|
|||||
|
|
NUTRIENT DISORDER SYMPTOMOLOGY AND FOLIAR CONCENTRATIONS OF CLERODENDRUM THOMSONIAE |
|
| Authors: | Karen I. Davis Carl E. Niedziela Jr. Muchha R. Reddy Brian E. Whipker Jonathan M. Frantz |
| Affiliation: | 1. Department of Natural Resources and Environmental Design , North Carolina Agricultural and Technical State University , Greensboro, North Carolina, USA;2. Department of Biology , Elon University , Elon, North Carolina, USA;3. Department of Horticultural Science , North Carolina State University , Raleigh, North Carolina, USA;4. USDA-ARS , Application Technology Research Unit (ATRU) , Toledo, Ohio, USA |
| Abstract: | Clerodendrum thomsoniae plants were grown in silica sand culture to induce and photograph nutritional disorder symptoms. Plants were grown with a complete modified Hoagland's all nitrate solution. The nutrient deficiency treatments were induced with a complete nutrient formula minus one of the nutrients. Boron toxicity was also induced by increasing the element ten times higher than the complete nutrient formula. Reagent grade chemicals and deionized water of 18-mega ohms purity were used to formulate treatment solutions. The plants were automatically irrigated and the solution drained from the bottom of the pot and captured for reuse. The nutrient solutions were completely replaced weekly. Plants were monitored daily to document and photograph sequential series of symptoms as they developed. Typical symptomology of nutrient disorders and critical tissue concentrations are presented. Plants were harvested for nutrient analysis when initial symptoms were expressed. Nutrient deficiency symptoms were described and foliar nutrient concentrations provided. |
| Keywords: | bleeding glory-bower tropical bleeding-heart vine glory tree bag flower deficiency fertilizer macronutrient micronutrient symptoms |