Total nonstructural carbohydrate (TNC) concentrations in the root system of sand shin oak (Quercus havardii) were analyzed from January, 1972, through December, 1973. Effects of shredding on root reserves were also explored. In both years root TNC varied with the different phenological growth stages. Reserves were gradually depleted throughout the dormant season, November to April, until the low of 6.5 and 7.0% was reached in early May of 1972 and 1973, respectively. TNC then began to accumulate in the roots when the leaves were from 1/3 to 1/2 full size. Shredding significantly reduced root reserves for 6 months. Early leaf expansion is a good indicator of downward carbohydrate translocation and may be the best guideline available for the application of systemic herbicides to effect oak control. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.