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}.
Nitrogen. Alfalfa is a legume that can fix its own nitrogen (N) with the help of Rhizobium meliloti, a bacteria that lives in association with alfalfa roots. The bacteria converts nitrogen gas (N 2) in the air into a form that plants can use. A 5 ton/ac alfalfa crop will fix up to 250 lb/ac of nitrogen per year.Since the soils in southern Alberta are low in N-fixing bacteria, alfalfa seed must be inoculated with the R. meliloti. Alfalfa seed is often pre-inoculated before sale.pplying nitrogen fertilizer on healthy alfalfa stands is not recommended. Phosphorus. If phosphate was not applied before seeding or is limiting production, a grower may consider an annual maintenance application of 50 lb/ac of P 2 O 5 to meet crop removal rates.