Production of cultivars and native populations of Trifolium subterraneum L. in the south of France (Corsica)

Volaire, Florence; Leliere, F; Prospéri, JM

doi:10.1071/ea9920619

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…This could be due to the frequency of cutting (3-4 cuts during the growing season) which is the normal rate for the 2 cuts' types. In these regions ' (Marie, 1961 (Charmet et al, 1989 ;Volaire et al, 1992 (Charmet et al, 1989 ;Volaire et al, 1992). Ici, c'est une …”

mentioning

confidence: 99%

Évaluation agronomique de variétés de pays de sainfoin (Onobrychis sativa L) originaires du sud-est de la France

Prospéri

Demarquet²,

Angevain

et al. 1994

Agronomie

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production under open-field pollination. An analysis of variance of these traits revealed the superiority of cultivar Fakir for vegetative and seed production. The local varieties showed a better winter growth, a quick start in the spring and a earlier flowering time while keeping a good level of frost tolerance. This is a very interesting trait for the farming systems in these regions, because it allows grazing during the winter which is complementary to the alfalfa cultivars used. Sainfoin shows a large variability for aftermath flowering. The differences between the 2 types of growth, '1 cut' and '2 cuts', are highly significant. The '1 cut' local varieties are less productive and show a low persistency. This is the contrary of what is generally observed by farmers. This could be due to the frequency of cutting (3-4 cuts during the growing season) which is the normal rate for the 2 cuts' types. In these regions '1 cut' local vari-* Correspondance et tirés à part eties are usually grazed in spring and autumn, with a rest period during the summer. Principal component analysis was carried out to identify clusters of homogeneous behaviour. Firstly, there is a definite separation between the '1 cut' and '2 cuts' types and between the cultivars and local varieties. This confirms the originality of these local varieties. A hierarchical clustering method on the first 4 components was used to separate the different groups. A partition into 6 clusters was chosen. Each cluster was described by means of the different traits and compared with the other clusters. The genetic resources of sainfoin are very difficult to preserve, because this species is allogamous, self-incompatible, requires insect pollination, and its seeds have a low viability (5-8 years), even in a cold chamber. These clusters were used to build some 'genetic pools' to preserve the local varieties collected.

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confidence: 99%

Évaluation agronomique de variétés de pays de sainfoin (Onobrychis sativa L) originaires du sud-est de la France

Prospéri

Demarquet²,

Angevain

et al. 1994

Agronomie

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“…On the other hand, these species usually show a high reseeding capacity and « perenniality ». It is noteworthy that soil cover by the cover crops did not decline after three years in the PM treatment, showing a higher « perenniality » than other species or species mixtures used as cover crops under Mediterranean conditions (Porqueddu et al, 1996;Volaire et al, 1992). In this sense, the reduction of vineyard mechanization, i.e., no ploughing, could be an interesting benefit from both an economical and ecological point of view, since the use of permanent mixtures as cover crops implies reduced costs, energy use and CO 2 emissions.…”

Section: Cover Crop Growthmentioning

confidence: 99%

Cover cropping in Vitis vinifera L. cv. Manto Negro vineyards under Mediterranean conditions: effects on plant vigour, yield and grape quality

et al. 2011

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Aims: In temperate climates, cover crops are mainly used to reduce excess soil water and nutrient availability to grapevines, which otherwise could decrease grape quality. In Mediterranean climates, where water is a limiting factor, the use of cover crops is not as straightforward. However, in this scenario, summer senescent and self-seeding herbaceous cover crops could also help to decrease soil erosion as well as to reduce excessive early vegetative vigour, which could restrict grape water availability at later phenological stages. The aim of this experiment was to study the effects of particular cover crops in Mediterranean vineyards on grapevine vegetative growth, gas exchange, yield and grape quality.Methods and results: The experiment was carried out over three consecutive years in an organic vineyard (cv. Manto Negro) in central Majorca, Spain. Three treatments (three cover cropping rows per treatment) were established: perennial grass and legume mixture (PM), no tillage, i.e., with permanent resident vegetation (NT), and traditional tillage or ploughed soil (TT). The grapevines were rain fed until veraison, and then drip irrigation was applied (30% potential evapotranspiration; ETP) until harvest. Plant water status was established according to a defined value of maximum daily leaf stomatal conductance (gs). Cover crops reduced total leaf area (LA), gs and grapevine vigour at early growth stages. gs and net photosynthesis (AN) were higher in cover crop treatments during the veraison and ripening stages, likely because of the reductions in LA. Intrinsic water use efficiency increased from flowering to veraison-maturity in all treatments. Yield was lower in the cover crop treatments (PM and NT) compared to TT for all years, but these differences were only significant in 2007. However, grape quality parameters slightly improved in the PM treatment.Conclusion: The use of cover crops decreased LA, helping to avoid dramatic reductions of stomatal conductance in mid-summer, but decreased yield and only slightly increased grape quality.Significance and impact of the study: This study showed that the use of specific cover crops in vineyards under Mediterranean climates helps to reduce vegetative vigour. Nevertheless, yield reduction and slight quality improvement suggest that cover crops should be adjusted in order to reduce competition for water and thus prevent these negative effects of water scarcity.

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“…L' etude des populations de trefle souterrain n' a pas ete abordee en France continentale. Les travaux concernent essentiellement Ia Corse (Gensollen, 1988 ;Volaire et a/., 1992). Les pays mediterraneens voisins ont etudie recemment certaines de leurs populations de trefle souterrain.…”

Section: Introduction Et Objectifsunclassified

Caractéristiques des populations françaises de trèfle souterrain (Trifolium subterraneumL.)

Masson¹,

Collins²,

Gladstones³

et al. 1996

Acta Botanica Gallica

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Production of cultivars and native populations of Trifolium subterraneum L. in the south of France (Corsica)

Cited by 4 publications

References 10 publications

Évaluation agronomique de variétés de pays de sainfoin (Onobrychis sativa L) originaires du sud-est de la France

Évaluation agronomique de variétés de pays de sainfoin (Onobrychis sativa L) originaires du sud-est de la France

Cover cropping in <em>Vitis vinifera</em> L. cv. Manto Negro vineyards under Mediterranean conditions: effects on plant vigour, yield and grape quality

Caractéristiques des populations françaises de trèfle souterrain (Trifolium subterraneumL.)

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