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.
The growth of weeds from the soil seedbank and sown Echinochloa colona and E. crus-pavonis was studied in relation to different water depths (0, 2 4 and 8cm) and flood durations (2, 4 and 7 days in 7). Deeper flooding increased plant numbers in Ammannia prieriana, Sphenoclea zeylanica and Heteranthera callifolia, but decreased plant numbers in E. colona and E. crus-pavonis and had no effect on Fimbristylis...
Section 5 of the Toxic Substances Control Act (TSCA) does not require any toxicity testing as a prerequisite for submission of a Premanufacturing Notice (PMN) for a new chemical. In order to compensate for the lack of actual test data, a process involving structure-activity relationships (SAR) for assessing hazard potential was constructed. The hazard assessment is then coupled with an estimation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.