Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/7/1996
Publication Date: N/A
Technical Abstract: Guayule produces a high quality latex. Twelve two-year-old plants from two improved guayule lines, O16-1 and G7-11, were harvested and plant material separated into five stem diameter classes. In the smallest two size classes (2.0-10.0 mm), percent latex was highly correlated (0.93) with percent latex in the whole plant, and fresh weight, dry weight and latex yield were highly and positively correlated with latex yield for the whole plant. This suggests that these size classes could be harvested to estimate latex content and yield for the entire plant. Using these size classes, three lines, G7-11, O16-1, and Cal-6, have been sampled every two weeks since 4 Dec 1995 for latex concentration. Latex content went from about 2% in Dec 1995 to a high of about 10% in Mar 1996, and has been dropping steadily through the summer months.