Alfalfa vs. Hairy Vetch
Do you think Alfalfa is superior to hairy vetch in bringing up nutrients from deep in the soil?
Alfalfa is reported to grow roots 15 feet deep into the soil...where hairy vetch grows roots 20 cm's deep into soil.
I was doing some asking around and the people that use it in their garden told me they burry the hairy vetch in for maximum nitrogen fertilization effect.
Is it enough for nitrogen to be fixed into the soil if you let the hairy vetch grow till it flower's?
people say it has to be tilled into the soil. What if I remove it after it flowers and feed it to my goats will I loose the nitrogen fixing into soil benefit?