A study looked at how seeding rates and nitrogen levels affect tillering in wheat and its impact on grain yield. They found that the main stem produced more spikelets, grains, and heavier grains compared to primary tillers. A seeding rate of 60 kg/ha resulted in the highest grain yield, while a nitrogen level of 100 kg/ha led to the most spikelets and grains. The main stem contributed more to grain production than primary tillers, but the total contribution of primary tillers was higher overall.