Modelling resin production distributions for Pinus pinaster Ait. stands in NW Spain

Gómez-García, Esteban; Chamorro, Enrique Martínez; García-Méijome, Alberto; Lorenzo, M. N.

doi:10.1016/j.indcrop.2021.114316

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…The sample plots used to obtain the study data were established by the Centro de Investigación Forestal de Lourizán (Pontevedra, Galicia) in monospecific Pinus pinaster stands close to the final felling stage [26,27]. The plot in Caldas de Reis (province of Pontevedra), of surface area 2.9 ha, is situated at an elevation of 250 m above mean sea level (m.s.l.)…”

Section: Study Areamentioning

confidence: 99%

“…The yearly resin production in each tree was calculated by summing the production from each groove (after subtracting the weight of the pot or pots when two faces were tapped) [27]. The final weight of resin also included the resin adhered to the face, which was scraped into the pot.…”

Section: Study Areamentioning

confidence: 99%

“…The study findings demonstrate that the variables of location, treatment (combination of number of faces and wound width) and production year affect resin production. The effect of location on resin production can be tested in a representative sample of trees [27] or by using microtapping techniques [55]. The potential resin production can even be evaluated in "microtapping" trials in young stands or plants grown in greenhouses [56].…”

Section: Source Of Between-subjectsmentioning

confidence: 99%

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Resin-Tapping Production in Pinus pinaster Ait. Stands in Galicia (NW Spain): Effects of Location, Number of Faces, Wound Width and Production Year

García-Méijome

Lorenzo

Blanco³

et al. 2023

Forests

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Resin or gum is secreted by conifers, mainly members of the genus Pinus, in response to physical and/or chemical stimulation, which can be induced by tapping live trees, i.e., by making repeated wounds in the trees. Resin production could potentially complement timber production (the main economic activity) in pine stands in Galicia (NW Spain). In addition, the particular characteristics of Galician woodlands (smallholdings, sloping land, presence of shrubs, high density of trees) imply different yields and costs than in pine stands dedicated to resin production in other parts of Spain. Therefore, a specific regional management model that is different from the traditional model established for other resin producing areas in the Iberian Peninsula is required. In this study, resin tapping was applied in each of the three years before the trees were felled, in two different locations, with one or two faces tapped and wounds of two different widths (12 and 16 cm) made across the face(s). Tapping two faces yielded more resin than tapping a single face, thus confirming the study hypothesis. When only one face was tapped, the plot location acquired greater importance, with production being higher in the location characterised by a higher mean annual temperature. Increasing the width of the wound did not always increase the amount of resin obtained per tree, which depended on the number of faces open: when two faces were tapped, increasing the width of the wound increased resin production in both locations in each of the three years of the trial. The weather conditions in each year masked the effect of the tapping season, and production did not follow any particular trend over time. The importance of the local weather conditions in the study areas and the environmental conditions in each year are discussed. The study findings are important for decision-making regarding the treatment and selection of areas for resin extraction.

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Source Of Between-subjectsmentioning

confidence: 99%

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Resin-Tapping Production in Pinus pinaster Ait. Stands in Galicia (NW Spain): Effects of Location, Number of Faces, Wound Width and Production Year

García-Méijome

Lorenzo

Blanco³

et al. 2023

Forests

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“…Para cada uno de los dos métodos de extracción, se aplicaron diferentes pastas estimulantes en el borde interior-superior de las picas horizontales o en el contorno interior de los orificios circulares. Se consideraron tres tratamientos diferentes, un control sin pasta estimulante y dos pastas comerciales que han mostrado resultados prometedores en experimentos anteriores (Michavila et al 2021;Gómez-García et al 2022) 25% ácido sulfúrico (96% v/v), 5% propilenglicol, 19% paja de trigo, 50% agua destilada) (Michavila et al 2021). La producción por árbol se pesó cada vez que se realizaba una nueva pica con una balanza científica calibrada en decigramos.…”

