Hood tm; Mills Ha 1994

• Authors: Hood tm; Mills Ha
• Title: Root-zone temperature affects nutrient uptake and growth of snapdragon.
• Location: Journal of plant nutrition, 17 (2-3). 1994. 279-291.
• Abstract: nutrient uptake by snapdragon (Antirrhinum majus l. 'peoria') was compared at five root-zone temperatures: 8, 15, 22, 29, and 36 degree c. uptake of nitrate (no-3--n), ammonium (nh-4+-n), phosphorus (p), potassium (k), calcium (ca), magnesium (mg), boron (b), iron (fe), manganese (mn), and zinc (zn) responded quadratically to increasing root-zone temperature. greatest nutrient uptake temperature varied with nutrient but ranged from 15 to 29 degree c. uptake of copper (cu) and molybdenum (mo) were unaffected by root-zone temperature. dry weight gain and stem length also responded quadratically to increasing root-zone temperature. optimal temperatures for nutrient uptake and growth were similar, averaging 22 degree c. these results indicate increasing or maintaining root-zone temperatures near 22 degree c maximizes growth and nutrient uptake of snapdragons.