干旱区生态环境知识资源中心(Arid): Expansion of maize production in a semi-arid region of Argentina: Climatic and edaphic constraints and their implications on crop management

Arid

DOI	10.1016/j.agwat.2019.105761
	Expansion of maize production in a semi-arid region of Argentina: Climatic and edaphic constraints and their implications on crop management
	Hernan Rotili, Diego; Giorno, Agustin; Maximiliano Tognetti, Pedro; Angel Maddonni, Gustavo
通讯作者	Rotili, DH (corresponding author), Univ Buenos Aires, Fac Agron, Dept Prod Vegetal, Catedra Cerealicultura, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	226
英文摘要	The Southwestern Pampas (SWP) is a semi-arid region of Argentina with the presence of a widespread caliche layer that limits soil depth. In this region, maize production has recently expanded with scarce information on appropriate management practices. The objective of this work was to provide an agro-climatic and eco-physiological framework of cultural changes of maize cropping systems of the SWP and the main implications of the climatic and edaphic constraints on crop management decisions. The work combined i) public data of regional maize cultivated area for the period 2008-2015 alongside with farmers' cropping management trends related to sowing dates and plant population density (PPD); ii) on-field experimental data generated from trials in different sites in the SWP sown at different dates, soil depths and PPDs; and iii) a crop water-economy characterization with a probabilistic approach by means of historical climatic series (identifying the El Nino Southern Oscillation (ENSO) phases) in three locations in the SWP across a longitudinal range between the 800 mm and 600 mm isohyets. In the 2008-2015 period, maize area increased five-fold, median sowing date delayed one month and PPD decreased from ca. 7.2 pl m(-2) to 3.4 pl m(-2). Late-sown crops (7564 kg ha(-1); CV = 19%) out-yielded earlysown crops (5888 kg ha(-1); CV = 42%) with less variability across environments. Crop evapotranspiration during the cycle (ETacycle) slightly decreased (P50 = 3-32 mm lower) with the delay of sowing, but the proportion of crop evapotranspiration during the reproductive period was significantly higher. ETacycie of late crops did not vary within PPD, but transpiration per plant decreased with PPD and increased in deep soils, especially at low densities. The impacts of sowing date and PPD did not vary among ENSO phases, not supporting the use of ENSO as a decision criterion for maize management in the SWP.
英文关键词	Sowing date Plant population density Grain yield Crop evapotranspiration Plant transpiration ENSO
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000525274200006
WOS关键词	WATER-USE EFFICIENCY ; GRAIN-YIELD COMPONENTS ; PLANT-POPULATION DENSITY ; RADIATION USE EFFICIENCY ; SOWING DATE ; KERNEL WEIGHT ; DECISION-MAKING ; SEED NUMBER ; SOIL DEPTH ; GROWTH
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369739
作者单位	[Hernan Rotili, Diego; Angel Maddonni, Gustavo] Univ Buenos Aires, Fac Agron, Dept Prod Vegetal, Catedra Cerealicultura, Av San Martin 4453,C1417DSE, Buenos Aires, DF, Argentina; [Hernan Rotili, Diego; Maximiliano Tognetti, Pedro; Angel Maddonni, Gustavo] Univ Buenos Aires, Fac Agron, Inst Invest Fisiol & Ecol Vinculadas Agr IFEVA, CONICET, Buenos Aires, DF, Argentina; [Giorno, Agustin] AACREA, Buenos Aires, DF, Argentina; [Maximiliano Tognetti, Pedro] Univ Buenos Aires, Fac Agron, Dept Metodos Cuantitat & Sistemas Informac, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Hernan Rotili, Diego,Giorno, Agustin,Maximiliano Tognetti, Pedro,et al. Expansion of maize production in a semi-arid region of Argentina: Climatic and edaphic constraints and their implications on crop management[J],2019,226.
APA	Hernan Rotili, Diego,Giorno, Agustin,Maximiliano Tognetti, Pedro,&Angel Maddonni, Gustavo.(2019).Expansion of maize production in a semi-arid region of Argentina: Climatic and edaphic constraints and their implications on crop management.AGRICULTURAL WATER MANAGEMENT,226.
MLA	Hernan Rotili, Diego,et al."Expansion of maize production in a semi-arid region of Argentina: Climatic and edaphic constraints and their implications on crop management".AGRICULTURAL WATER MANAGEMENT 226(2019).