气候变化领域集成服务门户(CCPortal): Evaluating corn production under different plant spacings through integrated modeling approach and simulating its future response under climate change scenarios

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DOI	10.1016/j.agwat.2024.108691
	Evaluating corn production under different plant spacings through integrated modeling approach and simulating its future response under climate change scenarios
	Chauhdary, Junaid Nawaz; Li, Hong; Akbar, Nadeem; Javaid, Maria; Rizwan, Muhammad; Akhlaq, Muhammad
发表日期	2024
ISSN	0378-3774
EISSN	1873-2283
起始页码	293
卷号	293
英文摘要	The use of advanced resource conservation techniques is the need of time for higher crop production under the challenges of water scarcity and climate change. The present study was planned (1) to evaluate different plant spacing of corn, sown under raised bed planting (RBP) for higher productivity, (2) calibrate APSIM model for experimental treatments and (3) simulate future (2022-2100) crop response under different scenarios of climate change. The two-year research experiments were conducted on corn with four different plant spacings (S1:15 cm, S2:17.5 cm, S3:20 cm and S4:22.5 cm) under RBP. The crop response was evaluated in terms of leaf area index (LAI), plant height, flowering date, grains per cob, grain yield, biomass yield, harvest index (HI) and water productivity. The S1 treatment produced the highest productivity in terms of grain yield (7.16 Mg/hm2), biomass yield (16.57 Mg/hm2), HI (0.44) and water productivity (1.33 kg/m3). APSIM model was calibrated and its ability to simulate crop response during validation was confirmed from the values of RMSE, NRMSE, R2, CRM and NSE as 0.4, 0.21, 0.83, 0.04 and 0.68 for grain yield. The RMSE and NRMSE were 0.79 and 0.14 for biomass yield. The value of R2 ranged from 0.69 to 0.85, CRM from -0.03 to 0.005, NSE from 0.69 to 0.86 for biomass yield, plant height and LAI. During scenario simulations, the model run was performed against different plant spacing for optimization and results revealed that 10 cm plant spacing produced highest corn yield and growth parameters. Further simulations (2022-2100) were performed using climatic data, acquired from different general circulation model (GCMs) for two rcps (4.5 and 8.5) and results revealed the reduction in grain and biomass yields by 8-14 % and 10-28 %, respectively against different data sources (GCMs). Optimized plant spacing (10 cm) under RBP produced 35.5 % more grain yield and 29.3 % more biomass yield than that under control treatment (ridge-furrow system). Based on the research findings, it is recommended that conservation technique like RBP needs to be adopted in semi-arid regions to mitigate the impact of climate change in terms of future temperature rise for better corn production.
英文关键词	APSIM model; Climate change; Corn; Raised bed planting; GCM (general circulation model)
语种	英语
WOS研究方向	Agriculture ; Water Resources
WOS类目	Agronomy ; Water Resources
WOS记录号	WOS:001174556200001
来源期刊	AGRICULTURAL WATER MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309499
作者单位	Jiangsu University; University of Agriculture Faisalabad; University of Agriculture Faisalabad; Jiangsu University
推荐引用方式 GB/T 7714	Chauhdary, Junaid Nawaz,Li, Hong,Akbar, Nadeem,et al. Evaluating corn production under different plant spacings through integrated modeling approach and simulating its future response under climate change scenarios[J],2024,293.
APA	Chauhdary, Junaid Nawaz,Li, Hong,Akbar, Nadeem,Javaid, Maria,Rizwan, Muhammad,&Akhlaq, Muhammad.(2024).Evaluating corn production under different plant spacings through integrated modeling approach and simulating its future response under climate change scenarios.AGRICULTURAL WATER MANAGEMENT,293.
MLA	Chauhdary, Junaid Nawaz,et al."Evaluating corn production under different plant spacings through integrated modeling approach and simulating its future response under climate change scenarios".AGRICULTURAL WATER MANAGEMENT 293(2024).