Nutrient Deficiency Symptoms in Container-grown Douglas-fir and White Spruce Seedlings
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Author Description
Douglas-fir and white spruce were grown in a container nursery at different levels of macro- and micronutrients to produce deficiency symptoms. In 1987, seedlings were grown in 3-13 styroblocks using peat and perlite rooting medium, and each of the macronutrients was applied at 4 levels, including 0. High levels were N=200, P=50, K=100, Mg=50 and S=75 mg L-1 of nutrient solution. Different levels of Ca were obtained by adding CaCO3 to the rooting medium. In 1988, seedlings were grown in perlite contained in Leech cells, and deionized water was used for preparing nutrient solutions and for watering. Four levels of the micronutrients Cu, Zn, Mn, Mo, B, and Fe were tested, with the 4th level about 10 times the usually recommended to look for toxicity symptoms.
Menrva's Summary
THE THESIS
This study investigates the visual symptoms of nutrient deficiencies and toxicities in container-grown Douglas-fir and White Spruce seedlings. The research details the experimental setup, including the use of different rooting media and nutrient solution concentrations, to systematically induce and observe these symptoms. The findings provide a visual guide for identifying and rectifying nutrient imbalances in nursery settings.
THE SCOPE MAP
- Detailed descriptions and visual indicators of macronutrient deficiencies (N, P, K, Ca, Mg, S) at varying levels.
- Observations on micronutrient deficiencies (Cu, Zn, Mn, Mo, B, Fe) and potential toxicity symptoms.
- Experimental methodology involving controlled nutrient application in peat and perlite media.
- Data collected from seedlings grown in styroblocks and Leech cells.
- Information on nutrient solution preparation and application techniques for nursery management.
THE AUTHORITY PERSPECTIVE
This technical report is likely regarded as a valuable reference for forest nursery managers, plant pathologists, and researchers involved in conifer seedling production. Its detailed visual documentation and experimental rigor provide a practical tool for diagnosing and addressing nutrient-related issues that can impact seedling health and growth. The findings contribute to best practices in horticultural science for these commercially important tree species.
Page Count:
29
Publication Date:
1989-01-01
Publisher:
Canada/BC Economic & Regional Development Agreement
ISBN-10:
0772610576
ISBN-13:
9780772610577
Non-Fiction
Science
Forestry
Horticulture
Agriculture
Botany
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