دورية أكاديمية
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Nitrogen utilization and environmental losses in organic greenhouse lettuce amended with two distinct biochars.

التفاصيل البيبلوغرافية
العنوان: Nitrogen utilization and environmental losses in organic greenhouse lettuce amended with two distinct biochars.
المؤلفون: Pereira EIP; Department of Environmental Systems Sciences, Institute of Agricultural Sciences, Swiss Federal Institute of Technology, ETH-Zurich, Zurich, Switzerland. Electronic address: engil.pereira@usys.ethz.ch., Conz RF; Department of Environmental Systems Sciences, Institute of Agricultural Sciences, Swiss Federal Institute of Technology, ETH-Zurich, Zurich, Switzerland., Six J; Department of Environmental Systems Sciences, Institute of Agricultural Sciences, Swiss Federal Institute of Technology, ETH-Zurich, Zurich, Switzerland.
المصدر: The Science of the total environment [Sci Total Environ] 2017 Nov 15; Vol. 598, pp. 1169-1176. Date of Electronic Publication: 2017 May 10.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0330500 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1026 (Electronic) Linking ISSN: 00489697 NLM ISO Abbreviation: Sci Total Environ Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Amsterdam, Elsevier.
مستخلص: The potential of biochar to prevent nitrogen (N) losses and improve plant performance were studied across various levels of N input for two growing seasons in mesocosms simulating an organic lettuce production system. A silt loam soil was amended with pine chip (PC) and walnut shell (WS) biochar (10tha -1 ) in combination with five organic N fertilization rates (0, 56, 112, 168, and 225kgNha -1 ). The N output through harvest, leachate, and N 2 O emissions were measured to assess N utilization and environmental losses of biochar-amended soils. For both biochars, only at the 100% N fertilization rate was lettuce biomass production improved with significant increases in N use efficiency (NUE); however, only PC biochar decreased N losses via leaching (at 100% N fertilization rate) and seasonal N 2 O emissions (at 50% N fertilization rate). Thus, due to increases in plant biomass and decreases in N losses, PC biochar significantly decreased the ratio of N lost over N exported in biomass. Findings from this study suggest that both WS and PC biochars can improve organic lettuce production but only at 225kgNha -1 . Decreases in N losses via leachate and N 2 O emissions vary with fertilization level and biochar type.
(Copyright © 2017 Elsevier B.V. All rights reserved.)
فهرسة مساهمة: Keywords: Amendments; Leachate; Nitrogen use efficiency, nitrous oxide; Organic farming; Vegetable crops
تواريخ الأحداث: Date Created: 20170517 Date Completed: 20180315 Latest Revision: 20180315
رمز التحديث: 20240628
DOI: 10.1016/j.scitotenv.2017.04.062
PMID: 28505879
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1026
DOI:10.1016/j.scitotenv.2017.04.062