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Identification of Nutritional Influences on Cone Production in Fraser Fir
Author(s) -
Arnold Roger J.,
Jett J. B.,
Allen H. L.
Publication year - 1992
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1992.03615995005600020039x
Subject(s) - cone (formal languages) , nutrient , yield (engineering) , tree (set theory) , identification (biology) , scarcity , mathematics , selection (genetic algorithm) , horticulture , biology , botany , ecology , computer science , combinatorics , physics , artificial intelligence , algorithm , economics , microeconomics , thermodynamics
Fraser fir [ Abies fraseri (Pursh) Poir.] is highly valued as a freshcut Christmas tree. Commercial cultivation is limited partly by seed scarcity. The purpose of this study was to develop foliar tissue nutrient norms for female cone yield to use in the Diagnosis and Recommendation Integrated System (DRIS), for ultimately improving cone yields. Two sets of these norms were developed, one set based on February and the other on July foliar nutrient levels. Neither single mineralnutrient concentrations nor other assessed tree parameters correlated with cone yield. However, nutritional discrimination between high‐and low‐yielding trees was obtained with July tissue. Discrimination with February needle samples was poor. Reasonable agreement was obtained for orders of nutrient limitations diagnosed from the two seasonally specific sets of norms. Results indicated the potential to use DRIS to aid in selection of clones and prescribing treatments to enhance cone yields.