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Published in Soil Sci Soc Am J 43:1216-1221 (1979)
© 1979 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Influence of Twin-Row Spacing and Nitrogen Rates on High-Frequency Trickle-Irrigated Sweet Corn1

C. J. Phene and O. W. Beale2

ABSTRACT

Sweet corn (Zea mays L.) is generally grown in rows spaced about 100 cm apart. Trickle irrigating this type of row configuration is inefficient and costly because one irrigation tube must be installed on each row. The objectives of this research were to determine the influence of trickle irrigation; wide bed, "twin-row" spacing; and trickle N and K fertilization rates on the yield and quality of sweet corn. The twin rows, 35 cm apart, were positioned on wide beds, spaced 165 cm from center to center. A single trickle irrigation tube was placed between the twin rows of corn, providing water and nutrients simultaneously to both rows. Sweet corn was fertilized daily with seasonal applications of 28, 56, 168, and 336 kg/ha of N and K. Plant height, ear yield, and biomass production increased with N and K rates ranging from 0 to 168 kg/ha, but were not affected by the twin-row bed spacing nor by fertilizing with 336 kg/ha each of N and K.

NOTES

1 Contribution from the Coastal Plains Soil and Water Conservation Research Center, USDA-SEA-AR, in cooperation with Clemson Agric. Exp. Stn.

2 Soil Scientists, formerly USDA-SEA-AR, P. O. Box 3039, Florence, SC 29502; now, respectively, Supervisory Soil Scientist, Water Management Research Laboratory, USDA-SEA, 4816 East Shields Ave., Fresno, CA 93726, and Cooperator.

Received for publication May 1, 1979. Accepted for publication July 20, 1979.






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Copyright © 1979 by the Soil Science Society of America.