The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We hypothesized that top growth removal results in long-term increases in antiherbivore defenses of blackbrush acacia (Acacia rigidula), honey mesquite (Prosopis glandulosa), and spiny hackberry (Celtis pallida). In 1998, we determined chemical composition and thorn characteristics of leaves and twigs from plants roller chopped once in 1989, from plants roller chopped in 1989 and 1995, and from untreated...