气候变化领域集成服务门户(CCPortal): Agroforestry could be one of the viable options to deal with terminal heat stress in wheat causing yield loss in Indo-Gangetic Plains

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DOI	10.1007/s10668-024-04731-1
	Agroforestry could be one of the viable options to deal with terminal heat stress in wheat causing yield loss in Indo-Gangetic Plains
	Singh, Avtar; Singh, Pritpal; Gill, R. I. S.
发表日期	2024
ISSN	1387-585X
EISSN	1573-2975
英文摘要	Agroforestry (AF) has played a significant role in the restoration and resilience of cropland ecosystems by mitigating carbon (C) emissions, while increasing crop productivity via modulation of micro-climate for underneath trees. The present study compared four land-use systems including three contrasting wheat (Triticum aestivum L.) based AF systems viz. deciduous poplar (Populus deltoides), dek (Melia composita) and evergreen eucalyptus (Eucalyptus tereticornis) vis-a-vis sole cultivation of seven wheat varieties during 2020-22 in the Indo-Gangetic Plains (IGPs) of north-western India. These results revealed that sole crop system has significantly (p < 0.05) higher grain (similar to 17.7-88.3%) and straw yield (similar to 34.4-88.8%), compared with AF based systems. Amongst the AF systems, poplar based system has significantly higher grain yield (similar to 44.1%) and contributing attributes viz. number of effective tillers m(-2) (similar to 8.1%), 1000-grain weight (similar to 27.2%) and spike length (similar to 27.8%), compared with the eucalyptus based AF system. Results revealed that wheat variety PBW-725 outperformed with similar to 14.1-28.1% higher grain and similar to 12.6-21.4% straw yield, compared with HD-3086 under different land-use systems. Nonetheless, root biomass of PBW-725 was significantly higher (similar to 13.2-22.7%) than the HD-3086. Similarly, root C yield of wheat varieties in sole crop system was significantly higher (similar to 28.2-127.3%) than the AF systems. Root and stubble biomass exhibited a linear significant relationship with total above-ground biomass of wheat (R-2 = 0.970* and 0.969*, respectively; p < 0.05). These results revealed a significantly decreased yield of grain (similar to 14.9%), straw (similar to 8.2%), root biomass (similar to 9.3%), grain C (similar to 9.9%) and root C (similar to 11.3%) during 2021-22 than 2020-21. The decreased wheat grain yield during 2021-22 than 2020-21 was ascribed to increased minimum temperature (T-min) by + 1.9 degrees C and maximum temperature (T-max) by + 2.1 degrees C at milking stage. At physiological maturity, higher T-min and T-max by + 1.5 degrees C and + 5.8 degrees C, respectively were responsible for decreased grain yield. Under poplar based AF system, PBW-725 and PBW-677 varieties exhibited a lowest impact of increased temperature with reduction in grain yield of similar to 8.7 and 2.0%, respectively. Conversely, in dek based AF system, HD-3226 outperformed under increased temperature conditions with grain yield advantage of similar to 6.8%. These results would help policymakers to implement an ecologically intensified strategy against foreseen climate change for the IGPs of north-western India.
英文关键词	Agronomic attributes; Root index; Shoot index; Phenological stages; Total organic C; Wheat productivity
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences
WOS记录号	WOS:001191078900002
来源期刊	ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/294945
作者单位	Punjab Agricultural University
推荐引用方式 GB/T 7714	Singh, Avtar,Singh, Pritpal,Gill, R. I. S.. Agroforestry could be one of the viable options to deal with terminal heat stress in wheat causing yield loss in Indo-Gangetic Plains[J],2024.
APA	Singh, Avtar,Singh, Pritpal,&Gill, R. I. S..(2024).Agroforestry could be one of the viable options to deal with terminal heat stress in wheat causing yield loss in Indo-Gangetic Plains.ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY.
MLA	Singh, Avtar,et al."Agroforestry could be one of the viable options to deal with terminal heat stress in wheat causing yield loss in Indo-Gangetic Plains".ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY (2024).