Section: áRea De Estudiounclassified

Producción de resina en España: Análisis de la eficiencia con diferentes pastas y métodos

2023

Proceedings From the International Congress on Project Management and Engineering

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The choice of resin tapping method and stimulant paste in the resin tapping process is crucial. For this reason, other authors carried out studies on the tapping methods with which the best yields are obtained, as well as studied the differences in productions obtained from different types of stimulant pastes. In this study, an appropriate experimental design used on five representative plots of P.pinaster, allowed us to explore the productive differences between two resin tapping methods (traditional and eurogemme) and three stimulant treatements (control, ethephon and ASACIF). The standard yields obtained showed that the traditional method yields 1.43 times more than the eurogemme method. The standard resin production after each groove trend during the season varied between both methods and the stimulant pastes. The tapping method influences the effectiveness of the paste, obtaining greater increases in resin yield after the application of stimulant paste in trees with the eurogemme method. The stimulant paste was the major factor that influence the resin yield, and the response of the tree was not strongly conditioned by dasometric factors, was mainly due to a combination with other factors (bioclimatic, edaphological, genetic. . .

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“…Particularly, the resin tapping sector is progressively recovering in the Iberian Peninsula, where it has been a main activity in the past, mainly on low productivity and harsh environments of the Central Plateau (Rodriguez-Garcia et al 2016). The current resurgence is even prompting the introduction of resin tapping activities on timber-oriented and highly-productive pine forests of the Atlantic areas (Gómez-García et al 2022;Zas et al 2020a). Little experience on resin production is available for this type of pine forests that had no history of resin tapping in Spain.…”

Section: Introductionmentioning

confidence: 99%

Resin tapping of Atlantic pine forests: towards an optimized use of stimulant pastes over the season

Lema,

Touza,

Feijoo

et al. 2024

Eur J Forest Res

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Pine resin is a valuable non-wood forest product with an increasing interest in multiple industrial sectors. Resin-tapping activities also provide valuable ecosystem services in timber-oriented and highly productive pine forest of Atlantic regions, where little previous experience in resin-tapping is available. The objectives of this study were to determine the efficiency of different stimulant pastes and its variation with pine species, site conditions, seasonality and frequency of tapping interventions. We conducted parallel experiments using both conventional and micro-tapping techniques in mature pine stands in NW Spain. We tested four stimulants (control and Zeta, Cunningham and Salicylic pastes) and two groove frequencies (every 2 or 3 weeks). All stimulant pastes significantly increased resin yield compared to the control, being resin stimulation highly consistent across years, sites and species. In conventional resin tapping, resin yield was maximized with the Cunningham and Salicylic pastes while in micro-tapping Salicylic was the most outstanding stimulant treatment. According to the rapid decay of resin flow after wounding, total resin yield decreased with more spaced grooves. However, the reduction was low, and the global efficiency of the tapping operations are likely maximized with grooves applied every three weeks, which would allow increasing the number of tapped trees. Micro-tapping techniques were valuable for screening stimulant pastes and anticipating variation among sites in resin production. Altogether, the Salicylic paste is recommended, especially at the beginning of the resin campaign, when the effect of the pastes was maximized, and if tapping is conducted using closed atmospheres and containers.

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Modelling resin production distributions for Pinus pinaster Ait. stands in NW Spain

Cited by 8 publications

References 20 publications

Resin-Tapping Production in Pinus pinaster Ait. Stands in Galicia (NW Spain): Effects of Location, Number of Faces, Wound Width and Production Year

Resin-Tapping Production in Pinus pinaster Ait. Stands in Galicia (NW Spain): Effects of Location, Number of Faces, Wound Width and Production Year

Producción de resina en España: Análisis de la eficiencia con diferentes pastas y métodos

Resin tapping of Atlantic pine forests: towards an optimized use of stimulant pastes over the season

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