Terroir 2008 banner
IVES 9 IVES Conference Series 9 Ten years soil diagnosis in vineyards, with particularly analysis of organic and microbial mass and measuring their evolution

Ten years soil diagnosis in vineyards, with particularly analysis of organic and microbial mass and measuring their evolution

Abstract

Since 1996, we study the soil in viticulture, specially in the South of France. In the field, we delimit soil units and observe soil profiles and take samples to analyse its physical, mineral, organic and microbial mass composition. We also analyse the rate of roots mycorhization. 
For few years we used both Y. HERODY (BRDA) analysis and Xavier SALDUCCI (CELESTA) ones. Since 2004 we have adopted only Xavier SALDUCCI analysis menu : two compartments of organic matters, microbial mass and mineralization activities of carbon and nitrogen. 
Here are shown the results of 100 organic and biological analysis: 
– Carbon level is low to very low (less than 10 g /kg ) : 56% of the plots. 
– Nitrogen level is low to very low (less than 1 g/kg) : 64% of the plots. 
– Microbial mass is low in 71% of the plots (less than 200 mg of microbial C /kg). No plot has a level higher than 400mg of microbial C /kg. 
– Carbon Mineralization Activity is high to very high, more than 400mg mg C-CO2 /kg/28 days, in 49% of the plots 
– Nitrogen Mineralization Activity is low to very low (less than 1 mg de N-NO3– N-NH4+ /kg/28 days) : 53% of the plots. 
Since 2006, we control organic and biological evolution specially in plots where green manures and composted organic matters have been used. In 4 plots where the analysis showed (in 2001) a very high lake of organic matter and microbial mass, we not that : 
– The organic matter level has been partially improved . Bt the rate is still low in two parcels. 
– The microbial mass has been improved even it is still low in two parcels. 
Even, if the levels are still low, the vine is more healthy : no more nutrients deficiency symptom, the vine growth is more homogenous, the yield and the crop quality have increased, with a real expression of the “Terroir”. 

Download the PDF

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Karim RIMAN 

Consultant en agriculture écologique 
Mas de La Cigalière – RN 100 – 84250 Le Thor – France 

Contact the author

Keywords

diagnostic du sol viticole, matière organique, biomasse microbienne, minéralisations du carbone et de l’azote

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Characterization and application of silicon carbide (SiC) membranes to oenology

After fermentations, the crude wine is a turbid medium not accepted by the consumer therefore, it needs to be filtered

Read More

Foam characteristics of white, rosé and red sparkling wines elaborated by the champenoise method

Contribution Foam is the characteristic that differentiates sparkling wines from still wines, being the first sensory attribute that tasters and consumers perceive and that determines the final quality of sparkling wines [1]. The foaming properties mainly depend on the chemical composition of wines [2-3], and different factors involved in wine composition will have an effect on foam quality. In Spain, the sparkling wine market focuses on the production of white and rosé sparkling wine, with very low production of red sparkling wines. However, this type of wines is elaborated in countries like Australia, South-Africa, Argentina, Italy or Portugal, with a great acceptance by consumers. No studies on the foaming characteristics of red sparkling wines have been found.

Read More

Use of satellite in precision viticulture: the Franciacorta experience

Today, the concept of precision vine management (or site-specific viticulture) has a great relevance. It is based on the practice of a different management in relation to the different features of the crop site. In this way, all practices should be adapted to the land spatial variability and should be linked to the real needs of vines.

Read More

Territoires et zones viticoles. Aspects climatiques, pédologiques, agronomiques. Caractérisation des terroirs viticoles: une étude systémique

On assiste actuellement à l’émergence d’une demande sociale forte à l’égard de fonctions par ailleurs traditionnelles de l’agriculture, qui concernent la gestion des ressources du milieu, le maintien d’un tissu social rural, la valorisation des territoires ruraux et l’entretien des paysages.

Read More

Plant nitrogen assimilation and partitioning as a function of crop load

Aims: The optimization of nitrogen use efficiency (NUE, i.e. uptake, assimilation and partitioning) is a solution towards the sustainable production of premium wines, while reducing fertilization and environmental impact. The influence of crop load on the accumulation of N compounds in fruits is still poorly understood. The present study assesses the impacts of bunch thinning on NUE and the consequences on the free amino N (FAN) profile in fruits.

Read More