干旱区生态环境知识资源中心(Arid): Infrared Radiometry as a Tool for Early Water Deficit Detection: Insights into Its Use for Establishing Irrigation Calendars for Potatoes Under Humid Conditions

Arid

DOI	10.1007/s11540-018-9400-5
	Infrared Radiometry as a Tool for Early Water Deficit Detection: Insights into Its Use for Establishing Irrigation Calendars for Potatoes Under Humid Conditions
	Rinza, Javier 1; Ramirez, David A.1,2,3; Garcia, Jeronimo 2; de Mendiburu, Felipe 2; Yactayo, Wendy 1; Barreda, Carolina 1; Velasquez, Teresa 2; Mejia, Abel 2; Quiroz, Roberto 4
通讯作者	Ramirez, David A.
来源期刊	POTATO RESEARCH
ISSN	0014-3065
EISSN	1871-4528
出版年	2019
卷号	62 期号:2 页码:109-122
英文摘要	Low radiation is one of the most important factors which limits potential yield in potato. Under humid conditions, the dominance of diffuse radiation not only imposes challenges for radiation use efficiency in crops but also limits the water status surveillance through non-invasive methods like infrared radiometry. This study was carried out in the humid desert of the Peruvian central coast with the aim to relate maximum stomatal conductance (g(s_max), an important water status indicator) with leaf and air temperature (dT) and crop water stress index (CWSI). In a potted trial, g(s_max) vs. dT were compared along the day in well-irrigated (field capacity) and water restricted (half field capacity) plants. In an additional field experiment, CWSI was validated by testing two irrigation timing treatments with pre-established g(s_max) threshold (0.15 [T1] and 0.50 [T2] mol H2O m(-2) s(-1)) against a control (frequently irrigated). An acute stomatal closure sensitivity was detected which drove a g(s_max) fall (gs down arrow) near the solar noon. The intense stomatal closure caused a dT rise which showed positive higher values (>2 degrees C) after g(s)down arrow. The significant yield reduction of T1 in relation to the control (-38.2 +/- 10.7%) highlighted that g(s_max) values >0.15 must be used to warrant a high potato yield. These findings support the use of CWSI values <= 0.3-0.4 as thresholds for an appropriate irrigation in potatoes with assessments taken at around 15:00 hours, time in which plants have accumulated enough radiation allowing an appropriate detection of thermal emission under humid conditions.
英文关键词	Carbon isotope discrimination Crop water stress index Humid conditions Infrared radiometry Maximum stomatal conductance Solanum tuberosum
类型	Article
语种	英语
国家	Peru ; Peoples R China ; Costa Rica
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000469799600001
WOS关键词	STOMATAL CONDUCTANCE ; CANOPY TEMPERATURE ; DROUGHT TOLERANCE ; TUBEROSUM L. ; PHOTOSYNTHESIS ; STRESS ; YIELD ; GROWTH ; RESPONSES ; IRRADIANCE
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218156
作者单位	1.Int Potato Ctr CIP, Ap 1558, Lima, Peru; 2.Univ Nacl Agr La Molina, Av La Molina S-N, Lima, Peru; 3.Gansu Agr Univ, Gansu Key Labs Arid & Crop Sci Crop Genet & Germp, Agron Coll, Lanzhou 730070, Gansu, Peoples R China; 4.Trop Agr Res & Higher Educ Ctr CATIE, Turrialba, Cartago, Costa Rica
推荐引用方式 GB/T 7714	Rinza, Javier,Ramirez, David A.,Garcia, Jeronimo,et al. Infrared Radiometry as a Tool for Early Water Deficit Detection: Insights into Its Use for Establishing Irrigation Calendars for Potatoes Under Humid Conditions[J],2019,62(2):109-122.
APA	Rinza, Javier.,Ramirez, David A..,Garcia, Jeronimo.,de Mendiburu, Felipe.,Yactayo, Wendy.,...&Quiroz, Roberto.(2019).Infrared Radiometry as a Tool for Early Water Deficit Detection: Insights into Its Use for Establishing Irrigation Calendars for Potatoes Under Humid Conditions.POTATO RESEARCH,62(2),109-122.
MLA	Rinza, Javier,et al."Infrared Radiometry as a Tool for Early Water Deficit Detection: Insights into Its Use for Establishing Irrigation Calendars for Potatoes Under Humid Conditions".POTATO RESEARCH 62.2(2019):109-122.