干旱区生态环境知识资源中心(Arid): Biochar Implications Under Limited Irrigation for Sweet Corn Production in a Semi-Arid Environment

Arid

DOI	10.3389/fpls.2022.853746
	Biochar Implications Under Limited Irrigation for Sweet Corn Production in a Semi-Arid Environment
	Singh, Manpreet; Singh, Sukhbir; Parkash, Ved; Ritchie, Glen; Wallace, Russell W.; Deb, Sanjit K.
通讯作者	0
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2022
卷号	13
英文摘要	The integration of biochar and deficit irrigation is increasingly being evaluated as a water-saving strategy to minimize crop yield losses under reduced irrigation in arid and semi-arid regions such as West Texas. A 2-year (2019 and 2020) open-field study evaluated the effect of two types of biochar amendments (hardwood and softwood) and three irrigation rates [100, 70, and 40% crop evapotranspiration (ETc) replacement] on the physiology, plant growth, and yield of sweet corn in semi-arid West Texas. All experimental units were replicated four times in a split-plot design. The chlorophyll content (Chl(SPAD)) in 40% ETc dropped significantly compared to 100% ETc and 70% ETc during the reproductive phase. Although water stress under 40% ETc decreased photosynthesis (P-n) to limit transpiration (E) by stomatal closure, it improved intrinsic water use efficiency (iWUE). The above-mentioned gas exchange parameters were comparable between 100% ETc and 70% ETc. Both biochar treatments increased Chl(SPAD) content over non-amended plots, however, their effect on gas exchange parameters was non-significant. All growth and yield-related parameters were comparable between 100% ETc and 70% ETc, but significantly greater than 40% ETc, except water productivity (WP). Both deficit irrigation treatments improved WP over full irrigation in 2019, but in 2020, the WP gains were observed only under 70% ETc. Hardwood biochar decreased soil bulk density and increased soil porosity, but it had a marginal effect on the water retention characteristics. These results suggest that 70% ETc can be used as an alternative to full irrigation to save water with a minimal yield penalty for sweet corn production in the West Texas region. The hardwood biochar application improved the vegetative biomass significantly but yield marginally during the first 2 years of application. A long-term study is required to test the effect of biochar under deficit irrigation beyond 2 years.
英文关键词	water productivity water holding capacity drought stress semi-arid physiology photosynthesis plant available water
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000876179400001
WOS关键词	WATER-USE EFFICIENCY ; DEFICIT IRRIGATION ; YIELD COMPONENTS ; SOIL ; GROWTH ; MAIZE ; STRATEGIES ; SHORTAGE ; DROUGHT ; QUALITY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392834
推荐引用方式 GB/T 7714	Singh, Manpreet,Singh, Sukhbir,Parkash, Ved,et al. Biochar Implications Under Limited Irrigation for Sweet Corn Production in a Semi-Arid Environment[J],2022,13.
APA	Singh, Manpreet,Singh, Sukhbir,Parkash, Ved,Ritchie, Glen,Wallace, Russell W.,&Deb, Sanjit K..(2022).Biochar Implications Under Limited Irrigation for Sweet Corn Production in a Semi-Arid Environment.FRONTIERS IN PLANT SCIENCE,13.
MLA	Singh, Manpreet,et al."Biochar Implications Under Limited Irrigation for Sweet Corn Production in a Semi-Arid Environment".FRONTIERS IN PLANT SCIENCE 13(2022).