Advanced techniques using the plant as indicator of irrigation management

Esteves, Barbara dos Santos; Lousada, Lidiane de Lima; Sousa, Elias Fernandes de; Campostrini, Eliemar

doi:10.1590/0103-8478cr20140501

Cited by 3 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Irrigation management is critical in areas with insufficient water supplies and in drylands where water resource assessment and management are necessary for effective production as rainfall generally falls short of evapotranspiration demand ( Koch and Missimer, 2016 ). The use of sap flow sensors helps irrigation management and timing as they provide accurate data on plants water demand ( Jones, 2004 ; Esteves et al., 2015 ). Furthermore, such sensors are useful for managing irrigation based on soil and weather conditions.…”

Section: Importance Of Sap Flow Measurement In Trees and Plantsmentioning

confidence: 99%

Challenges and advances in measuring sap flow in agriculture and agroforestry: A review with focus on nuclear magnetic resonance

Kumar

Hosseinzadehtaher²,

Hein³

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Sap flow measurement is one of the most effective methods for quantifying plant water use.A better understanding of sap flow dynamics can aid in more efficient water and crop management, particularly under unpredictable rainfall patterns and water scarcity resulting from climate change. In addition to detecting infected plants, sap flow measurement helps select plant species that could better cope with hotter and drier conditions. There exist multiple methods to measure sap flow including heat balance, dyes and radiolabeled tracers. Heat sensor-based techniques are the most popular and commercially available to study plant hydraulics, even though most of them are invasive and associated with multiple kinds of errors. Heat-based methods are prone to errors due to misalignment of probes and wounding, despite all the advances in this technology. Among existing methods for measuring sap flow, nuclear magnetic resonance (NMR) is an appropriate non-invasive approach. However, there are challenges associated with applications of NMR to measure sap flow in trees or field crops, such as producing homogeneous magnetic field, bulkiness and poor portable nature of the instruments, and operational complexity. Nonetheless, various advances have been recently made that allow the manufacture of portable NMR tools for measuring sap flow in plants. The basic concept of the portal NMR tool is based on an external magnetic field to measure the sap flow and hence advances in magnet types and magnet arrangements (e.g., C-type, U-type, and Halbach magnets) are critical components of NMR-based sap flow measuring tools. Developing a non-invasive, portable and inexpensive NMR tool that can be easily used under field conditions would significantly improve our ability to monitor vegetation responses to environmental change.

show abstract

Section: Importance Of Sap Flow Measurement In Trees and Plantsmentioning

confidence: 99%

Challenges and advances in measuring sap flow in agriculture and agroforestry: A review with focus on nuclear magnetic resonance

Kumar

Hosseinzadehtaher²,

Hein³

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Advantage and disadvantage of sensing methods for crop water stress (modified from Peters, 2015;Esteves et al, 2015). …”

mentioning

confidence: 99%

Infrared Estimation of Canopy Temperature as Crop Water Stress Indicator

Kim¹,

Kim²,

Kim³

et al. 2015

Korean Journal of Soil Science and Fertilizer

View full text Add to dashboard Cite

Decision making by farmers regarding irrigation is critical for crop production. Therefore, the precision irrigation technique is very important to improve crop quality and yield. Recently, much attention has been given to remote sensing of crop canopy temperature as a crop water-stress indicator, because it is a scientifically based and easily applicable method even at field scales. This study monitored a series of time-variant canopy temperature of cucumber under three different irrigation treatments: under-irrigation (control), optimal-irrigation, and over-irrigation. The difference between canopy temperature (T c ) and air temperature (T a ), T c -T a , was calculated as an indicator of cucumber water stress. Vapor pressure deficit (VPD) was evaluated to define water stress on the basis of the temperature difference between leaf and air. The values of T c -T a was negatively related to VPD; further, cucumber growth in the under-and over-irrigated fields showed water stress, in contrast to that grown in the optimally irrigated field. Thus, thermal infrared measurements could be useful for evaluating crop water status and play an important role in irrigation scheduling of agricultural crops.

show abstract

Técnicas de dendrometria no manejo da irrigação: uma revisão integrativa

Sobrinho

Silva

Santos

et al. 2020

RSD

View full text Add to dashboard Cite

A dendrometria como indicador para o manejo racional da irrigação ainda vem sendo pauta de discussões nos últimos tempos devido à busca pelo menor consumo hídrico e aumento da eficiência no uso da água pelas culturas agrícolas. Tendo em vista a carência de informações, a presente revisão integrativa teve por objetivo apresentar um estudo sobre as técnicas de dendrometria utilizadas no manejo da irrigação que visam à determinação do consumo hídrico das culturas. Realizou-se um estudo com a coleta de dados a partir de fontes, por meio da pesquisa bibliográfica e revisão integrativa, tendo como pergunta norteada: as técnicas de dendrometria no manejo da irrigação garantem maior eficiência do uso da água e produção agrícola com menor consumo hídrico? Essas técnicas são baseadas na própria planta com necessidade de precisão na estimativa dos dados gerados e saber interpretá-los tornando um grande desafio no uso da dendrometria. A partir da análise de dados secundários disponíveis na literatura, as técnicas de dentrometria refletem sobre as interações entre a quantidade de água disponível no solo para a planta e a demanda hídrica da atmosfera. Por conseguinte, essas técnicas e outras estão sendo analisadas visando alcançar melhor eficiência do uso da água e a maior produção agrícola com menor consumo hídrico.

show abstract

Advanced techniques using the plant as indicator of irrigation management

Abstract: ABSTRACT

Cited by 3 publications

References 30 publications

Challenges and advances in measuring sap flow in agriculture and agroforestry: A review with focus on nuclear magnetic resonance

Challenges and advances in measuring sap flow in agriculture and agroforestry: A review with focus on nuclear magnetic resonance

Infrared Estimation of Canopy Temperature as Crop Water Stress Indicator

Técnicas de dendrometria no manejo da irrigação: uma revisão integrativa

Contact Info

Product

Resources

About