Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Response of vine to different irrigation policies

17.07.2003


Gonzaga Santesteban, lecturer at the Public University of Navarre, concluded his thesis stating that a generalised recommendation on vine irrigation cannot be offered as the factors involved are diverse: the terrain where the vine is planted, the climate on the zone and the quantity of grape involved.



Problems with irrigation policy

Gonzaga Santesteban has investigated “The effect of irrigation on the quality of the grape and the wine in the Tempranillo variety”.


It has to be remembered that vine irrigation presents difficulties given that if the grape seed is too large the wine is not of good quality. This is why, as a general rule, it is accepted that although excessive irrigation impedes enologically high-quality harvests, it is difficult to predict the results of any one specific policy.

The research led by Gonzaga Santesteban is, basically, aimed at finding a method which will enable the wine-grower, who is the person who makes the decisions on irrigation, to be correctly advised .

Trials on vineyards in Corella

A series of trials were carried out on a 3.2 hectare estate in Corella in Navarra.

The estate was divided into four sectors each of which, over a period of three years, was subjected to a dosage of three irrigation plans a year. This enabled the analysis of a large number of situations differentiated by the initial conditions of the plants (vigour, potential crop and fertility of the young shoots) and by the level of stress they supported.

After the analysis of the results, the researchers came to the conclusion that no general recommendation on irrigation could be given. It was shown that, if the plant does not have water during the months of August and September, which is when the grape matures, photosynthesis is halted and the grape does not mature sufficiently. On the other hand, it is also true that, if the plant has too much water over this period, the maturing fruit grows too much and the quality is not good, either. In short, an irrigation plan has to be tailored to the type of soil and the quantity of grape which the vine carries.

In order to determine a plan for irrigation, the researchers propose the following method: assess the water needs of the plant. This is done by using a standard measure: the foliar water potential measured before daybreak, which is when the plant has most water.

The results of the research team has enabled mathematical models to be established which can predict precisely the size of the growing grapes, their sugar concentration and the end yield of the vine plants. These models are of great use when taking decisions in the field regarding the pruning potential crop and

Iñaki Casado Redin | Basque research
Further information:
http://www.unavarra.es

More articles from Agricultural and Forestry Science:

nachricht Energy crop production on conservation lands may not boost greenhouse gases
13.03.2017 | Penn State

nachricht How nature creates forest diversity
07.03.2017 | International Institute for Applied Systems Analysis (IIASA)

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: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>