The aim of the guarantee label is to protect chestnuts designated under the "Castaña del Bierzo" designation of origin and the characteristics defined in its regulations.
Adding knowledge to the impact and ecology of the seed bug, Leptoglossus occidentalis, on stone pine
There is still a substantial lack of knowledge about the effective impact and the ecology of the seed bug, Leptoglosus occidentalis, on the Mediterranean stone pine. Thus, the overall objective was to characterize the impact and study the ecology of this invasive insect in stone pine by (1) characterizing its damage on seeds with shell; (2) testing its preference between stone pine and other Mediterranean pines; (3) evaluating damage in Stone pine seed orchards under different management strategies and (4) inferring invasion routes of this insect in the Iberian Peninsula using genetic and field data.
In order to contribute to greater market transparency, APFC - Associação de Produtores Florestais, conducts an impartial sampling and issues since 2015 a press release on pine cone average yields in the Coruche region (Portugal).
For the fifth consecutive year, APFC has used a methodology for sampling the cone quality at 8 sites throughout the municipality of Coruche in order to represent the entire area of pine production.
Each sample has 10 cones harvested randomly from each of 30 trees per site. The cones are weighted before opening, the inshell pine nuts are removed mechanically and shelled manually (sample of 2 kg). The kernels are weighed at a reference humidity (9%) and referred to the cone weight.
The main objective of Biocastanea is the sustainability of chestnut orchards as a natural, cultural, economic and landscape element, through the transfer of technical and scientific knowledge to the productive sector. Furthermore, it aims to make chestnut growing one of the main pillars of sustainable development. To generate debate, analysis and exchange of new proposals for the development of the sector. To maintain the relationship between culture-biodiversity and economy present in the chestnut tree.
European chestnut has a great economic impact in the rural economy of mountainous regions of southwest Europe. The main threats for this important crop are pests and diseases, being the most important root rot, blight disease and gall wasp. Root rot, caused by Phytophthora cinamomi (Pc), is the most severe disease which impact negatively the production of chestnut orchards, which are important for its edible nuts.
The main objective is to release a new product to the market: new genotypes with improved resistance to Pc, selected from the breeding program on course, to be used as rootstocks, with compatibility with nut varieties.
The objective of the project was to implement in France a classical biological program against the chestnut gall wasp, Dryocosmus kuriphilus (Dk), using releases of the exotic parasitoid Torymus sinensis. The expected outcome of this project were (i) the permanent establishment of the parasitoid and (ii) an efficient and long-term control of the pest.
Some experiments conducted at the Institute of Agri-Food Research and Technology of Catalonia (IRTA), aimed at evaluating the productive capacity of Stone pine clones from different Spanish provenance regions (PR) under Leptoglossus occidentalis Heideman attack, are presented. This pest is severely affecting Stone pine stands in the Iberian Peninsula, hence, identifying genotypes less susceptible to L. occidentalis attack is an important line of research in this area.
Design and implementation of a new productive model around the chestnut tree as a rural development model in El Bierzo (Castile and Leon)
The main objective was the structuring of the sectorial productive system in one of the main chestnut growing regions in Spain, El Bierzo (Castilla y León). As secondary objectives: Improvement of the phytosanitary status of the chestnut groves. Quantitative and qualitative increase of the production, productivity and profitability. Creation of employment. Normalization of the productive activity. Creation of wealth and equitable distribution. Corporate social responsibility.
Eurocastanea is the consultation and representation body for professionals in the chestnut sector in the countries of the European Union, and in the European and world economy.
In addition, it
- Organizes dialogue, consultation, study and joint action among its members, representing the chestnut sector to European or other institutions.
- Contributes to the regeneration and promotion of the sector, organising the European "Eurocastanea" days and cooperation missions in the technical, scientific or economic area.
Evaluation of susceptibility to Dryocosmus kuriphilus (Hymenoptera: Cynipidae) in Castanea sativa and in hybrid cultivars
The aim is to determine different levels of sensitivity of different cultivars to the chestnut gall wasp. Among the cultivars that have been evaluated are interspecific hybrids and traditional European cultivars.
Hot water treatment: an effective method for disinfecting chestnut scions against chestnut gall wasp
The hot water treatment (HWT) was evaluated for pest and disease control, and specifically its use to prevent the spread of the chestnut gallwasp Dryocosmus kuriphilus Yasumatsu in chestnut plants in nurseries.
