Abstract
Thatcher wheat at the 4- to 6-leaf stage was grown in nutrient solutions and subjected to five osmotic pressure levels of 0.5, 2.5, 5.5, 8.5, and 11 atmospheres with polyethylene glycol "Carbowax 4000". Root temperatures of 45°, 54°, 67°, and 80°F. and nitrogen treatments of 5, 25, 50, and 100 p.p.m. were also applied. Osmotic pressure and nitrogen treatments had only a small effect on dry matter production, whereas increasing root temperatures significantly increased dry matter in the shoots and roots. Treatment effects on nitrogen and phosphorus absorption and translocation are discussed.
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