The effect of an NH4+‐enhanced nitrogen source on the growth and yield of hydroponically grown maize(Zea maysL.)
Authors:
- 1 January 1991
- journal article
- research article
- Published by Taylor & Francis in Journal of Plant Nutrition
- Vol. 14 (1) , 31-44
Abstract
Increased above‐ground dry matter and grain yields were found for two hydroponically grown maize hybrids (Pioneer‐3925 and Pioneer‐3949) when plants were supplied with an NH4 +‐enhanced nutrient solution (31 percent of total N) compared with a control (4 percent of total N as NH4 +). The major difference in yield developed between silking and 2 weeks post‐silking and silking and 4 weeks post‐silking for the P‐3925 and P‐3949 respectively. The reduced nitrogen content of the stover (leaves plus stalk) was consistently higher on the NH4 +‐enhanced nutrient solution. The decreased production of the control treatment may have resulted from a reduced photsynthetic capacity.Keywords
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