Optimal nitrogen, fertigation system recommended for minimizing transplant shock in globe artichokes
According to the authors of a new study, transplant shock is very common in globe artichoke grown in semiarid regions of the United States; high air temperatures and drought stress after transplanting can delay root and shoot growth and significantly reduce marketable yield.
A study of globe artichoke determined impacts of pretransplant management of nitrogen and fertigation system on transplant quality and subsequent growth. Photos show artichoke transplant roots after 8 week of fertigation using 150 and 75 ppm N solution (top), and evaluation of transplant stem plasticity and root quality determined by using a digital force attached to a vertical motorized force tester (bottom).
Photo courtesy of Daniel Leskovar
To counteract the effects of heat and insufficient irrigation on artichoke crops, researchers are seeking to determine the best nursery practices for plant nutrition and irrigation.
The researchers also set out to determine if the fertigation method and nitrogen level used in the nursery significantly modifies early vegetative growth or yield when artichokes are grown under surface, subsurface, and overhead linear irrigation.
Leskovar and Othman said the study results (HortScience, May 2016) can be used to improve transplant quality and stand establishment of globe artichoke when transplanted in hot and drought-prone environments.
Artichoke transplants fertilized with 75 mg·L-1 N (low N) had improved root length and surface area and produced shorter and compact transplants, resulting in seedlings more tolerant to field stresses after transplanting in the field. Analyses also showed that artichoke transplants with low level N did not result in yield reductions as compared with transplants grown with high N level under linear, surface, and subsurface drip irrigation.
"This is the first study of globe artichoke that addressed the impact of pretransplant management of nitrogen and fertigation system on transplant quality and subsequent growth, physiology, and yield responses under three distinctive field irrigation systems," the authors noted.
"It demonstrates the importance of N level on improving the overall transplant root system and growth components of globe artichoke containerized transplants and the subsequent adaptation to irrigated field conditions in a semiarid environment."
The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.
Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education, and application. More information at ashs.org.
Michael W. Neff | EurekAlert!
Climate change, population growth may lead to open ocean aquaculture
05.10.2017 | Oregon State University
New machine evaluates soybean at harvest for quality
04.10.2017 | University of Illinois College of Agricultural, Consumer and Environmental Sciences
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
17.10.2017 | Life Sciences
17.10.2017 | Life Sciences
17.10.2017 | Earth Sciences