In North America optimal planting density increased by about 18000 plants ha-1 with yield increasing by 35 Mg ha-1 in which planting density contribution to maize yield gain ranges from 85 to 17按照natu

In North America, the optimal planting density has seen a significant increase of approximately 18000 plants per hectare, resulting in a yield increase of 3.5 megagrams per hectare. This increase in planting density has contributed to a range of 8.5% to 17% in maize yield gain. These findings were reported in a study published in the journal Nature Communications.