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Published in Soil Sci Soc Am J 34:795-797 (1970)
© 1970 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Clod Size in the Seedbed on Development and Yield of Sugarcane1

N. K. Jain2 and J. P. Agrawal3

ABSTRACT

Topsoil was replaced to a depth of 22.8 cm with clod separates, to correspond to Yoder's pulverization moduli, in an experiment conducted with sugarcane (Saccharum officinarum L.) during 1965–1966 and 1966–1967 at the Government Agricultural College, Kanpur, India. Soil bulk density, used as a measure of soil pore space, was lowest at pulverization modulus 2 which represented a clod size of 3.2 to 6.4 mm. Increased pore space at this pulverization modulus resulted in a higher germination percentage, increased the number of shoot roots, enhanced the uptake of nitrogen and, consequently, benefited all measured indices of sugarcane crop response. These included plant height, number of tillers, number of millable canes, and cane yield. To some extent, juice quality of sugarcane was also improved by optimum soil preparation. Deviation from an optimum to a coarser seedbed was less harmful than deviation to a finer seedbed.

NOTES

1 Contribution from the Government Agricultural College, Kanpur, India.

2 Former Prof. of Agronomy, Government Agricultural College, Kanpur: present address-I.E.L. Fertilizer Division, 17/3, Mahatma Gandhi Road, Kanpur-1, India.

3 Former Research scholar: Presently Agronomist, section of Economic Botanist (Rabi Cereals) to Government of U.P., Kanpur-2, India.

Received for publication May 11, 1970. Accepted for publication June 16, 1970.






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