ABS is sampling from address frames that are usually based, in part, on the USPS files. Although approaches for selecting samples of addresses for mail or in-person surveys have existed for decades, the surveyâs success depends heavily on the availability of a suitable address frame.
Water and water uptake are major factors in keeping cut flowers fresh. A process called hardening ensures maximum water uptake. It simply means placing the freshly cut stem in 110Â° F (43.5Â° C) water (plus preservative). Place in a cool location for an hour or two.
Because they are sensitive to drying, recalcitrant seeds must be stored at 92 to 98% RH. The best storage temperature depends on the chilling sensitivity of the species. Seeds from many tropical fruits (mango, avocado, cocoa, jackfruit) are sensitive to ch illing and should be stored at â¥15 Â°C (59 Â°F).These seeds have the shortest potential shelf-life, remaining viable for 2 weeks to 3 mo.ecalcitrant seeds. Intermediate seeds are produced by perennials of tropical and subtropical origin (such as coffee, citrus, macadamia, and papaya) and by some tree nut species (for example, walnut, hickory, pecan, hazelnut, and pistachio).