The Effects of Potassium on Ammonium Nutrition of Tomato (Lycopersicon esculentum Mill.)1
- O. Ajayi,
- D. N. Maynard and
- A. V. Barker2
Tomato plants (Lycopersicon esculentum Mill.) grown in pot culture in the greenhouse were easily injured by continuous, prolonged application of (NH4)2SO4. When an equivalent amount of K was supplied with the NH4, plant injury due to excessive NH4 was prevented. The presence of K in the NH4 culture system enhanced growth and restricted total N and NH4-N accumulation. The magnitude of the restriction of N constituents suggests that the ameliorating K effect was due in part to a K:NH4 competition for uptake but principally to the enhancement of NH4 assimilation.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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