Number six would be "the 2d.

most productive Rotation, but the fields receive no rest," as it provided for neither grass nor pasture, while the plowing required would exceed that of any of the other plans by two hundred eighty days.
On a small scale he tried growing cotton, Botany Bay grass, hemp, white nankeen grass and various other products.

He experimented with deep soil plowing by running twice in the same furrow and also cultivated some wheat that had been drilled in rows instead of broadcasted.
In 1793 he built a new sixteen-sided barn on the [ILLUSTRATION: Part of Washington's Plan for His Sixteen-Sided Barn] Dogue Run Farm.

The plan of this barn, drawn by Washington himself, is still preserved and is reproduced herewith.

He calculated that one hundred and forty thousand bricks would be required for it and these were made and burnt upon the estate.