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Published online 1 March 1970
Published in Agron J 62:192-194 (1970)
© 1970 American Society of Agronomy
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A Study of Certain Nutritional Requirements for Tifgreen Bermudagrass (Cynodon dactylon x C. transvaalensis L.) Utilizing a Hydroponic System1

Wallace G. Menn and George G. McBee2

Tifgreen bermudagrass was grown under greenhouse conditions on a modified hydroponic system and subjected to various levels of N, P, and K. Characteristic deficiency symptoms were induced for each element being studied. Tissue levels of each element were related to aesthetic value ratings, thus indicating the point at which each elemental deficiency might begin to appear. These relationships lend themselves to predicting the occurrence of nutrient deficiency symptoms in Tifgreen bermudagrass based on tissue analysis.

Noticeable N-deficiency symptoms occurred as the tissue level dropped below 22,500 ppm. A P deficiency was observed when the content of this element dropped below 2,000 ppm; however, further investigation is needed concerning the effects of P on Tifgreen nutrition. Growth suppression occurred under high P treatments. Appearance of K deficiency symptoms occurred as the tissue level of this nutrient dropped below 18,000 ppm.

Key Words: Nutrition • Hydroponics • Dificiency symptoms • Predictions

1 Texas Agricultural Experiment Station, College Station, Texas, 77843. Based on a part of the thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. degree in Agronomy, Texas A&M University, College Station.

2 Instructor and Associate Professor. Department of Soil and Crop Sciences, Texas A&M University.

Received for publication July 28, 1969.




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Copyright © 1970 by the American Society of Agronomy.