Arid
DOI10.1080/00103624.2018.1485931
Nitrogen mineralization indicators under semi-arid and semi-humid conditions: influence on wheat yield and nitrogen uptake
Martinez, Juan M.1; Galantini, Juan A.2; Duval, Matias E.3; Rosa Landriscini, Maria1; Garcia, Ramiro J.3; Lopez, Fernando3
通讯作者Martinez, Juan M.
来源期刊COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
ISSN0010-3624
EISSN1532-2416
出版年2018
卷号49期号:15页码:1907-1921
英文摘要

The objectives were i) to assess indicators for potential nitrogen (N) mineralization and ii) to analyze their relationships for predicting winter wheat (Triticum aestivum L.) growth parameters (yield and N uptake, N-up) in Mollisols of the semi-arid and semi-humid region of the Argentine Pampas. Thirty-six farmer fields were sampled at 0-20 cm. Several N mineralization indicators, wheat grain yield and N-up at physiological maturity stage were assessed. A principal component (PC) analysis was performed using correlated factors to grain yield and N-up. The cluster analysis showed two main groups: high fertility and low fertility soils. In high fertility soils, combining PCs in multiple regression models enhanced the wheat yield and N-up prediction significantly with a high R-2 (adj R-2=0.71-0.83). The main factors that explained the wheat parameters were associated with water availability and N mineralization indicator, but they differ according to soil fertility.Abbreviations: N: nitrogen; SOM: soil organic matter; POM: particulate organic matter; SOC: soil organic carbon; SON: soil organic nitrogen; POM-C: particulate organic carbon; POM-N: particulate organic nitrogen; N-an: anaerobic nitrogen; N-hyd: hydrolyzable N; NO3-N: cold nitrate; N-205: N determined by spectrometer at 205 nm; N-260: N determined by spectrometer at 260 nm; Pe: extractable P; N-up: wheat N uptake; NO3-N: inorganic N in the form of nitrate; FR: fallow rainfalls (March-Seeding rainfall); FLR: flowering rainfalls (October-December rainfall); GFR: grain filling rainfall (November rainfall); CCR: crop growing season rainfall (June-December rainfall); PCA: principal component analysis; PC: principal component; MR: multiple regression


英文关键词Mollisols potential N mineralization principal component analysis winter crop
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000442620700010
WOS关键词SOIL ORGANIC NITROGEN ; AVAILABILITY INDEXES ; CHEMICAL INDEXES ; SUPPLYING-POWER ; MATTER ; CORN ; ARGENTINA ; PLANT ; FRACTIONS ; PAMPA
WOS类目Agronomy ; Plant Sciences ; Chemistry, Analytical ; Soil Science
WOS研究方向Agriculture ; Plant Sciences ; Chemistry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208457
作者单位1.Univ Nacl Sur, CONICET, Ctr Recursos Nat Renovables Reg Semiarida, Bahia Blanca, Buenos Aires, Argentina;
2.CIC, La Plata, Buenos Aires, Argentina;
3.UNS, Dept Agron, Bahia Blanca, Buenos Aires, Argentina
推荐引用方式
GB/T 7714
Martinez, Juan M.,Galantini, Juan A.,Duval, Matias E.,et al. Nitrogen mineralization indicators under semi-arid and semi-humid conditions: influence on wheat yield and nitrogen uptake[J],2018,49(15):1907-1921.
APA Martinez, Juan M.,Galantini, Juan A.,Duval, Matias E.,Rosa Landriscini, Maria,Garcia, Ramiro J.,&Lopez, Fernando.(2018).Nitrogen mineralization indicators under semi-arid and semi-humid conditions: influence on wheat yield and nitrogen uptake.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,49(15),1907-1921.
MLA Martinez, Juan M.,et al."Nitrogen mineralization indicators under semi-arid and semi-humid conditions: influence on wheat yield and nitrogen uptake".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 49.15(2018):1907-1921.
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