Navigation Links
Well-watered citrus tested in cold-acclimating temperatures
Date:1/31/2014

IMMOKALEE, FL--Commercial citrus growers are often challenged by environmental conditions in winter, including low seasonal rainfall that is typical in many citrus growing regions. Growers must rely on irrigation to sustain citrus crops through dry winters, so understanding how to determine citrus irrigation needs is critical for successful operations. Authors of a study published in HortScience noted that current methods used to determine moisture needs for citrus are limited, in that they do not account for effects of cold acclimation on water requirements. "Evidence suggests that at least some changes in plant water deficits occur as a result of cold temperatures and not dry soil," noted Robert Ebel, lead author of the study. "Changes in citrus water relations during cold acclimation and independent of soil moisture content are not well understood. Our study was conducted to characterize changes in plant relations of citrus plants with soil moisture carefully maintained at high levels to minimize drought stress."

Ebel and his colleagues conducted two experiments--the first in Immokalee, Florida, using potted sweet orange, and the second in Auburn, Alabama, using Satsuma mandarin trees. The citrus plants were exposed to progressively lower, non-freezing temperatures for 9 weeks. During the experiments trees were watered twice daily--three times on the days data were collected--to minimize drought stress.

Results of the experiments showed that soil moisture was higher for plants in the cold compared to plants in the warm chamber, and results showed that cold temperatures promoted stomatal closure, higher root resistance, lower stem water potential, lower transpiration, and lower stem water potential. Leaf relative water content was not different for cold-acclimated trees compared with the control trees. The key to minimizing drought stress, the scientists found, was carefully maintaining high soil moisture contents throughout the experiments, especially on the days that the measurements were performed.

"Our modern understanding of plant water relations has mainly evolved from studying growing plants at warm temperatures and in soils of varying moisture contents," Ebel explained. "However, this study demonstrates that those relationships are not consistent for citrus trees exposed to cold-acclimating temperatures."

The authors added that the study findings could have implications for commercial citrus growers who currently use traditional measures of determining irrigation scheduling during winter months.


'/>"/>
Contact: Mike W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Related biology news :

1. UC Riverside entomologist recognized for research in citrus entomology
2. Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study
3. New Research: Modified Citrus Pectin - A Potent Anti-Cancer Therapy
4. New study offers hope for halting incurable citrus disease
5. Geneticists receive funding to improve citrus production and health
6. Citrus fruit inspires a new energy-absorbing metal structure
7. PuraMed BioScience®, Inc., Launches a Marketing Blitz for LipiGesic® M, Its Clinically-Tested Migraine Pain Reliever in the Denver, CO Region to Coincide with the NACDSs Marketplace 2012 Trade Convention
8. Foundational concept of ecology tested by experiment
9. University of Houston engineering researchers theories to be tested in space
10. Turfgrass tested in shallow green roof substrates
11. Modeling buildings by the millions: Building codes in China tested for energy savings
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/6/2017)... -- Delta ID Inc., a leader in consumer-grade iris scanning ... CES® 2017. Delta ID has collaborated with Gentex Corporation ... of iris scanning as a secure, reliable and convenient ... car, and as a way to elevate the security ... ID and Gentex will demonstrate (booth #7326 LVCC) a ...
(Date:1/4/2017)... LAS VEGAS , Jan. 4, 2017 /PRNewswire/ ... in performance biometric sensor technology, today announced the ... Benchmark™ sensor systems, the highly-accurate biometric sensor ... ® biometric technology, experience and expertise. The ... of Benchmark designed specifically for hearables, and Benchmark ...
(Date:12/22/2016)...  As part of its longstanding mission to improve genetic ... recently released its latest children,s book, titled The ... the topics of inheritance and variation of traits that are ... elementary school classrooms in the US. The ... Ariana Killoran , whose previous book with 23andMe, ...
Breaking Biology News(10 mins):
(Date:1/18/2017)... ... January 18, 2017 , ... Whitehouse Labs ... Within Albany Molecular Research, Inc. (AMRI), the scientific staff dedicated to Extractables / ... planned for further growth in 2017. Extractable & Leachable evaluations have become increasingly ...
(Date:1/18/2017)... , ... January 18, 2017 , ... ... paralysis, today announced that it has submitted a 510(k) to the FDA, requesting ... utilize MYOLYN’s patent-pending functional electrical stimulation (FES) technology. , The submission marks ...
(Date:1/18/2017)... KING OF PRUSSIA, PA (PRWEB) , ... January ... ... to disrupt clinical operations again at the CHI SCOPE Summit for Clinical Ops ... and AstraZeneca in engaging panel discussions to examine vital clinical research issues such ...
(Date:1/18/2017)... ... January 18, 2017 , ... uBiome, the leading microbial ... its Science Editor, Dr. Elisabeth Bik, in the December 2016 issue of the ... uBiome in October 2016 from her previous position at Stanford University School of ...
Breaking Biology Technology: