Arid
DOI10.1016/j.fcr.2013.01.018
Characterization of north-eastern Australian environments using APSIM for increasing rainfed maize production
Chauhan, Y. S.1; Solomon, K. F.2; Rodriguez, D.3
通讯作者Chauhan, Y. S.
来源期刊FIELD CROPS RESEARCH
ISSN0378-4290
出版年2013
卷号144页码:245-255
英文摘要

Recurring water stresses are a major risk factor for rainfed maize cropping across the highly diverse agro-ecological environments of Queensland (Qld) and northern New South Wales (NNSW). Enhanced understanding of such agro-ecological diversity is necessary to more consistently sample target production environments for testing and targeting release of improved germplasm, and to improve the efficiency of the maize pre-breeding and breeding programs of Qld and New South Wales. Here, we used the Agricultural Production Systems Simulator (APSIM) - a well validated maize crop model to characterize the key distinctive water stress patterns and risk to production across the main maize growing regions of Qld and NNSW located between 15.8 degrees and 31.5 degrees S, and 144.5 degrees and 151.8 degrees E. APSIM was configured to simulate daily water supply demand ratios (SDRs) around anthesis as an indicator of the degree of water stress, and the final grain yield. Simulations were performed using daily climatic records during the period between 1890 and 2010 for 32 sites-soils in the target production regions. The runs were made assuming adequate nitrogen supply for mid-season maize hybrid Pioneer 3153. Hierarchical complete linkage analyses of the simulated yield resulted in five major clusters showing distinct probability distribution of the expected yields and geographic patterns. The drought stress patterns and their frequencies using SDRs were quantified using multivariate statistical methods. The identified stress patterns included no stress, mid-season (flowering) stress, and three terminal stresses differing in terms of severity. The combined frequency of flowering and terminal stresses was highest (82.9%), mainly in sites-soils combinations in the west of Qld and NNSW. Yield variability across the different sites-soils was significantly related to the variability in frequencies of water stresses. Frequencies of water stresses within each yield cluster tended to be similar, but different across clusters. Sites-soils falling within each yield cluster therefore could be treated as distinct maize production environments for testing and targeting newly developed maize cultivars and hybrids for adaptation to water stress patterns most common to those environments. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.


英文关键词APSIM model Water stress Yield Zea mays L
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000317876600028
WOS关键词ARID TROPICAL ENVIRONMENT ; AFFECTING GRAIN-SORGHUM ; PEARL-MILLET ; YIELD ; SIMULATION ; GENOTYPE ; PATTERNS ; SYSTEMS ; MODEL ; TEMPERATURE
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177123
作者单位1.DAFF, Kingaroy, Qld, Australia;
2.DAFF, Hermitage Res Stn, Warwick 4370, Australia;
3.Univ Queensland, QAAFI, Toowoomba, Qld 4350, Australia
推荐引用方式
GB/T 7714
Chauhan, Y. S.,Solomon, K. F.,Rodriguez, D.. Characterization of north-eastern Australian environments using APSIM for increasing rainfed maize production[J],2013,144:245-255.
APA Chauhan, Y. S.,Solomon, K. F.,&Rodriguez, D..(2013).Characterization of north-eastern Australian environments using APSIM for increasing rainfed maize production.FIELD CROPS RESEARCH,144,245-255.
MLA Chauhan, Y. S.,et al."Characterization of north-eastern Australian environments using APSIM for increasing rainfed maize production".FIELD CROPS RESEARCH 144(2013):245-255.
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