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Root-zone management of container-grown herbaceous perennials
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Dissertation
Root-zone management of container-grown herbaceous perennials
1999
Overview
Media moisture levels, fertilizer concentrations, and nutrient-solution reactions were evaluated for the effect on plant growth and development during the forcing into flower of 15 different container-grown herbaceous perennial species in a greenhouse. There were no treatment effects on floral initiation and development. In general, both shoot fresh weight and plant height increased with increasing water availability, while percent dry weight was affected minimally. Both low and high fertilizer rates generally decreased shoot fresh weight and only the high fertilizer rate decreased the height. An acidic nutrient solution had less effect on lowering medium pH than an basic nutrient solution had on raising medium pH. Both nutrient solutions had minimal effect on plant growth and appearance. Shoot and leaf tissue macronutrient and micronutrient concentrations were determined for 15 container-grown herbaceous perennial species forced into flower in a greenhouse. Averaged over all species, the six NS produced a range of values for each macronutrient that varied by ≤0.5, 1.0, or ≥1.5% for P and Mg2+, N and Ca2+, or K, respectively. In general, N and P showed minimal differences while K concentrations increased with increasing fertilizer rate. The ranges of Fe, Mn, Zn, B, and Cu concentration over all treatments were 33 to 1515, 40 to 483, 21 to 244, 16 to 205, and 1 to 10 μg·g–1, respectively.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9780599535169, 0599535164
