Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Saving Water without Hurting Peach Production

21.11.2012
U.S. Department of Agriculture (USDA) scientists are helping peach growers make the most of dwindling water supplies in California's San Joaquin Valley.

Agricultural Research Service (ARS) scientist James E. Ayars at the San Joaquin Valley Agricultural Sciences Center in Parlier, Calif., has found a way to reduce the amount of water given post-harvest to early-season peaches so that the reduction has a minimal effect on yield and fruit quality. ARS is USDA's principal intramural scientific research agency, and the research supports the USDA priority of promoting international food security.

The valley has about 25,000 acres of peach orchards that must be irrigated throughout the summer. Early-season peaches are normally harvested in May, but require most of their water from June through September, a time when temperatures and demands for water are at their highest. Snow packs in the Sierra Nevada have traditionally been a sufficient water source for growers, but earlier snowmelts have made water more precious with each summer. Wells that supply the valley have had to reach deeper to meet increasing demands.

Ayars and ARS scientist Dong Wang, also based at Parlier, irrigated a 4-acre plot of early-season peach trees from March to the May harvest. From June to September, they gave the trees either 25 percent of the amount of water they'd normally receive, 50 percent of the normal amount, or 100 percent. The scientists measured soil water content once a week to be sure that even with periodic rainfall, trees were given appropriate deficit-irrigation treatments. They also used three types of irrigation systems: microspray, subsurface drip irrigation, and furrow irrigation, in which water is distributed in shallow canal-like rows near the trees. Defective fruit were counted and removed after each harvest.

The results showed that reducing post-harvest irrigation levels to 25 percent of the normal amount had negative effects on yield and fruit quality, but that giving 50 percent less water than normal had minimal effects on the following year's quality and yield. The subsurface drip irrigation systems tended to have the lowest yields within a given year, but differences were generally not statistically significant. The researchers also found that trees needed less pruning and maintenance because the deficit irrigation slowed plant growth.

The results of this study have been submitted to the scientific journal HortScience for publication.

Read more about this research in the November/December 2012 issue of Agricultural Research magazine.

Dennis O'Brien | EurekAlert!
Further information:
http://www.ars.usda.gov

More articles from Agricultural and Forestry Science:

nachricht How much drought can a forest take?
20.01.2017 | University of California - Davis

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>