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- Title
Effect of Tuber borchii inoculation on Pinus pinea seedling quality and initial growth in the field.
- Authors
Delard, Claudia; Loewe, Verónica; Río, Rodrigo Del; González, Marta; Gregori, Gianluigi; Acevedo, Manuel; Cartes, Eduardo; Balzarini, Mónica
- Abstract
Pinus pinea is an interesting species due to its pine nuts. Tuber borchii, a fungus that produces truffles, is a delicacy. Both species association offers a new productive opportunity. This work evaluated the effect of fertilization and inoculation with T. borchii on stone pine seedling growth in nursery and one year after field establishment in Chile, as well as mycorrhizal persistence. A factorial trial with two factors, inoculation and fertilization, was conducted in nursery. Mycorrhization, seedling growth, biomass and needle nutrient concentration after one growing season were measured. Mycorrhization and plant growth were measured one year after establishment a multi-environment trial involving seven sites. In nursery, inoculated seedlings presented over 50% of mycorrhized root apexes, with no differences between fertilized and non-fertilized plants. Under fertilization, inoculated plants had 16.5% higher height than non-inoculated ones. Fertilization increased seedling growth independently of inoculation. Inoculation did not modify the aerial to root biomass ratio. Inoculated and non-fertilized plants showed statistically higher P and lower K in needles than non-inoculated seedlings. One year after establishment, inoculation favored plant growth, and plants presented on average 88% of root apexes mycorrhized with T. borchii. Fertilization did not affect plant growth or mycorrhization levels. Stone pine inoculation with T. borchii was successful to produce abundantly mycorrhized roots in nursery. One year after field establishment, plant height and crown diameter were enhanced by inoculation, and high mycorrhization level suggests future truffle harvests. Both P. pinea and T. borchii showed high adaptability to different environments. Key message: Stone pine (Pinus pinea) seedlings non-inoculated and inoculated with Tuber borchii were produced in nursery with and without fertilization, and established in seven field trials in central-southern Chile. Before planting, inoculated seedlings presented abundantly mycorrhized root systems, and fertilized plants showed higher height and root collar diameter, independently of inoculation, than non-fertilized ones. One year after plant field establishment, mycorrhization had a positive effect on plant growth, and T. borchii colonization was higher than in nursery. Fertilization did not affect growth or mycorrhization level. The results have practical implications for trufficulture and pine nut production in non-native habitats.
- Subjects
CHILE; SEEDLING quality; VACCINATION; CROWNS (Botany); PLANT inoculation; PINE; TUBERS
- Publication
New Forests, 2024, Vol 55, Issue 4, p609
- ISSN
0169-4286
- Publication type
Article
- DOI
10.1007/s11056-023-09992-8