Drawbar pull weight is just half of the equation. Work done is pull per unit of time. Said differently, the same drawbar pull at twice the speed is twice the work - which is really the ultimate objective. Rubber tires were very important in increasing the operating speed of tractors under drawbar loads (typically tillage).
Corn row spacing was based on using horses to cultivate corn. Shrinking the row spacing when horses were not used changes the equation.
It will be hard to separate each factor in powered agriculture in the past 100 years.
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Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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