2006
DOI: 10.1051/forest:2006079
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Direct sowing of holm oak acorns: effects of acorn size and soil treatment

Abstract: -A nursery experiment under optimal controlled conditions and a parallel field trial under conditions of severe water stress were conducted to test the influence that acorn size and soil preparation (only in field) exert on the survival and development of this species. The soil preparation consisted of preparing seed beds with a backhoe. The size and weight of the acorn were the factors that most controlled the development of this species in the nursery, while in the field, under conditions of water stress, on… Show more

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Cited by 25 publications
(17 citation statements)
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References 27 publications
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“…Consistent with all three hypotheses, seed size correlated with larger initial seedling size at 7 months of age, a result matching numerous prior studies, including several with oaks (Dunlop and Barnett 1983;Tripathi and Khan 1990;Tecklin and McCreary 1991;Westoby et al 1996;Ke and Werger 1999;Gómez 2004;Navarro et al 2006). More useful for discriminating among the hypotheses was the negative relationship between seed size and initial seedling survival, predicted only by the seedling size effect.…”
Section: Discussionsupporting
confidence: 79%
“…Consistent with all three hypotheses, seed size correlated with larger initial seedling size at 7 months of age, a result matching numerous prior studies, including several with oaks (Dunlop and Barnett 1983;Tripathi and Khan 1990;Tecklin and McCreary 1991;Westoby et al 1996;Ke and Werger 1999;Gómez 2004;Navarro et al 2006). More useful for discriminating among the hypotheses was the negative relationship between seed size and initial seedling survival, predicted only by the seedling size effect.…”
Section: Discussionsupporting
confidence: 79%
“…In the fertilisation/inoculation method experiment, fertilisation increased Q. ilex root collar diameter by 13%. The lower magnitude of the fertilisation effect in the latter experiment could be due to differences in acorn size (Navarro et al 2006), spore germinability (Palazón & Barriuso 2007) or greenhouse climatic conditions from year to year, although it could also be related to the lower number of replicates decreasing the accuracy of estimation.…”
Section: Discussionmentioning
confidence: 96%
“…Mendoza et al (2009) had found that direct seedling survival depended on the specific habitat and was lower (from 30% to 50%) in open sites that are comparable to our study area. However, Navarro et al (2006) found high survival percentages (80%) in directly sown seedlings 2 years after seeding, and proposed the seeding method as a viable choice for forest restoration.…”
Section: Discussionmentioning
confidence: 97%