气候变化领域集成服务门户(CCPortal): Responses of winter wheat genotypes to reduced rainfall, nitrogen fertilization and pre-crops in Switzerland

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DOI	10.1016/j.fcr.2024.109272
	Responses of winter wheat genotypes to reduced rainfall, nitrogen fertilization and pre-crops in Switzerland
	Bongiovani, Paola de F.; Frossard, Emmanuel; Noia Junior, Rogerio de S.; Asseng, Senthold; Vuille-dit-Bille, Nicolas; Burton, Amanda; Herrera, Juan M.
发表日期	2024
ISSN	0378-4290
EISSN	1872-6852
起始页码	308
卷号	308
英文摘要	Problem: Wheat (Triticum aestivum L.) yields may be reduced by projected rainfall decline due to climate change as well as environmental protection demands for less nitrogen (N) fertilizer inputs. Research question: Therefore, our study aims to determine how projected decreases in rainfall due to climate change and the reduction of N fertilizer inputs might impact the production of different wheat genotypes. Methods: A field experiment was carried out in a warm -summer humid continental climate in Switzerland with two water treatments: rainfed and rainout shelters to reduce rainfall during grain filling. This was overlaid with two N treatments (non -fertilized and enough N supply to reach 180 kg N ha (-1)), four winter wheat genotypes, and three pre -crops (barley, Hordeum vulgare L.; oilseed rape, Brassica napus L.; winter pea, Pisum sativum L.) across three field seasons. Grain yield and protein content, yield related components, water-soluble carbohydrates (WSC), N use efficiency (NUE) and N associated traits, were among the assessed variables. Additionally, soil mineral N (Nmin) was measured at beginning of tillering. The three seasons encompassed both average and above average precipitation. The rainout shelter extended the rainfall range to low rainfall during grain filling, compared to the last 30 years. Results: The reduced rainfall during grain filling had no impact on yield, regardless of crop season, N fertilizer application, pre -crop, initial Nmin, or genotype. N fertilizer applications had no impact on wheat yield when fields had an initial Nmin > 50 kg N ha (-1), nor after a poor crop establishment caused by a wet autumn. During a wet season with initial Nmin <= 50 kg N ha (-1), wheat responded to N fertilizer after a brassica pre -crop, but less so after a legume or a cereal crop. The genotype with a mean of 29% more grains per unit area, yielded up to 8.2 t ha (-1) in one plot and, on average, about 25% higher than the mean of the other genotypes. Conclusions: In the short term, wheat production in warm -summer humid continental climates appears resilient to projected rainfall decline from climate change and reductions of N fertilizer inputs, but excessive rainfall during sowing causing poor crop establishment might be much more devastating. The impact on wheat yields observed only on the third year of consecutive cultivation without N fertilizer, suggests the potential for decreasing N supply over a few years. Implications or significance: This study underscores wheat's short-term resilience to drought and reduced N use, bolstering food security efforts.
英文关键词	Nitrogen management; Climate projections; Nitrogen use efficiency; Crop rotation; Rainout shelter; Fertilizer rate
语种	英语
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:001177554200001
来源期刊	FIELD CROPS RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289009
作者单位	Swiss Federal Research Station Agroscope; Swiss Federal Institutes of Technology Domain; ETH Zurich; Technical University of Munich
推荐引用方式 GB/T 7714	Bongiovani, Paola de F.,Frossard, Emmanuel,Noia Junior, Rogerio de S.,et al. Responses of winter wheat genotypes to reduced rainfall, nitrogen fertilization and pre-crops in Switzerland[J],2024,308.
APA	Bongiovani, Paola de F..,Frossard, Emmanuel.,Noia Junior, Rogerio de S..,Asseng, Senthold.,Vuille-dit-Bille, Nicolas.,...&Herrera, Juan M..(2024).Responses of winter wheat genotypes to reduced rainfall, nitrogen fertilization and pre-crops in Switzerland.FIELD CROPS RESEARCH,308.
MLA	Bongiovani, Paola de F.,et al."Responses of winter wheat genotypes to reduced rainfall, nitrogen fertilization and pre-crops in Switzerland".FIELD CROPS RESEARCH 308(2024).