The carob tree cultivation is handicapped by the poor quality of the seedlings leaving the nursery due to the deterioration of the root system, and poor root quality is indeed a factor of failure when placing plants in the field. The objective of this work is to study the effect of root excision to address the problem of the pivotal nature of the root system and mycorrhization to improve the physiological quality of plants at the nursery stage and increase their chance of success in planting.
Longal Chestnut - the potential of a traditional regional variety from Portugal's Terra Fria Transmontana
Chestnuts are an extremely important product for the Portuguese region 'Terra Fria Transmontana', representing one of the most profitable crops today. Its commercialization is still done based solely on caliber, an essential characteristic to satisfy a consumer little informed about the diversity of existing varieties. Longal is a traditional regional variety from PDO Castanha da Terra Fria, with excellent characteristics for fresh consumption and the processing industry. It is important to work on its promotion with consumers and producers.
Chestnut ink disease, caused by root pathogens (Phytophthora sp. ), induces dieback and mortality in sweet chestnut, C. sativa. Classical biological control can be efficient using ink resistance rootstocks that block the entrance of the fungus.
In this context, selected ink-resistant chestnut clones need to be propagated massively. Here, a method is presented for multplication and rooting clones under photoautotrophic conditions.
Aleppo pine (Pinus halepensis Mill.) is one of the most drought-tolerant pine species and it is distributed over large drought-prone Mediterranean regions. The determination of the water balance of the soil-crop-climate and its fluctuation is difficult to achieve, due to the spatial variation in site conditions (Schiller and Cohen, 1998). The objectives of this study are to (1) estimate crop water requirements (ETc) and actual evapotranspiration (ETa) of Tunisian Aleppo pine and (2) study the impact of climate change on water balance, using the WEAP-MABIA Module (Yates et al.,2005a; 2005b; Jabloun and Sahli, 2012) based on the FAO Irrigation and Drainage publication 56 (Allen et al., 1998).
The objectives of this participative research program are:
1: Select surviving European chestnut trees within strong impacted areas by the ink disease
2: Evaluate their resistance against Phytophthora in laboratory, and verify their belonging to sweet chestnut, the species Castanea sativa.
3: Use the individuals showing the best resistance capacities against ink disease (“elite trees”) as seeds producers in seed orchards.
The expected results are:
- Reconquest and renewal of the actually declining chestnut orchards
- Decrease of production cost due to nuersery seedling production.
- Higher genetic diversity in the chestnut plantations.
The aim of this work was to valorize Arbutus unedo by its regeneration in vivo and in vitro, also by characterizing of their antioxidant and antimicrobial properties of leaves and fruits in order to evaluate and improve the potential value of this plant.
The objective of the project was to create a Corsican beer that could be recognised by fine beer lovers, a high-end product that is also thirst-quenching in order to adapt to the Mediterranean climate. This beer had to be with character and to be brewed with a mixture of malt and Corsican chestnut flour, insular raw material. To do this, a brewery had to be built in Corsica and had to reach 10,000 hectolitres of production capacity.
The objective was to evaluate the loss of moisture in pine cone during the storage after harvest, comparing the storage inside a warehouse or just under a shed. This information is intended to support the producer in deciding when to sell, at the beginning, during or at the end of the commercialization campaign, taking into account not only the market price / kg but also the weight loss of the pine cone due to the loss of moisture.
The objective is to analyze the possibility of modeling the kernel weight from biometric and morphological parameters of the pine nuts from Pinus pinea, measured through X – ray and image analysis. The overall objective is to support the definition of a pine cone quality assessment methodology at the stand/ farm level in order to provide the landowners with tools for pine cone commercialization and increase by this mean the market transparency.
This factsheet aims to highlight the interannual variation of the pine cone dimensions and present some factors that explain it, in order to contribute for the future establishment of silvicultural measures than can lead to a decrease in that variation, by promoting the conditions for bigger pine cones or selecting more suitable Forest Reproduction Materials (FRM) .
The objective of this economic experience is to bring value to all the local chestnuts production in order to keep the maximum added value of the products at the producer/processor level, preserving local transformation know-how in order to ensure high quality products.
