干旱区生态环境知识资源中心(Arid): Effect of field of view of canopy temperature observations on crop water stress index for irrigation scheduling

Arid

DOI	10.2166/ws.2023.313
	Effect of field of view of canopy temperature observations on crop water stress index for irrigation scheduling
	Yadav, Aditi; Upreti, Hitesh; Singhal, Gopal Das
通讯作者	Yadav, A
来源期刊	WATER SUPPLY
ISSN	1606-9749
EISSN	1607-0798
出版年	2023
卷号	23 期号:12 页码:4976-4990
英文摘要	The monitoring of canopy temperature (T-c) helps to establish appropriate watering methods. This study calculates the crop water stress index (CWSI) for four irrigation regimes in semi-arid region, India. Plots 1, 2, 3, and 4 had soil moisture depletion of 50% (drip system), 25% (drip system), unregulated (farmer replicated flood system), and 50% (flood system) with irrigation. In this work, we examined the value of employing a portable infrared thermometer (IRT) to measure wheat canopy temperature (T-c) at two geographical locations. The IRT field of view is 51.28-5,128 cm(2), or 10-100 cm from the canopy crown. The field of view change from 10 to 100 cm affects T-c and CWSI in the four irrigation treatments, ranging from 0.65 to 2.71% and 9.2 to 36.4%, respectively. The research found that increasing the IRT from 10 to 100 cm reduced slope by 5.7% and intercept by 20.6% in lower baselines. The R-2 for CWSI and soil moisture was 0.78 (10 cm) and 0.77 (100 cm). Drip-irrigated plots are more sensitive to IRT spatial resolution than flood-irrigated plots. The findings suggest that CWSI studies may benefit from specific sample methods for T-c evaluation.
英文关键词	canopy temperature drip irrigation flood irrigation irrigation scheduling wheat
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001110196500001
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/399178
推荐引用方式 GB/T 7714	Yadav, Aditi,Upreti, Hitesh,Singhal, Gopal Das. Effect of field of view of canopy temperature observations on crop water stress index for irrigation scheduling[J],2023,23(12):4976-4990.
APA	Yadav, Aditi,Upreti, Hitesh,&Singhal, Gopal Das.(2023).Effect of field of view of canopy temperature observations on crop water stress index for irrigation scheduling.WATER SUPPLY,23(12),4976-4990.
MLA	Yadav, Aditi,et al."Effect of field of view of canopy temperature observations on crop water stress index for irrigation scheduling".WATER SUPPLY 23.12(2023):4976-4990.