التفاصيل البيبلوغرافية
| العنوان: |
Rejected Sago Starch as a Coating Material to Mitigate Urea-Nitrogen Emission |
| المؤلفون: |
Rajan Kavitha, Omar Latifah, Osumanu Haruna Ahmed, Walter Charles Primus, Kasim Susilawati |
| المصدر: |
Agronomy, Vol 12, Iss 4, p 941 (2022) |
| بيانات النشر: |
MDPI AG, 2022. |
| سنة النشر: |
2022 |
| المجموعة: |
LCC:Agriculture |
| مصطلحات موضوعية: |
ammonium, coated urea, nitrogen retention, sago starch, volatilization, Agriculture |
| الوصف: |
Urea–nitrogen is commonly lost through ammonia (NH3) volatilization, denitrification, and nitrate (NO3−) leaching. Rejected sago starch (RSS), which is a by-product of sago flour extraction, could be used to minimize NH3 volatilization from urea. Urea granules were coated with different concentrations of RSS (2%, 3%, 4%, 5%, and 6%), and their effects on NH3 emission, soil pH, exchangeable ammonium (NH4+), and available NO3− were determined. The urea was coated with RSS and homogenized using a mini rotary machine. The RSS-coated urea granules were dyed to differentiate their concentrations. The effectiveness of the RSS as a coating material was determined using a closed-dynamic air flow system. The soil used in the NH3 volatilization was the Bekenu series (Sandy loam, Typic Paleudults). This study compared seven different mixture treatments: soil alone (S), 5 g of uncoated urea (U), 5 g of 2% RSS-coated urea (CU1), 5 g of 3% RSS-coated urea (CU2), 5 g of 4% RSS-coated urea (CU3), 5 g of 5% RSS-coated urea (CU4), and 5 g of 6% RSS-coated urea (CU5). Urea coated with RSS, particularly CU1, effectively minimized NH3 loss and improved the retention of soil exchangeable NH4+ and available NO3− compared with uncoated urea because the RSS serves as a barrier to minimizing the concentration of NH3 from urea hydrolysis. Urea could be coated with RSS at the 2% concentration to enhance urea–N efficiency through a reduction in NH3 emission from urea. RSS-coated urea could be an alternative for farmers because of its controlled release of N and economical benefits. Field planting using rice as a test crop to solidify the effectiveness of RSS-coated urea in improving N retention from urea is still ongoing. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2073-4395 |
| Relation: |
https://www.mdpi.com/2073-4395/12/4/941; https://doaj.org/toc/2073-4395 |
| DOI: |
10.3390/agronomy12040941 |
| URL الوصول: |
https://doaj.org/article/7e71108996784539832a8b28a28c49cc |
| رقم الانضمام: |
edsdoj.7e71108996784539832a8b28a28c49cc |
| قاعدة البيانات: |
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