دورية أكاديمية
Nitrogen fertilization impact on soil carbon pools and their stratification and lability in subtropical wheat-mungbean-rice agroecosystems.
العنوان: | Nitrogen fertilization impact on soil carbon pools and their stratification and lability in subtropical wheat-mungbean-rice agroecosystems. |
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المؤلفون: | Rafeza Begum, Mohammad Mofizur Rahman Jahangir, M Jahiruddin, Md Rafiqul Islam, Md Taiabur Rahman, Md Lutfar Rahman, Md Younus Ali, Md Baktear Hossain, Khandakar Rafiq Islam |
المصدر: | PLoS ONE, Vol 16, Iss 10, p e0256397 (2021) |
بيانات النشر: | Public Library of Science (PLoS), 2021. |
سنة النشر: | 2021 |
المجموعة: | LCC:Medicine LCC:Science |
مصطلحات موضوعية: | Medicine, Science |
الوصف: | Nitrogen (N) is the prime nutrient for crop production and carbon-based functions associated with soil quality. The objective of our study (2012 to 2019) was to evaluate the impact of variable rates of N fertilization on soil organic carbon (C) pools and their stocks, stratification, and lability in subtropical wheat (Triticum aestivum)-mungbean (Vigna radiata)-rice (Oryza sativa L) agroecosystems. The field experiment was conducted in a randomized complete block design (RCB) with N fertilization at 60, 80, 100, 120, and 140% of the recommended rates of wheat (100 kg/ha), mungbean (20 kg/ha), and rice (80 kg/ha), respectively. Composite soils were collected at 0-15 and 15-30 cm depths from each replicated plot and analyzed for microbial biomass (MBC), basal respiration (BR), total organic C (TOC), particulate organic C (POC), permanganate oxidizable C (POXC), carbon lability indices, and stratification. N fertilization (120 and 140%) significantly increased the POC at both depths; however, the effect was more pronounced in the surface layer. Moreover, N fertilization (at 120% and 140%) significantly increased the TOC and labile C pools when compared to the control (100%) and the lower rates (60 and 80%). N fertilization significantly increased MBC, C pool (CPI), lability (CLI), and management indices (CMI), indicating improved and efficient soil biological activities in such systems. The MBC and POC stocks were significantly higher with higher rates of N fertilization (120% and 140%) than the control. Likewise, higher rates of N fertilization significantly increased the stocks of labile C pools. Equally, the stratification values for POC, MBC, and POXC show evidence of improved soil quality because of optimum N fertilization (120-140%) to maintain and/or improve soil quality under rice-based systems in subtropical climates. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1932-6203 |
Relation: | https://doaj.org/toc/1932-6203 |
DOI: | 10.1371/journal.pone.0256397 |
URL الوصول: | https://doaj.org/article/8e1f4f27ce6043b097aaebff203940d0 |
رقم الأكسشن: | edsdoj.8e1f4f27ce6043b097aaebff203940d0 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 19326203 |
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DOI: | 10.1371/journal.pone.0256397 |