A Study of the Value of Crop Rotation in Relation to Soil Productivity (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from A Study of the Value of Crop Rotation in Relation to Soil Productivity

Six-year rotation, corn, oats, wheat, clover, timothy, and timothy: Plot 13, unfertilized. Plot 3, fertilized with chemical fertilizers. Plots 11, 12, 14, 19 and 20, fertilized with farm manure. Four-year rotation, corn, oats, wheat and clover: 'plot 39, unfertilized. Plots 34, 35, 37 and 38, fertilized with farm manure. Three-year rotation, corn, wheat and clover: Plot 27, unfertilized. Plot 28, fertilized with farm manure. Two-year rotation, wheat and clover. Plot 33, unfertilized. Plots 31 and 32, fertilized with farm manure. Corn in continuous culture. Plot 17, unfertilized. Plot 18, fertilized with farm manure. Oats in continuous culture: Plot 16, unfertilized. Plot 15, fertilized with farm manure. Wheat in continuous culture: Plot 9, unfertilized. Plot 2, fertilized with chemical fertilizer. Plots 5, 10, 21, 24, 30 and 36, fertilized with farm manure. Timothy in continuous culture: Plot 23, unfertilized. Plot 22, fertilized with farm manure.

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