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

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

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: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Porous crystalline materials: TU Graz researcher shows method for controlled growth

07.12.2016 | Materials Sciences

Simple processing technique could cut cost of organic PV and wearable electronics

06.12.2016 | Materials Sciences

3-D printed kidney phantoms aid nuclear medicine dosing calibration

06.12.2016 | Medical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>