The results are interesting and you don't need to use liquid nitrogen to check what happens. You can just put a banana in a home freezer and leave it there for at least 24 hours to be sure that it is completely frozen. Take it out and check what happens as it warms up.
In some parts of the country, spring is the best time to plant alfalfa. In others, it can be done successfully in late summer and early fall. It needs six to eight weeks of growing time before the first frost so it comes back with gusto in the spring. {C}.
To achieve seed stands of these densities, growers have been sowing 0.5 to 1.0 lb/acre (0.5 to 1.0 kg/ha). Considering alfalfa contains about 220,000 seeds per pound (485,000 seeds per kilogram) even these low seeding rates can be too high. However, even under the best managed conditions there is considerable seedling mortality before the stand produces its first crop.