Behaviour of the Cabernet Franc grapevine variety in various « terroirs » of the Loire Valley. Influence of the precocity on the composition of the harvested grapes for a normal climatic year (example of the year 1988)

OENO One ◽  
1998 ◽  
Vol 32 (2) ◽  
pp. 69 ◽  
Author(s):  
Gérard Barbeau ◽  
René Morlat ◽  
Christian Asselin ◽  
A. Jacquet ◽  
C. Pinard
Keyword(s):  
Organic Acids ◽  
Leaf Area ◽  
Research Programme ◽  
Harvest Time ◽  
Wine Quality ◽  
Phenological Stages ◽  
Cabernet Franc ◽  
Loire Valley

<p style="text-align: justify;">In the framework of a research programme on the “ terroirs ” in viticulture, a red of experimental plots was established in the Loire Valley area in 1978 with the Cabernet Franc variety. In 1988, eleven of those plots were given an intensive follow-up, with special emphasis on the phenological stages, the growth and development of the vegetative apparatus and the composition of the grapes at harvest time. After a few years, we can consider that 1988 was an average year for the last fifteen vintages, both on the climatic side and on the wine quality side. Therefore it seems to be justified to use the data of that particular year to study the “ terroir ” effect on the composition of the grapes. The results show important differences between “ terroirs ” in terms of precocity of the phenological stages, stems growth, setting of the leaf area, vigour and productivity of the plants. These differences are found also during the maturity process and at harvest time ; sugars, organic acids, anthocyanins and polyphenols are concerned. An index for measuring the precocity of the grapevine cycle on each “ terroir ” is used to compare the “ terroirs ” and to establish relationships with the composition of the grapes at harvest time. Through the analysis of the data, it is possible to distinguish two groups of factors which determine the behaviour of grapevine in a given “ terroir ”. The first one is related to the precocity of the cycle of the plant ; it influences the quality of the grapes at harvest time. The second is related to the vigour ; it is linked to the productivity of the plants.and the acidity of the must. The level of development of the primary leaf area at flowering time seems to play an important role in relation with the composition of the grapes in sugars, organic acids and anthocyanins ; the earlier the flowering, the better the relationship.</p>

scholarly journals Desenvolvimento e qualidade do azevém no sub-bosque de angico-vermelho em sistema silvipastoril

2015 ◽  
Vol 6 (4) ◽  
pp. 437 ◽  
Author(s):  
Janine Pilau ◽  
Elvis Felipe Elli ◽  
Maicon Nardino ◽  
Cleiton Korcelski ◽  
Denise Schmidt ◽  
...  
Keyword(s):  
Experimental Design ◽  
Solar Radiation ◽  
Protein Content ◽  
Leaf Area ◽  
Dry Matter ◽  
Total Protein Content ◽  
Harvest Time ◽  
Silvopastoral System ◽  
Time Of Harvest

The aim of this study was to evaluate the development and quality of ryegrass in an understorey of angico-vermelho in a silvopastoral system. The experimental design was a complete randomized block, with a 2x6 factorial, being two systems of production (full sunlight and silvopastoral) and six times of harvest (15, 30, 45, 60, 75 and 90 days after ryegrass emergence), with three replications. The interception of the photosynthetically active solar radiation, average air temperature, dry matter, leaf area and protein content were evaluated. According to the analysis of variance, the interaction between production system and time of harvest resulted in significant differences for dry matter and the protein content and leaf area resulted in differences only according to the harvest time. The development of ryegrass is influenced by shading, when grown in this study conditions. The shade provided by angico-vermelho reduces the amount of ryegrass dry matter of ryegrass, but this reduction does not limit the use of the specie to compose a silvopastoral system. The total protein content and leaf area of ryegrass are not influenced by the light restriction.

scholarly journals MODIFIKASI MEDIA TANAM UNTUK MENINGKATKAN MUTU BIBIT HANDEULEUM (Graptophyllum pictum L. (Griff.)) DARI BEBERAPA MACAM ASAL STEK

2021 ◽  
Vol 15 (2) ◽  
pp. 1-10
Author(s):  
Tri Rahayu ◽  
Mohamad Ihsan ◽  
Tri Pamujiasih
Keyword(s):  
Leaf Area ◽  
Dry Weight ◽  
Appearance Time ◽  
Significant Difference ◽  
Soil Media ◽  
Number Of Leaves ◽  
Range Test ◽  
Number Of Branches

The research titled "Modification of Planting Media to Improve the Quality of Handeuleum (Graptophyllum Pictum L.) Seedling from Several Kinds of Cuttings Source", was conducted in Sukoharjo, Central of Java. The first treatment was the kind of cuttings source, namely: cuttings from the shoot (S1), cuttings from the second section (S2), and cuttings from the third section (S3). The second treatment factor is the kind of media: sandy soil media (M1), rockwool media (M2), and cocopeat media (M3). The data obtained were analyzed by using the F test at 5% and 1% significantly levels, while the follow-up test was carried out using Duncan's multiple range test at the 5% significantly level. The results obtained indicated that the S treatment (kind of cuttings source) had a significant effect on the variables of the number of branches, number of leaves, and leaf area of ​​each seedling. The highest number of branches and leaves was achieved in the S3 treatment (third section cuttings), followed by S2 (second section cuttings) and S1 (shoot cuttings) treatments. There were a significant difference between the treatments. In leaf area variables, the highest yield was achieved at S1 (shoot cuttings), followed by S2 and S3 which were significantly different between each other. Treatment S showed no significant effect on variables the appearance time of the buds, fresh weight of leaves and dry weight of leaves. The treatment of various media had a significant effect on the leaf area variables of each seedling. Cocopeat media (M3) produced the highest leaf area, followed by M1 (sand media), and M2 (rockwool media) treatments. There was no interaction between treatments of kind of cuttings source and types of media for all observed variables.

