total N and NO3−-N concentrations, whereas it decreased the NH4+-N concentrations in the soils. By contrast, NP + CAN increased the NH4+-N concentrations in maize leaves as compared to NO3−-N concentrations. Overall, the NRE of maize plants and the net return were higher under combined application of NP and CAN. In conclusion, CAN fertilizer increased the soil NO3−-N concentrations, which thus assimilated in the plants as NH4+ and improved the NRE of maize. Improved NRE thus enhanced maize yield and resulted in the maximum net return as compared to all other fertilizer combinations.
KW - NH-N
KW - NO-N
KW - economic efficiency
KW - fertilizers
KW - maize grain yield
KW - nitrogen uptake
KW - return on investment (ROI)
UR - http://www.scopus.com/inward/record.url?scp=85169090233&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85169090233&partnerID=8YFLogxK
U2 - 10.3390/su151612547
DO - 10.3390/su151612547
M3 - Article
AN - SCOPUS:85169090233
SN - 2071-1050
VL - 15
JO - Sustainability (Switzerland)
JF - Sustainability (Switzerland)
IS - 16
M1 - 12547
ER -