To do it, the idea of this experience is that producers pool the transformation process and join together in order to enter more important markets.
The main objective is to know the potential distribution of chestnut (Castanea sativa) in Castile and Leon through the use of spatial modelling tools based on 13 different variables. The aim has been to determine where the bioclimatic and geographical conditions are most suitable for the species to prosper. These models allow to evaluate in a quantitative way the possibility that a chestnut population occupies a specific area.
Climate change is affecting the health and productivity of the Mediterranean stone pine (Pinus pinea) stands in the Spanish Northern Plateau. The main research lines for adapting this forest ecosystrems and mitigating the effect of climate change are presented. The finding should lead to recommendations for the future management of these stands.
The high prices paid for genuine Mediterranean pine nuts kernels as gourmet nuts are due to an sustained demand on the world market, not met by the production harvested from the wild. The use of grafted Mediterranean stone pine trees allows landowners to establish profitable new plantations with precocious cone yields. For this purpose, genotypes have been selected in Spain and Portugal. Here we present 15 clones registered in Spain with estimated gains of around +10-30% in mean cone yield.
A method is resented to reduce the severity of cankers caused by chestnut blight, Cryphonectria parasitica. This pathogenic fungus penetrates and necroses cortical tissues, which provoke mortality of adult trees aerial parts and failure of grafting.
In the 1970s, French researchers developed a biological control method using hypovirulent strains of the fungus. Since then, a research programme at INRA conducted with several organisations (Chambers of Agriculture, Union of Chestnut production Associations, the Forest Health Department) aims at clarifying and improving thecontrol methods.
There are several requirements and experiences for a successfull graft, that are reviewed in the following from a practical point of view.
In coastal regions like the Portuguese Alentejo or Catalonian Empordà, grafting is usually performed directly in the field on young plantations, by specialised teams of skilled forest workers. In-nursery grafting on container-raised rootstocks is an alternative, not discussed here, for harsher climate conditions where in situ grafting has a low success rate due to unpredictable spring weather (rain, wind, or late frost in some years, early heat waves in others).
Several handbooks and guides are available online for further consultation.
In addition to their traditional local use in human and animal food, the fruits of the carob tree have a high commercial value in industrial transformation. The demand for fruits and seeds is growing significantly and their commercial value is increasing. It is also an undemanding species, since it is found in various bioclimatic levels (humid, subhumid, semi-arid and arid) and on poor and skeletal soils. The objective of this work is to explore a panel of varieties to be characterized by describing the tree, fruits, and seeds in an illustrated form.
The chestnut gall wasp in the Portuguese region of Terra Fria Transmontana: Three years of biological control
The Dryocosmus kuriphilus insect, chestnut gall wasp, introduced in Portugal in 2014, represents a serious threat to the national production of chestnuts. Over the years, various pest outbreaks have been identified, which is currently present in much of the Terra Fria Transmontana region, with levels of severe infestation levels. The official reports state, “We are currently witnessing a large and rapid dispersion of the insect and the alarm of the populations, given the damage it is already causing, so, an intensification of the parasitoid releases for these regions should be considered from 2020”.
The main objective of the Mesa del Castaño del Bierzo (Regional Chestnut Round Table) is to improve the economic performance of chestnut cultivation and the endurance of the chestnut tree as a characteristic natural, social and landscape element of the Bierzo region. The Round Table is also the coordination and representation body of the chestnut sector in the region.
The Val di Non and Val di Sole Apples and Flavours route: a successful territorial marketing strategy
Diversify the tourism offer in Trentino Alto-Adige (Italy), a famous destination that attracts thousands of tourists for its mountain trails and hundreds of miles of ski slopes. A diversification of local tourism offer, involving local stakeholders and supported by a specific territorial marketing strategy, can bring benefits to small farmers, restaurants and many other local actors, especially in the marginal area of the region. One of the main goals of the "route" is to assure a constant flux of tourists all year long, offering interesting activities and events in all seasons.
The mobile app Vigil’Encre enables citizens to detect the chestnut ink disease (CID) - the most damaging disease for chestnut trees. Vigil’Encre applies a new approach to advance ecology, education and conservation, as it allows the public to participate in the tree health preservation.
Its broad functionality lets citizen scientists to diagnose the disease, characterize pathogens, describe their biology and in this way to actively take part in the sustainable crop protection.