In agriculture, crop yield (also known as “agricultural output”) refers to both the measure of the yield of a crop per unit area of land cultivation, and the seed generation of the plant itself . The figure, 1:3 is considered by agronomists as the minimum required to sustain human life. One of the three seeds must be set aside for the next planting season, the remaining two either consumed by the grower, or one for human consumption and the other for livestock feed.