Fertilizer Rate and Urease and Nitrification Inhibitors Effects on Soil Inorganic Nitrogen and Sugarcane Yields in Central Thailand
Issued Date
2023-01-01
Resource Type
ISSN
09721525
eISSN
09740740
Scopus ID
2-s2.0-85161378285
Journal Title
Sugar Tech
Rights Holder(s)
SCOPUS
Bibliographic Citation
Sugar Tech (2023)
Suggested Citation
Welutung P., Pengthamkeerati P., Tawornpruek S., Kachenchart B. Fertilizer Rate and Urease and Nitrification Inhibitors Effects on Soil Inorganic Nitrogen and Sugarcane Yields in Central Thailand. Sugar Tech (2023). doi:10.1007/s12355-023-01282-z Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/83058
Title
Fertilizer Rate and Urease and Nitrification Inhibitors Effects on Soil Inorganic Nitrogen and Sugarcane Yields in Central Thailand
Author's Affiliation
Other Contributor(s)
Abstract
Improving nitrogen fertilizer use by plants and reducing N losses through applying the appropriate nitrogen (N) fertilizer rate with urease inhibitors (UIs) and nitrification inhibitors (NIs) may enhance crop production and the efficiency of N use. Sugarcane and unplanted plots were established in Central Thailand to investigate the effects of fertilizer application based on soil analysis and UIs, NIs and their combination (UINIs) on soil inorganic N, sugarcane productivity and N uptake. Both synthetic and natural inhibitors were investigated: UIs from N-(n-butyl) thiophosphoric triamide (NBPT) and garlic (Allium sativum L.) and NIs from dimethylpyrazole phosphate (DMPP), ground neem seed (Azadirachta indica A. Juss.) and praxelis (Praxelis clematidea (Griseb.) R.M. King & H. Rob). The results indicated the potential of applying UIs, NIs and UINIs along with N fertilizer to obtain a slower decrease in soil NH4+ and improve sugar products. The results indicated enhanced sugarcane growth and an apparent increase (up to 31%) in the cane and sugar yields in all the inhibitory treatments. Notably, despite the synthetic NIs and NIs from plants having similar effects on soil inorganic N, the natural NIs tended to enhance sugarcane yields and N uptake. These findings supported the application of UIs and NIs as a potential solution to reduce N fertilizer rates and N losses from soil, while increasing crop productivity. In addition, NIs from plants might be of interest for further investigation and for promotion to farmers.