scholarly journals Shoot and Cluster Thinning Influence Vegetative Growth, Fruit Yield, and Wine Quality of `Sauvignon blanc' Grapevines

2002 ◽  
Vol 127 (4) ◽  
pp. 628-634 ◽  
Author(s):  
A. Naor ◽  
Y. Gal ◽  
B. Bravdo
Keyword(s):  
Leaf Area ◽  
Weight Ratio ◽  
Fruit Weight ◽  
Cluster Number ◽  
Wine Quality ◽  
Crop Load ◽  
Number Of Clusters ◽  
The Third ◽  
Cluster Thinning

Effects of two shoot densities (14 and 44 shoots/vine) and two crop levels (one and two fruit clusters per shoot) on yield, pruning weight, crop load, and juice and wine quality of field-grown `Sauvignon blanc' grape (Vitis vinifera L.) were studied in a factorial experiment over 3 years. Main shoot length, lateral shoot length and number, shoot diameter, leaf area per shoot, and specific leaf weight were greater at the lower compared with the higher shoot density for all years whereas pruning weight was significantly increased only in the third year. Crop yield increased proportionally with the number of clusters, up to 44 clusters per vine, by both shoot and cluster thinning; a lower rate of yield increase was apparent when the number of clusters per vine was increased further, probably because of increasing source limitation. Berry maturation was delayed in the 44 shoots per vine treatment. Unchanged soluble solids, higher total acidity, and lower pH in the 44-shoot vine treatment in the third year indicated that the effect of cluster number on the must quality was not due to delayed maturation. No effect of cluster number per shoot on vegetative parameters was apparent. Berry size and number were affected by cluster thinning only in the 44 shoot/vine treatment. Both the number of shoots per vine and the number of clusters per shoot affected wine sensory attributes. Herbaceous aroma scores increased with increasing pruning weight. The wine sensory evaluation score decreased with increasing crop load. Total wine sensory scores decreased with decreasing leaf area to fruit weight ratio below ≈18 cm2·g-1, whereas a critical value of the crop to pruning weight ratio, for wine quality, was not apparent. Crop load expressed as crop to pruning weight ratio (kg·kg-1) was highly correlated with fruit weight to leaf area ratio (g·cm-2) (r2 = 0.86), providing a biological rationale for the relevance of crop load and wine quality relations.

scholarly journals Harvest Time Determines Quality and Usability of Biomass from Lowland Hay Meadows

Agriculture ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 198
Author(s):  
Meike Boob ◽  
Martin Elsaesser ◽  
Ulrich Thumm ◽  
Jens Hartung ◽  
Iris Lewandowski
Keyword(s):  
Field Trial ◽  
Meat Production ◽  
Harvest Time ◽  
Phenological Stages ◽  
Biomass Quality ◽  
Hay Meadows ◽  
Significant Difference ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Species-rich hay meadows are usually managed extensively to maintain their biodiversity, with the harvested biomass traditionally being fed to ruminants for milk or meat production. The quality of the biomass is, however, variable, difficult to predict and often does not fulfil today’s requirements. This study established a field trial at two species-rich hay meadows to investigate the combined effect of fertilisation (none, phosphorus and potassium (PK), nitrogen, phosphorus and potassium (NPK)) and date of first cut (at different phenological stages) on biomass quality and quantity. In addition, the most suitable uses of the biomass were explored, including the alternatives biogas and combustion. After four years of the field trial, the stage of maturity at the time of first cut had a greater influence than extensive fertilisation on biomass quality. Dry matter yield (DMY) of the first cut was about 40%–60% of annual DMY (53.99 ± 12.51 dt ha−1 a−1) depending on site, fertilisation and harvest time. Fertilisation had a stronger effect than harvest time on DMY and annual methane yield. In most cases, there was no significant difference in chemical composition between biomass harvested at the end of the grass-flowering stage and at the seed-ripening stage. Thus, a late cut for hay proved to be the most flexible option.

Cathartic Effect of Suicide Attempts Not Limited to Depression

Crisis ◽  
2003 ◽  
Vol 24 (2) ◽  
pp. 73-78 ◽  
Author(s):  
Yves Sarfati ◽  
Blandine Bouchaud ◽  
Marie-Christine Hardy-Baylé
Keyword(s):  
Quality Of Life ◽  
Depressive Symptoms ◽  
Personality Traits ◽  
Rating Scales ◽  
Suicide Attempts ◽  
World Health ◽  
Life Questionnaire ◽  
Short Term

Summary: The cathartic effect of suicide is traditionally defined as the existence of a rapid, significant, and spontaneous decrease in the depressive symptoms of suicide attempters after the act. This study was designed to investigate short-term variations, following a suicide attempt by self-poisoning, of a number of other variables identified as suicidal risk factors: hopelessness, impulsivity, personality traits, and quality of life. Patients hospitalized less than 24 hours after a deliberate (moderate) overdose were presented with the Montgomery-Asberg Depression and Impulsivity Rating Scales, Hopelessness scale, MMPI and World Health Organization's Quality of Life questionnaire (abbreviated versions). They were also asked to complete the same scales and questionnaires 8 days after discharge. The study involved 39 patients, the average interval between initial and follow-up assessment being 13.5 days. All the scores improved significantly, with the exception of quality of life and three out of the eight personality traits. This finding emphasizes the fact that improvement is not limited to depressive symptoms and enables us to identify the relative importance of each studied variable as a risk factor for attempted suicide. The limitations of the study are discussed as well as in particular the nongeneralizability of the sample and setting.

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